Author: "Connot, C." - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Connot, C."' showing total 83 results

Start Over Author "Connot, C."

83 results on '"Connot, C."'

1. VLTI-MATISSE L- and N-band aperture-synthesis imaging of the unclassified B[e] star FS Canis Majoris

Author: Hofmann, K. -H., Bensberg, A., Schertl, D., Weigelt, G., Wolf, S., Meilland, A., Millour, F., Waters, L. B. F. M., Kraus, S., Ohnaka, K., Lopez, B., Petrov, R. G., Lagarde, S., Berio, Ph., Allouche, F., Robbe-Dubois, S., Jaffe, W., Henning, Th., Paladini, C., Schöller, M., Mérand, A., Glindemann, A., Beckmann, U., Heininger, M., Bettonvil, F., Zins, G., Woillez, J., Bristow, P., Stee, P., Vakili, F., van Boekel, R., Hogerheijde, M. R., Dominik, C., Augereau, J. -C., Matter, A., Hron, J., Pantin, E., Rivinius, Th., de Wit, W. -J., Varga, J., Klarmann, L., Meisenheimer, K., Rosas, V. Gámez, Burtscher, L., Leftley, J., Isbell, J. W., Yoffe, G., Kokoulina, E., Danchi, W. C., Cruzalèbes, P., de Souza, A. Domiciano, Drevon, J., Hocdé, V., Kreplin, A., Labadie, L., Connot, C., Nußbaum, E., Lehmitz, M., Antonelli, P., Graser, U., and Leinert, C.
Subjects: Astrophysics - Solar and Stellar Astrophysics
Abstract: Context: FS Canis Majoris (FS CMa, HD 45677) is an unclassified B[e] star surrounded by an inclined dust disk. The evolutionary stage of FS CMa is still debated. Perpendicular to the circumstellar disk, a bipolar outflow was detected. Infrared aperture-synthesis imaging provides us with a unique opportunity to study the disk structure. Aims: Our aim is to study the intensity distribution of the disk of FS CMa in the mid-infrared L and N bands. Methods: We performed aperture-synthesis imaging of FS CMa with the MATISSE instrument (Multi AperTure mid-Infrared SpectroScopic Experiment) in the low spectral resolution mode to obtain images in the L and N bands. We computed radiative transfer models that reproduce the L- and N-band intensity distributions of the resolved disks. Results: We present L- and N-band aperture-synthesis images of FS CMa reconstructed in the wavelength bands of 3.4-3.8 and 8.6-9.0 micrometer. In the L-band image, the inner rim region of an inclined circumstellar disk and the central object can be seen with a spatial resolution of 2.7 milliarcsec (mas). An inner disk cavity with an angular diameter of 6x12mas is resolved. The L-band disk consists of a bright northwestern (NW) disk region and a much fainter southeastern (SE) region. The images suggest that we are looking at the bright inner wall of the NW disk rim, which is on the far side of the disk. In the N band, only the bright NW disk region is seen. In addition to deriving the inclination and the inner disk radius, fitting the reconstructed brightness distributions via radiative transfer modeling allows one to constrain the innermost disk structure, in particular the shape of the inner disk rim., Comment: accepted for publication in A&A
Published: 2021
Full Text: View/download PDF

2. MATISSE, the VLTI mid-infrared imaging spectro-interferometer

Author: Lopez, B., Lagarde, S., Petrov, R. G., Jaffe, W., Antonelli, P., Allouche, F., Berio, P., Matter, A., Meilland, A., Millour, F., Robbe-Dubois, S., Henning, Th., Weigelt, G., Glindemann, A., Agocs, T., Bailet, Ch., Beckmann, U., Bettonvil, F., van Boekel, R., Bourget, P., Bresson, Y., Bristow, P., Cruzalèbes, P., Eldswijk, E., Caujolle, Y. Fanteï, Herrera, J. C. González, Graser, U., Guajardo, P., Heininger, M., Hofmann, K. -H., Kroes, G., Laun, W., Lehmitz, M., Leinert, C., Meisenheimer, K., Morel, S., Neumann, U., Paladini, C., Percheron, I., Riquelme, M., Schoeller, M., Stee, Ph., Venema, L., Woillez, J., Zins, G., Ábrahám, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Alonso, J., Augereau, J. -C., Böhm, A., Bazin, G., Beltran, J., Bensberg, A., Boland, W., Brast, R., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J. -M., Connot, C., Conzelmann, R. D., Danchi, W. -C., Delbo, M., Drevon, J., Dominik, C., van Duin, A., Ebert, M., Eisenhauer, F., Flament, S., Frahm, R., Rosas, V. Gámez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Glazenborg, A., Gonté, F. Y. J., Guitton, F., de Haan, M., Hanenburg, H., Haubois, X., Hocdé, V., Hogerheijde, M., ter Horst, R., Hron, J., Hummel, C. A., Hubin, N., Huerta, R., Idserda, J., Isbell, J. W., Ives, D., Jakob, G., Jaskó, A., Jochum, L., Klarmann, L., Klein, R., Kragt, J., Kuindersma, S., Kokoulina, E., Labadie, L., Lacour, S., Leftley, J., Poole, R. Le, Lizon, J. -L., Lopez, M., Mérand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Menut, J. L., Mohr, L., Mosoni, L., Navarro, R., Nussbaum, E., Pallanca, L., Pantin, E., Pasquini, L., Duc, T. Phan, Pott, J. -U., Pozna, E., Richichi, A., Ridinger, A., Rigal, F., Rivinius, Th., Roelfsema, R., Rohloff, R. -R., Rousseau, S., Salabert, D., Schertl, D., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., Toledo, P., Tristram, K., Tromp, N., Vakili, F., Varga, J., Vinther, J., Waters, L. B. F. M., Wittkowski, M., Wolf, S., Wrhel, F., and Yoffe, G.
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: Context:Optical interferometry is at a key development stage. ESO's VLTI has established a stable, robust infrastructure for long-baseline interferometry for general astronomical observers. The present second-generation instruments offer a wide wavelength coverage and improved performance. Their sensitivity and measurement accuracy lead to data and images of high reliability. Aims:We have developed MATISSE, the Multi AperTure mid-Infrared SpectroScopic Experiment, to access high resolution imaging in a wide spectral domain and explore topics such: stellar activity and mass loss; planet formation and evolution in the gas and dust disks around young stars; accretion processes around super massive black holes in AGN. Methods:The instrument is a spectro-interferometric imager covering three atmospheric bands (L,M,N) from 2.8 to 13.0 mu, combining four optical beams from the VLTI's telscopes. Its concept, related observing procedure, data reduction and calibration approach are the product of 30 years of instrumental research. The instrument utilizes a multi-axial beam combination that delivers spectrally dispersed fringes. The signal provides the following quantities at several spectral resolutions: photometric flux, coherent fluxes, visibilities, closure phases, wavelength differential visibilities and phases, and aperture-synthesis imaging. Results:We provide an overview of the physical principle of the instrument and its functionalities, the characteristics of the delivered signal, a description of the observing modes and of their performance limits. An ensemble of data and reconstructed images are illustrating the first acquired key observations. Conclusion:The instrument has been in operation at Cerro Paranal, ESO, Chile since 2018, and has been open for science use by the international community since April 2019. The first scientific results are being published now., Comment: 24 pages, 26 figures, submitted to Astronomy & Astrophysics
Published: 2021
Full Text: View/download PDF

3. Mid-infrared circumstellar emission of the long-period Cepheid l Carinae resolved with VLTI/MATISSE

Author: Hocdé, V., Nardetto, N., Matter, A., Lagadec, E., Mérand, A., Cruzalèbes, P., Meilland, A., Millour, F., Lopez, B., Berio, P., Weigelt, G., Petrov, R., Isbell, J. W., Jaffe, W., Kervella, P., Glindemann, A., Schöller, M., Allouche, F., Gallenne, A., de Souza, A. Domiciano, Niccolini, G., Kokoulina, E., Varga, J., Lagarde, S., Augereau, J. -C., van Boekel, R., Bristow, P., Henning, Th., Hofmann, K. -H., Zins, G., Danchi, W. -C., Delbo, M., Dominik, C., Rosas, V. Gámez, Klarmann, L., Hron, J., Hogerheijde, M. R., Meisenheimer, K., Pantin, E., Paladini, C., Robbe-Dubois, S., Schertl, D., Stee, P., Waters, R., Lehmitz, M., Bettonvil, F., Heininger, M., Woillez, J., Wolf, S., Yoffe, G., Szabados, L., Chiavassa, A., Borgniet, S., Breuval, L., Javanmardi, B., Ábrahám, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agócs, T., Alonso, J., Antonelli, P., Böhm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Buter, R., Castillo, R., Chelli, A., Cid, C., Clausse, J. -M., Connot, C., Conzelmann, R. D., De Haan, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Gabasch, A., Garces, E., Girard, P., Glazenborg, A., Gonté, F. Y. J., Herrera, J. C. González, Graser, U., Guajardo, P., Guitton, F., Hanenburg, H., Haubois, X., Hubin, N., Huerta, R., Idserda, J., Ives, D., Jakob, G., Jaskó, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Poole, R. Le, Leinert, C., Lizon, J. -L., Lopez, M., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nußbaum, E., Pallanca, L., Pasquini, L., Percheron, I., Duc, T. Phan, Pott, J. -U., Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th., Roelfsema, R., Rohloff, R. -R., Rousseau, S., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Venema, L. B., Vinther, J., Wittkowski, M., and Wrhel, F.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract: The nature of circumstellar envelopes (CSE) around Cepheids is still a matter of debate. The physical origin of their infrared (IR) excess could be either a shell of ionized gas, or a dust envelope, or both. This study aims at constraining the geometry and the IR excess of the environment of the long-period Cepheid $\ell$ Car (P=35.5 days) at mid-IR wavelengths to understand its physical nature. We first use photometric observations in various bands and Spitzer Space Telescope spectroscopy to constrain the IR excess of $\ell$ Car. Then, we analyze the VLTI/MATISSE measurements at a specific phase of observation, in order to determine the flux contribution, the size and shape of the environment of the star in the L band. We finally test the hypothesis of a shell of ionized gas in order to model the IR excess. We report the first detection in the L band of a centro-symmetric extended emission around l Car, of about 1.7$R_\star$ in FWHM, producing an excess of about 7.0\% in this band. In the N band, there is no clear evidence for dust emission from VLTI/MATISSE correlated flux and Spitzer data. On the other side, the modeled shell of ionized gas implies a more compact CSE ($1.13\pm0.02\,R_\star$) and fainter (IR excess of 1\% in the L band). We provide new evidences for a compact CSE of $\ell$ Car and we demonstrate the capabilities of VLTI/MATISSE for determining common properties of CSEs. While the compact CSE of $\ell$ Car is probably of gaseous nature, the tested model of a shell of ionized gas is not able to simultaneously reproduce the IR excess and the interferometric observations. Further Galactic Cepheids observations with VLTI/MATISSE are necessary for determining the properties of CSEs, which may also depend on both the pulsation period and the evolutionary state of the stars., Comment: 13 pages, 8 figures, accepted in Astronomy and Astrophysics
Published: 2021
Full Text: View/download PDF

4. The asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex?

Author: Varga, J., Hogerheijde, M., van Boekel, R., Klarmann, L., Petrov, R., Waters, L. B. F. M., Lagarde, S., Pantin, E., Berio, Ph., Weigelt, G., Robbe-Dubois, S., Lopez, B., Millour, F., Augereau, J. -C., Meheut, H., Meilland, A., Henning, Th., Jaffe, W., Bettonvil, F., Bristow, P., Hofmann, K. -H., Matter, A., Zins, G., Wolf, S., Allouche, F., Donnan, F., Schertl, D., Dominik, C., Heininger, M., Lehmitz, M., Cruzalèbes, P., Glindemann, A., Meisenheimer, K., Paladini, C., Schöller, M., Woillez, J., Venema, L., Kokoulina, E., Yoffe, G., Ábrahám, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agócs, T., Antonelli, P., Böhm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J. -M., Connot, C., Conzelmann, R. D., Danchi, W. -C., De Haan, M., Delbo, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Rosas, V. Gámez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Gonté, F. Y. J., Herrera, J. C. González, Graser, U., Guajardo, P., Guitton, F., Haubois, X., Hron, J., Hubin, N., Huerta, R., Isbell, J. W., Ives, D., Jakob, G., Jaskó, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Poole, R. Le, Leinert, C., Lizon, J. -L., Lopez, M., Mérand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nußbaum, E., Pallanca, L., Pasquini, L., Percheron, I., Pott, J. -U., Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th., Roelfsema, R., Rohloff, R. -R., Rousseau, S., Schuhler, N., Schuil, M., Soulain, A., Stee, P., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Vinther, J., Wittkowski, M., and Wrhel, F.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: Context. The inner few au region of planet-forming disks is a complex environment. High angular resolution observations have a key role in understanding the disk structure and the dynamical processes at work. Aims. In this study we aim to characterize the mid-infrared brightness distribution of the inner disk of the young intermediate-mass star HD 163296, from VLTI/MATISSE observations. Methods. We use geometric models to fit the data. Our models include a smoothed ring, a flat disk with inner cavity, and a 2D Gaussian. The models can account for disk inclination and for azimuthal asymmetries as well. We also perform numerical hydro-dynamical simulations of the inner edge of the disk. Results. Our modeling reveals a significant brightness asymmetry in the L-band disk emission. The brightness maximum of the asymmetry is located at the NW part of the disk image, nearly at the position angle of the semimajor axis. The surface brightness ratio in the azimuthal variation is $3.5 \pm 0.2$. Comparing our result on the location of the asymmetry with other interferometric measurements, we confirm that the morphology of the $r<0.3$ au disk region is time-variable. We propose that this asymmetric structure, located in or near the inner rim of the dusty disk, orbits the star. For the physical origin of the asymmetry, we tested a hypothesis where a vortex is created by Rossby wave instability, and we find that a unique large scale vortex may be compatible with our data. The half-light radius of the L-band emitting region is $0.33\pm 0.01$ au, the inclination is ${52^\circ}^{+5^\circ}_{-7^\circ}$, and the position angle is $143^\circ \pm 3^\circ$. Our models predict that a non-negligible fraction of the L-band disk emission originates inside the dust sublimation radius for $\mu$m-sized grains. Refractory grains or large ($\gtrsim 10\ \mu$m-sized) grains could be the origin for this emission., Comment: accepted for publication in A&A
Published: 2020
Full Text: View/download PDF

5. ARGOS at the LBT. Binocular laser guided ground layer adaptive optics

Author: Rabien, S., Angel, R., Barl, L., Beckmann, U., Busoni, L., Belli, S., Bonaglia, M., Borelli, J., Brynnel, J., Buschkamp, P., Cardwel, A., Contursi, A., Connot, C., Davies, R., Deysenroth, M., Durney, O., Eisenhauer, F., Elberich, M., Esposito, S., Frye, B., Gaessler, W., Gasho, V., Gemperlein, H., Genzel, R., Georgiev, I. Y., Green, R., Hart, M., Kohlmann, C., Kulas, M., Lefebvre, M., Mazzoni, T., Noenickx, J., Ott, T., de Xivry, G. Orban, Peter, D., Puglisi, A., Qin, Y., Quirrenbach, A., Raab, W., Rademacher, M., Rahmer, G., Rix, H. W., Rosensteiner, M., Salinari, P., Schwab, C., Sivitilli, A., Steinmetz, M., Storm, J., Veillet, C., Weigelt, G., and Ziegleder, J.
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract: Having completed its commissioning phase, the Advanced Rayleigh guided Ground-layer adaptive Optics System (ARGOS) facility is coming online for scientific observations at the Large Binocular Telescope (LBT). With six Rayleigh laser guide stars in two constellations and the corresponding wavefront sensing, ARGOS corrects the ground-layer distortions for both LBT 8.4m eyes with their adaptive secondary mirrors. Under regular observing conditions, this set-up delivers a point spread function (PSF) size reduction by a factor of ~2--3 compared to a seeing-limited operation. With the two LUCI infrared imaging and multi-object spectroscopy instruments receiving the corrected images, observations in the near-infrared can be performed at high spatial and spectral resolution. We discuss the final ARGOS technical set-up and the adaptive optics performance. We show that imaging cases with ground-layer adaptive optics (GLAO) are enhancing several scientific programmes, from cluster colour magnitude diagrams and Milky Way embedded star formation, to nuclei of nearby galaxies or extragalactic lensing fields. In the unique combination of ARGOS with the multi-object near-infrared spectroscopy available in LUCI over a 4x4 arcmin field of view, the first scientific observations have been performed on local and high-z objects. Those high spatial and spectral resolution observations demonstrate the capabilities now at hand with ARGOS at the LBT., Comment: 21 pages, 28 figures
Published: 2018
Full Text: View/download PDF

6. An overview of the mid-infrared spectro-interferometer MATISSE: science, concept, and current status

Author: Matter, A., Lopez, B., Antonelli, P., Lehmitz, M., Bettonvil, F., Beckmann, U., Lagarde, S., Jaffe, W., Petrov, R. G., Berio, P., Millour, F., Robbe-Dubois, S., Glindemann, A., Bristow, P., Schoeller, M., Lanz, T., Henning, T., Weigelt, G., Heininger, M., Morel, S., Cruzalebes, P., Meisenheimer, K., Hofferbert, R., Wolf, S., Bresson, Y., Agocs, T., Allouche, F., Augereau, J. -C., Avila, G., Bailet, C., Behrend, J., Van Belle, G., Berger, J. -P., van Boekel, R., Bourget, P., Brast, R., Clausse, J. -M., Connot, C., Conzelmann, R., Csepany, G., Danchi, W. C., Delbo, M., Dominik, C., van Duin, A., Elswijk, E., Fantei, Y., Finger, G., Gabasch, A., Gonté, F., Graser, U., Guitton, F., Guniat, S., De Haan, M., Haguenauer, P., Hanenburg, H., Hofmann, K. -H., Hogerheijde, M., ter Horst, R., Hron, J., Hummel, C., Isderda, J., Ives, D., Jakob, G., Jasko, A., Jolley, P., Kiraly, S., Kragt, J., Kroener, T., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Leinert, C., Lizon, J. -L., Lucuix, C., Marcotto, A., Martinache, F., Martinot-Lagarde, G., Mauclert, N., Mehrgan, L., Meilland, A., Mellein, M., Menardi, S., Merand, A., Neumann, U., Nussbaum, E., Ottogalli, S., Palsa, R., Panduro, J., Pantin, E., Percheron, I., Duc, T. Phan, Pott, J. -U., Pozna, E., Roelfsema, R., Rupprecht, G., Schertl, D., Schmidt, C., Schuil, M., Spang, A., stegmeier, J., Tromp, N., Vakili, F., Vannier, M., Wagner, K., Venema, L., and Woillez, J.
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: MATISSE is the second-generation mid-infrared spectrograph and imager for the Very Large Telescope Interferometer (VLTI) at Paranal. This new interferometric instrument will allow significant advances by opening new avenues in various fundamental research fields: studying the planet-forming region of disks around young stellar objects, understanding the surface structures and mass loss phenomena affecting evolved stars, and probing the environments of black holes in active galactic nuclei. As a first breakthrough, MATISSE will enlarge the spectral domain of current optical interferometers by offering the L and M bands in addition to the N band. This will open a wide wavelength domain, ranging from 2.8 to 13 um, exploring angular scales as small as 3 mas (L band) / 10 mas (N band). As a second breakthrough, MATISSE will allow mid-infrared imaging - closure-phase aperture-synthesis imaging - with up to four Unit Telescopes (UT) or Auxiliary Telescopes (AT) of the VLTI. Moreover, MATISSE will offer a spectral resolution range from R ~ 30 to R ~ 5000. Here, we present one of the main science objectives, the study of protoplanetary disks, that has driven the instrument design and motivated several VLTI upgrades (GRA4MAT and NAOMI). We introduce the physical concept of MATISSE including a description of the signal on the detectors and an evaluation of the expected performances. We also discuss the current status of the MATISSE instrument, which is entering its testing phase, and the foreseen schedule for the next two years that will lead to the first light at Paranal., Comment: SPIE Astronomical Telescopes and Instrumentation conference, June 2016, 11 pages, 6 Figures
Published: 2016
Full Text: View/download PDF

7. Direct constraint on the distance of y2 Velorum from AMBER/VLTI observations

Author: Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., Tallon-Bosc, I., Tallon, M., Thiébaut, E., Vakili, F., Malbet, F., Mourard, D., Zins, G., Roussel, A., Robbe-Dubois, S., Puget, P., Perraut, K., Lisi, F., Coarer, E. Le, Lagarde, S., Kern, P., Glück, L., Duvert, G., Chelli, A., Bresson, Y., Beckmann, U., Antonelli, P., Weigelt, G., Ventura, N., Vannier, M., Valtier, J. -C., Testi, L., Tatulli, E., Tasso, D., Stefanini, P., Stee, P., Solscheid, W., Schertl, D., Salinari, P., Sacchettini, M., Richichi, A., Reynaud, F., Rebattu, S., Rabbia, Y., Preibisch, T., Perrier, C., Pacini, F., Ohnaka, K., Nussbaum, E., Mouillet, D., Monin, J. -L., Mège, P., Mathias, P., Martinot-Lagarde, G., Mars, G., Marconi, A., Magnard, Y., Lopez, B., Contel, D. Le, Contel, J. -M. Le, Kraus, S., Kamm, D., Hofmann, K. -H., Utrera, O. Hernandez, Heininger, M., Heiden, M., Gil, C., Giani, E., Glentzlin, A., Gennari, S., Gallardo, A., Fraix-Burnet, D., Foy, R., Fossat, E., Forveille, T., Ferruzzi, D., Feautrier, P., Dugué, M., Driebe, T., De Souza, A. Domiciano, Delboulbé, A., Connot, C., Colin, J., Clausse, J. -M., Cassaing, F., Busoni, S., Bonhomme, S., Blöcker, T., Behrend, J., Baffa, C., Aristidi, E., Arezki, B., Agabi, K., Acke, B., Accardo, M., Kiekebusch, M., Rantakyrö, F., and Schoeller, Markus
Subjects: Astrophysics
Abstract: In this work, we present the first AMBER observations, of the Wolf-Rayet and O (WR+O) star binary system y2 Velorum. The AMBER instrument was used with the telescopes UT2, UT3, and UT4 on baselines ranging from 46m to 85m. It delivered spectrally dispersed visibilities, as well as differential and closure phases, with a resolution R = 1500 in the spectral band 1.95-2.17 micron. We interpret these data in the context of a binary system with unresolved components, neglecting in a first approximation the wind-wind collision zone flux contribution. We show that the AMBER observables result primarily from the contribution of the individual components of the WR+O binary system. We discuss several interpretations of the residuals, and speculate on the detection of an additional continuum component, originating from the free-free emission associated with the wind-wind collision zone (WWCZ), and contributing at most to the observed K-band flux at the 5% level. The expected absolute separation and position angle at the time of observations were 5.1±0.9mas and 66±15° respectively. However, we infer a separation of 3.62+0.11-0.30 mas and a position angle of 73+9-11°. Our analysis thus implies that the binary system lies at a distance of 368+38-13 pc, in agreement with recent spectrophotometric estimates, but significantly larger than the Hipparcos value of 258+41-31 pc.
Published: 2006
Full Text: View/download PDF

8. MATISSE

Author: Lopez, B., Lagarde, S., Wolf, S., Jaffe, W., Weigelt, G., Antonelli, P., Abraham, P., Augereau, J.-Ch., Beckman, U., Behrend, J., Berruyer, N., Bresson, Y., Chesneau, O., Clausse, J. M., Connot, C., Danchi, W. C., Delbo, M., Demyk, K., Domiciano, A., Dugué, M., Glazenborg, A., Graser, U., Hanenburg, H., Henning, Th., Heininger, M., Hofmann, K.-H., Hugues, Y., Jankov, S., Kraus, S., Laun, W., Leinert, Ch., Linz, H., Matter, A., Mathias, Ph., Meisenheimer, K., Menut, J.-L., Millour, F., Mosoni, L., Neumann, U., Niedzielski, A., Nussbaum, E., Petrov, R., Ratzka, Th., Robbe-Dubois, S., Roussel, A., Schertl, D., Schmider, F.-X., Stecklum, B., Thiebaut, E., Vakili, F., Wagner, K., Waters, L. B. F. M., Absil, O., Hron, J., Nardetto, N., Olofsson, J., Valat, B., Vannier, M., Goldman, B., Hönig, S., Cotton, W. D., Burton, W. B., editor, Christensen, Lars Lindberg, editor, and Moorwood, Alan, editor
Published: 2009
Full Text: View/download PDF

9. APerture Synthesis in the MID-Infrared with the VLTI

Author: Lopez, B., Wolf, S., Duguée, M., Graser, U., Mathias, Ph., Antonelli, P., Augereau, J.-C., Behrend, J., Berruyer, N., Bresson, Y., Chesneau, O., Connot, C., Demyk, K., DiFolco, E., Dutrey, A., Flament, S., Gitton, Ph., Glazenborg, A., Glindemann, A., Heininger, M., Henning, Th., Hofmann, K.-H., Hugues, Y., Jaffe, W., Jankov, S., Kraus, S., Lagarde, S., Leinert, Ch., Linz, H., Meisenheimer, K., Mosoni, L., Menut, J.-L., Neumann, U., Niedzielski, A., Przygodda, F., Puech, F., Ratzka, T., Rohloff, R., Roussel, A., Schertl, D., Schmider, F.-X., Stecklum, B., Thiéebaut, E., Vakili, F., Wagner, K., Weigelt, G., Leibundgut, Bruno, editor, Richichi, A., editor, Delplancke, F., editor, Paresce, F., editor, and Chelli, A., editor
Published: 2008
Full Text: View/download PDF

10. VLTI-MATISSE L- and N-band aperture-synthesis imaging of the unclassified B[e] star FS Canis Majoris

Author: Hofmann, K-H, Bensberg, A., Schertl, D., Weigelt, G., Wolf, S., Meilland, A., Millour, F., Waters, L. B. F. M., Kraus, S., Ohnaka, K., Lopez, B., Petrov, R. G., Lagarde, S., Berio, Ph, Allouche, F., Robbe-Dubois, S., Jaffe, W., Henning, Th, Paladini, C., Schoeller, M., Merand, A., Glindemann, A., Beckmann, U., Heininger, M., Bettonvil, F., Zins, G., Woillez, J., Bristow, P., Stee, P., Vakili, F., van Boekel, R., Hogerheijde, M. R., Dominik, C., Augereau, J-C, Matter, A., Hron, J., Pantin, E., Rivinius, Th, De Wit, W-J, Varga, J., Klarmann, L., Meisenheimer, K., Rosas, V. Gamez, Burtscher, L., Leftley, J., Isbell, J. W., Yoffe, G., Kokoulina, E., Danchi, W. C., Cruzalebes, P., Domiciano de Souza, A., Drevon, J., Hocde, V, Kreplin, A., Labadie, L., Connot, C., Nussbaum, E., Lehmitz, M., Antonelli, P., Graser, U., Leinert, C., Hofmann, K-H, Bensberg, A., Schertl, D., Weigelt, G., Wolf, S., Meilland, A., Millour, F., Waters, L. B. F. M., Kraus, S., Ohnaka, K., Lopez, B., Petrov, R. G., Lagarde, S., Berio, Ph, Allouche, F., Robbe-Dubois, S., Jaffe, W., Henning, Th, Paladini, C., Schoeller, M., Merand, A., Glindemann, A., Beckmann, U., Heininger, M., Bettonvil, F., Zins, G., Woillez, J., Bristow, P., Stee, P., Vakili, F., van Boekel, R., Hogerheijde, M. R., Dominik, C., Augereau, J-C, Matter, A., Hron, J., Pantin, E., Rivinius, Th, De Wit, W-J, Varga, J., Klarmann, L., Meisenheimer, K., Rosas, V. Gamez, Burtscher, L., Leftley, J., Isbell, J. W., Yoffe, G., Kokoulina, E., Danchi, W. C., Cruzalebes, P., Domiciano de Souza, A., Drevon, J., Hocde, V, Kreplin, A., Labadie, L., Connot, C., Nussbaum, E., Lehmitz, M., Antonelli, P., Graser, U., and Leinert, C.
Abstract: Context. FS Canis Majoris (FS CMa, HD 45677) is an unclassified B[e] star surrounded by an inclined dust disk. The evolutionary stage of FS CMa is still debated. Perpendicular to the circumstellar disk, a bipolar outflow was detected. Infrared aperture-synthesis imaging provides us with a unique opportunity to study the disk structure. Aims. Our aim is to study the intensity distribution of the disk of FS CMa in the mid-infrared L and N bands. Methods. We performed aperture-synthesis imaging of FS CMa with the MATISSE instrument (Multi AperTure mid-Infrared SpectroScopic Experiment) in the low spectral resolution mode to obtain images in the L and N bands. We computed radiative transfer models that reproduce the L- and N-band intensity distributions of the resolved disks. Results. We present L- and N-band aperture-synthesis images of FS CMa reconstructed in the wavelength bands of 3.4-3.8 and 8.6-9.0 mu m. In the L-band image, the inner rim region of an inclined circumstellar disk and the central object can be seen with a spatial resolution of 2.7 milliarcsec (mas). An inner disk cavity with an angular diameter of similar to 6 x 12 mas is resolved. The L-band disk consists of a bright northwestern (NW) disk region and a much fainter southeastern (SE) region. The images suggest that we are looking at the bright inner wall of the NW disk rim, which is on the far side of the disk. In the N band, only the bright NW disk region is seen. In addition to deriving the inclination and the inner disk radius, fitting the reconstructed brightness distributions via radiative transfer modelling allows one to constrain the innermost disk structure, in particular the shape of theinner disk rim.
Published: 2022

11. MATISSE, the VLTI mid-infrared imaging spectro-interferometer

Author: Lopez, B., Lagarde, S., Petrov, R. G., Jaffe, W., Antonelli, P., Allouche, F., Berio, P., Matter, A., Meilland, A., Millour, F., Robbe-Dubois, S., Henning, Th, Weigelt, G., Glindemann, A., Agocs, T., Bailet, Ch, Beckmann, U., Bettonvil, F., van Boekel, R., Bourget, P., Bresson, Y., Bristow, P., Cruzalebes, P., Eldswijk, E., Caujolle, Y. Fantei, Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Heininger, M., Hofmann, K-H, Kroes, G., Laun, W., Lehmitz, M., Leinert, C., Meisenheimer, K., Morel, S., Neumann, U., Paladini, C., Percheron, I, Riquelme, M., Schoeller, M., Stee, Ph, Venema, L., Woillez, J., Zins, G., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Alonso, J., Augereau, J-C, Boehm, A., Bazin, G., Beltran, J., Bensberg, A., Boland, W., Brast, R., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., Danchi, W-C, Delbo, M., Drevon, J., Dominik, C., van Duin, A., Ebert, M., Eisenhauer, F., Flament, S., Frahm, R., Rosas, V. Gamez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Glazenborg, A., Gonte, F. Y. J., Guitton, F., de Haan, M., Hanenburg, H., Haubois, X., Hocde, V, Hogerheijde, M., ter Horst, R., Hron, J., Hummel, C. A., Hubin, N., Huerta, R., Idserda, J., Isbell, J. W., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klarmann, L., Klein, R., Kragt, J., Kuindersma, S., Kokoulina, E., Labadie, L., Lacour, S., Leftley, J., Le Poole, R., Lizon, J-L, Lopez, M., Lykou, F., Merand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Menut, J. L., Mohr, L., Mosoni, L., Navarro, R., Nussbaum, E., Pallanca, L., Pantin, E., Pasquini, L., Duc, T. Phan, Pott, J-U, Pozna, E., Richichi, A., Ridinger, A., Rigal, F., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Salabert, D., Schertl, D., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., Toledo, P., Tristram, K., Tromp, N., Vakili, F., Varga, J., Vinther, J., Waters, L. B. F. M., Wittkowski, M., Wolf, S., Wrhel, F., Yoffe, G., Lopez, B., Lagarde, S., Petrov, R. G., Jaffe, W., Antonelli, P., Allouche, F., Berio, P., Matter, A., Meilland, A., Millour, F., Robbe-Dubois, S., Henning, Th, Weigelt, G., Glindemann, A., Agocs, T., Bailet, Ch, Beckmann, U., Bettonvil, F., van Boekel, R., Bourget, P., Bresson, Y., Bristow, P., Cruzalebes, P., Eldswijk, E., Caujolle, Y. Fantei, Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Heininger, M., Hofmann, K-H, Kroes, G., Laun, W., Lehmitz, M., Leinert, C., Meisenheimer, K., Morel, S., Neumann, U., Paladini, C., Percheron, I, Riquelme, M., Schoeller, M., Stee, Ph, Venema, L., Woillez, J., Zins, G., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Alonso, J., Augereau, J-C, Boehm, A., Bazin, G., Beltran, J., Bensberg, A., Boland, W., Brast, R., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., Danchi, W-C, Delbo, M., Drevon, J., Dominik, C., van Duin, A., Ebert, M., Eisenhauer, F., Flament, S., Frahm, R., Rosas, V. Gamez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Glazenborg, A., Gonte, F. Y. J., Guitton, F., de Haan, M., Hanenburg, H., Haubois, X., Hocde, V, Hogerheijde, M., ter Horst, R., Hron, J., Hummel, C. A., Hubin, N., Huerta, R., Idserda, J., Isbell, J. W., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klarmann, L., Klein, R., Kragt, J., Kuindersma, S., Kokoulina, E., Labadie, L., Lacour, S., Leftley, J., Le Poole, R., Lizon, J-L, Lopez, M., Lykou, F., Merand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Menut, J. L., Mohr, L., Mosoni, L., Navarro, R., Nussbaum, E., Pallanca, L., Pantin, E., Pasquini, L., Duc, T. Phan, Pott, J-U, Pozna, E., Richichi, A., Ridinger, A., Rigal, F., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Salabert, D., Schertl, D., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., Toledo, P., Tristram, K., Tromp, N., Vakili, F., Varga, J., Vinther, J., Waters, L. B. F. M., Wittkowski, M., Wolf, S., Wrhel, F., and Yoffe, G.
Abstract: Context. Optical interferometry is at a key development stage. The Very Large Telescope Interferometer (VLTI) has established a stable, robust infrastructure for long-baseline interferometry that is usable by general astronomical observers. The present second-generation instruments offer a wide wavelength coverage and improved performance. Their sensitivity and measurement accuracy lead to data and images of high reliability. Aims. We have developed the Multi AperTure mid-Infrared SpectroScopic Experiment (MATISSE) to access, for the first time, high resolution imaging in a wide spectral domain. Many front-line topics are explored with this new equipment, including: stellar activity and mass loss; planet formation and evolution in the gas and dust disks around young stars; and environment interaction and accretion processes around super massive black holes in active galactic nuclei. Methods. The instrument is a spectro-interferometric imager in the transmission windows called L, M, and N, from 2.8 to 13.0 microns, combining four optical beams from the VLTI's unit or auxiliary telescopes. Its concept, related observing procedure, data reduction, and calibration approach, is the product of 30 years of instrumental research and has benefitted from the expertise developed in the frame of the VLTI's first generation instruments. The instrument utilises a multi-axial beam combination that delivers spectrally dispersed fringes. The signal provides the following quantities at several spectral resolutions: photometric flux, coherent fluxes, visibilities, closure phases, wavelength differential visibilities and phases, and aperture-synthesis imaging. Results. This article provides an overview of the physical principle of the instrument and its functionalities. The motivation of the choice of the instrumental concept and the characteristics of the delivered signal are detailed with a description of the observing modes and of their performance limit. MATISSE offers four spectra
Published: 2022

12. MATISSE, the VLTI mid-infrared imaging spectro-interferometer

Author: Lopez, B., primary, Lagarde, S., additional, Petrov, R. G., additional, Jaffe, W., additional, Antonelli, P., additional, Allouche, F., additional, Berio, P., additional, Matter, A., additional, Meilland, A., additional, Millour, F., additional, Robbe-Dubois, S., additional, Henning, Th., additional, Weigelt, G., additional, Glindemann, A., additional, Agocs, T., additional, Bailet, Ch., additional, Beckmann, U., additional, Bettonvil, F., additional, van Boekel, R., additional, Bourget, P., additional, Bresson, Y., additional, Bristow, P., additional, Cruzalèbes, P., additional, Eldswijk, E., additional, Fanteï Caujolle, Y., additional, González Herrera, J. C., additional, Graser, U., additional, Guajardo, P., additional, Heininger, M., additional, Hofmann, K.-H., additional, Kroes, G., additional, Laun, W., additional, Lehmitz, M., additional, Leinert, C., additional, Meisenheimer, K., additional, Morel, S., additional, Neumann, U., additional, Paladini, C., additional, Percheron, I., additional, Riquelme, M., additional, Schoeller, M., additional, Stee, Ph., additional, Venema, L., additional, Woillez, J., additional, Zins, G., additional, Ábrahám, P., additional, Abadie, S., additional, Abuter, R., additional, Accardo, M., additional, Adler, T., additional, Alonso, J., additional, Augereau, J.-C., additional, Böhm, A., additional, Bazin, G., additional, Beltran, J., additional, Bensberg, A., additional, Boland, W., additional, Brast, R., additional, Burtscher, L., additional, Castillo, R., additional, Chelli, A., additional, Cid, C., additional, Clausse, J.-M., additional, Connot, C., additional, Conzelmann, R. D., additional, Danchi, W.-C., additional, Delbo, M., additional, Drevon, J., additional, Dominik, C., additional, van Duin, A., additional, Ebert, M., additional, Eisenhauer, F., additional, Flament, S., additional, Frahm, R., additional, Gámez Rosas, V., additional, Gabasch, A., additional, Gallenne, A., additional, Garces, E., additional, Girard, P., additional, Glazenborg, A., additional, Gonté, F. Y. J., additional, Guitton, F., additional, de Haan, M., additional, Hanenburg, H., additional, Haubois, X., additional, Hocdé, V., additional, Hogerheijde, M., additional, ter Horst, R., additional, Hron, J., additional, Hummel, C. A., additional, Hubin, N., additional, Huerta, R., additional, Idserda, J., additional, Isbell, J. W., additional, Ives, D., additional, Jakob, G., additional, Jaskó, A., additional, Jochum, L., additional, Klarmann, L., additional, Klein, R., additional, Kragt, J., additional, Kuindersma, S., additional, Kokoulina, E., additional, Labadie, L., additional, Lacour, S., additional, Leftley, J., additional, Le Poole, R., additional, Lizon, J.-L., additional, Lopez, M., additional, Lykou, F., additional, Mérand, A., additional, Marcotto, A., additional, Mauclert, N., additional, Maurer, T., additional, Mehrgan, L. H., additional, Meisner, J., additional, Meixner, K., additional, Mellein, M., additional, Menut, J. L., additional, Mohr, L., additional, Mosoni, L., additional, Navarro, R., additional, Nußbaum, E., additional, Pallanca, L., additional, Pantin, E., additional, Pasquini, L., additional, Phan Duc, T., additional, Pott, J.-U., additional, Pozna, E., additional, Richichi, A., additional, Ridinger, A., additional, Rigal, F., additional, Rivinius, Th., additional, Roelfsema, R., additional, Rohloff, R.-R., additional, Rousseau, S., additional, Salabert, D., additional, Schertl, D., additional, Schuhler, N., additional, Schuil, M., additional, Shabun, K., additional, Soulain, A., additional, Stephan, C., additional, Toledo, P., additional, Tristram, K., additional, Tromp, N., additional, Vakili, F., additional, Varga, J., additional, Vinther, J., additional, Waters, L. B. F. M., additional, Wittkowski, M., additional, Wolf, S., additional, Wrhel, F., additional, and Yoffe, G., additional
Published: 2022
Full Text: View/download PDF

13. VLTI-MATISSE L- and N-band aperture-synthesis imaging of the unclassified B[e] star FS Canis Majoris

Author: Hofmann, K.-H., primary, Bensberg, A., additional, Schertl, D., additional, Weigelt, G., additional, Wolf, S., additional, Meilland, A., additional, Millour, F., additional, Waters, L. B. F. M., additional, Kraus, S., additional, Ohnaka, K., additional, Lopez, B., additional, Petrov, R. G., additional, Lagarde, S., additional, Berio, Ph., additional, Allouche, F., additional, Robbe-Dubois, S., additional, Jaffe, W., additional, Henning, Th., additional, Paladini, C., additional, Schöller, M., additional, Mérand, A., additional, Glindemann, A., additional, Beckmann, U., additional, Heininger, M., additional, Bettonvil, F., additional, Zins, G., additional, Woillez, J., additional, Bristow, P., additional, Stee, P., additional, Vakili, F., additional, van Boekel, R., additional, Hogerheijde, M. R., additional, Dominik, C., additional, Augereau, J.-C., additional, Matter, A., additional, Hron, J., additional, Pantin, E., additional, Rivinius, Th., additional, de Wit, W.-J., additional, Varga, J., additional, Klarmann, L., additional, Meisenheimer, K., additional, Gámez Rosas, V., additional, Burtscher, L., additional, Leftley, J., additional, Isbell, J. W., additional, Yoffe, G., additional, Kokoulina, E., additional, Danchi, W. C., additional, Cruzalèbes, P., additional, Domiciano de Souza, A., additional, Drevon, J., additional, Hocdé, V., additional, Kreplin, A., additional, Labadie, L., additional, Connot, C., additional, Nußbaum, E., additional, Lehmitz, M., additional, Antonelli, P., additional, Graser, U., additional, and Leinert, C., additional
Published: 2022
Full Text: View/download PDF

14. VLTI-MATISSE chromatic aperture-synthesis imaging of η Carinae’s stellar wind across the Br α line

Author: Weigelt, G., Hofmann, K.-H., Schertl, D., Lopez, B., Petrov, R., Lagarde, S., Berio, Ph., Jaffe, W., Henning, Th., Millour, F., Meilland, A., Allouche, F., Robbe-Dubois, S., Matter, A., Cruzalèbes, Pierre, Hillier, D., Russell, C., Madura, T., Gull, T., Corcoran, M., Damineli, A., Moffat, A., Morris, P., Richardson, N., Paladini, C., Schöller, M., Mérand, A., Glindemann, A., Beckmann, U., Heininger, M., Bettonvil, F., Zins, G., Woillez, J., Bristow, P., Sanchez-Bermudez, J., Ohnaka, K., Kraus, S., Mehner, A., Wittkowski, M., Hummel, C., Stee, P., Vakili, F., Hartman, H., Navarete, F., Hamaguchi, K., Espinoza-Galeas, D., Stevens, I., Van Boekel, R., Wolf, S., Hogerheijde, M., Dominik, C., Augereau, J.-C., Pantin, E., Waters, L., Meisenheimer, K., Varga, J., Klarmann, L., Gámez Rosas, V., Burtscher, L., Leftley, J., Isbell, J., Hocdé, V., Yoffe, G., Kokoulina, E., Hron, J., Groh, J., Kreplin, A., Rivinius, Th., de Wit, W.-J., Danchi, W.-C., Domiciano De Souza, A., Drevon, J., Labadie, L., Connot, C., Nußbaum, E., Lehmitz, M., Antonelli, P., Graser, U., Leinert, C., Max-Planck-Institut für Radioastronomie (MPIFR), Joseph Louis LAGRANGE (LAGRANGE), Université Côte d'Azur (UCA)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Observatoire de la Côte d'Azur, COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Leiden Observatory [Leiden], Universiteit Leiden [Leiden], Max Planck Institute for Astronomy (MPIA), Observatoire de la Côte d'Azur (OCA), and Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [SDU]Sciences of the Universe [physics], [SDU.ASTR.SR]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR], Astrophysics::High Energy Astrophysical Phenomena, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]
Abstract: International audience; Context. Eta Carinae is a highly eccentric, massive binary system (semimajor axis ~15.5 au) with powerful stellar winds and a phase-dependent wind-wind collision (WWC) zone. The primary star, η Car A, is a luminous blue variable (LBV); the secondary, η Car B, is a Wolf-Rayet or O star with a faster but less dense wind. Aperture-synthesis imaging allows us to study the mass loss from the enigmatic LBV η Car. Understanding LBVs is a crucial step toward improving our knowledge about massive stars and their evolution. Aims. Our aim is to study the intensity distribution and kinematics of η Car’s WWC zone. Methods. Using the VLTI-MATISSE mid-infrared interferometry instrument, we perform Br α imaging of η Car’s distorted wind. Results. We present the first VLTI-MATISSE aperture-synthesis images of η Car A’s stellar windin several spectral channels distributed across the Br α 4.052 μm line (spectral resolving power R ~ 960). Our observations were performed close to periastron passage in February 2020 (orbital phase ~ 14.0022). The reconstructed iso-velocity images show the dependence of the primary stellar wind on wavelength or line-of-sight (LOS) velocity with a spatial resolution of 6 mas (~14 au). The radius of the faintest outer wind regions is ~26 mas (~60 au). At several negative LOS velocities, the primary stellar wind is less extended to the northwest than in other directions. This asymmetry is most likely caused by the WWC. Therefore, we see both the velocity field of the undisturbed primary wind and the WWC cavity. In continuum spectral channels, the primary star wind is more compact than in line channels. A fit of the observed continuum visibilities with the visibilities of a stellar wind CMFGEN model (CMFGEN is an atmosphere code developed to model the spectra of a variety of objects) provides a full width at half maximum fit diameter of the primary stellar wind of 2.84 ± 0.06 mas (6.54 ± 0.14 au). We comparethe derived intensity distributions with the CMFGEN stellar wind model and hydrodynamic WWC models.
Published: 2021

15. VLTI-MATISSE chromatic aperture-synthesis imaging of η Carinae’s stellar wind across the Brα line

Author: Weigelt, G., primary, Hofmann, K.-H., additional, Schertl, D., additional, Lopez, B., additional, Petrov, R. G., additional, Lagarde, S., additional, Berio, Ph., additional, Jaffe, W., additional, Henning, Th., additional, Millour, F., additional, Meilland, A., additional, Allouche, F., additional, Robbe-Dubois, S., additional, Matter, A., additional, Cruzalèbes, P., additional, Hillier, D. J., additional, Russell, C. M. P., additional, Madura, T., additional, Gull, T. R., additional, Corcoran, M. F., additional, Damineli, A., additional, Moffat, A. F. J., additional, Morris, P. W., additional, Richardson, N. D., additional, Paladini, C., additional, Schöller, M., additional, Mérand, A., additional, Glindemann, A., additional, Beckmann, U., additional, Heininger, M., additional, Bettonvil, F., additional, Zins, G., additional, Woillez, J., additional, Bristow, P., additional, Sanchez-Bermudez, J., additional, Ohnaka, K., additional, Kraus, S., additional, Mehner, A., additional, Wittkowski, M., additional, Hummel, C. A., additional, Stee, P., additional, Vakili, F., additional, Hartman, H., additional, Navarete, F., additional, Hamaguchi, K., additional, Espinoza-Galeas, D. A., additional, Stevens, I. R., additional, van Boekel, R., additional, Wolf, S., additional, Hogerheijde, M. R., additional, Dominik, C., additional, Augereau, J.-C., additional, Pantin, E., additional, Waters, L. B. F. M., additional, Meisenheimer, K., additional, Varga, J., additional, Klarmann, L., additional, Gámez Rosas, V., additional, Burtscher, L., additional, Leftley, J., additional, Isbell, J. W., additional, Hocdé, V., additional, Yoffe, G., additional, Kokoulina, E., additional, Hron, J., additional, Groh, J., additional, Kreplin, A., additional, Rivinius, Th., additional, de Wit, W.-J., additional, Danchi, W.-C., additional, Domiciano de Souza, A., additional, Drevon, J., additional, Labadie, L., additional, Connot, C., additional, Nußbaum, E., additional, Lehmitz, M., additional, Antonelli, P., additional, Graser, U., additional, and Leinert, C., additional
Published: 2021
Full Text: View/download PDF

16. Mid-infrared circumstellar emission of the long-period Cepheid ℓ Carinae resolved with VLTI/MATISSE

Author: Hocdé, V., primary, Nardetto, N., additional, Matter, A., additional, Lagadec, E., additional, Mérand, A., additional, Cruzalèbes, P., additional, Meilland, A., additional, Millour, F., additional, Lopez, B., additional, Berio, P., additional, Weigelt, G., additional, Petrov, R., additional, Isbell, J. W., additional, Jaffe, W., additional, Kervella, P., additional, Glindemann, A., additional, Schöller, M., additional, Allouche, F., additional, Gallenne, A., additional, Domiciano de Souza, A., additional, Niccolini, G., additional, Kokoulina, E., additional, Varga, J., additional, Lagarde, S., additional, Augereau, J.-C., additional, van Boekel, R., additional, Bristow, P., additional, Henning, Th., additional, Hofmann, K.-H., additional, Zins, G., additional, Danchi, W.-C., additional, Delbo, M., additional, Dominik, C., additional, Gámez Rosas, V., additional, Klarmann, L., additional, Hron, J., additional, Hogerheijde, M. R., additional, Meisenheimer, K., additional, Pantin, E., additional, Paladini, C., additional, Robbe-Dubois, S., additional, Schertl, D., additional, Stee, P., additional, Waters, R., additional, Lehmitz, M., additional, Bettonvil, F., additional, Heininger, M., additional, Woillez, J., additional, Wolf, S., additional, Yoffe, G., additional, Szabados, L., additional, Chiavassa, A., additional, Borgniet, S., additional, Breuval, L., additional, Javanmardi, B., additional, Ábrahám, P., additional, Abadie, S., additional, Abuter, R., additional, Accardo, M., additional, Adler, T., additional, Agócs, T., additional, Alonso, J., additional, Antonelli, P., additional, Böhm, A., additional, Bailet, C., additional, Bazin, G., additional, Beckmann, U., additional, Beltran, J., additional, Boland, W., additional, Bourget, P., additional, Brast, R., additional, Bresson, Y., additional, Burtscher, L., additional, Buter, R., additional, Castillo, R., additional, Chelli, A., additional, Cid, C., additional, Clausse, J.-M., additional, Connot, C., additional, Conzelmann, R. D., additional, De Haan, M., additional, Ebert, M., additional, Elswijk, E., additional, Fantei, Y., additional, Frahm, R., additional, Gabasch, A., additional, Garces, E., additional, Girard, P., additional, Glazenborg, A., additional, Gonté, F. Y. J., additional, González Herrera, J. C., additional, Graser, U., additional, Guajardo, P., additional, Guitton, F., additional, Hanenburg, H., additional, Haubois, X., additional, Hubin, N., additional, Huerta, R., additional, Idserda, J., additional, Ives, D., additional, Jakob, G., additional, Jaskó, A., additional, Jochum, L., additional, Klein, R., additional, Kragt, J., additional, Kroes, G., additional, Kuindersma, S., additional, Labadie, L., additional, Laun, W., additional, Le Poole, R., additional, Leinert, C., additional, Lizon, J.-L., additional, Lopez, M., additional, Marcotto, A., additional, Mauclert, N., additional, Maurer, T., additional, Mehrgan, L. H., additional, Meisner, J., additional, Meixner, K., additional, Mellein, M., additional, Mohr, L., additional, Morel, S., additional, Mosoni, L., additional, Navarro, R., additional, Neumann, U., additional, Nußbaum, E., additional, Pallanca, L., additional, Pasquini, L., additional, Percheron, I., additional, Phan Duc, T., additional, Pott, J.-U., additional, Pozna, E., additional, Ridinger, A., additional, Rigal, F., additional, Riquelme, M., additional, Rivinius, Th., additional, Roelfsema, R., additional, Rohloff, R.-R., additional, Rousseau, S., additional, Schuhler, N., additional, Schuil, M., additional, Shabun, K., additional, Soulain, A., additional, Stephan, C., additional, ter Horst, R., additional, Tromp, N., additional, Vakili, F., additional, van Duin, A., additional, Venema, L. B., additional, Vinther, J., additional, Wittkowski, M., additional, and Wrhel, F., additional
Published: 2021
Full Text: View/download PDF

17. VLTI-MATISSE chromatic aperture-synthesis imaging of eta Carinae's stellar wind across the Br alpha line Periastron passage observations in February 2020

Author: Weigelt, G., Hofmann, K. -H, Schertl, D., Lopez, B., Petrov, R. G., Lagarde, S., Berio, Ph., Jaffe, W., Henning, Th., Millour, F., Meilland, A., Allouche, F., Robbe-Dubois, S., Matter, A., Cruzalebes, P., Hillier, D. J., Russell, C. M. P., Madura, T., Gull, T. R., Corcoran, M. F., Damineli, A., Moffat, A. F. J., Morris, P. W., Richardson, N. D., Paladini, C., Schoeller, M., Merand, A., Glindemann, A., Beckmann, U., Heininger, M., Bettonvil, F., Zins, G., Woillez, J., Bristow, P., Sanchez-Bermudez, J., Ohnaka, K., Kraus, S., Mehner, A., Wittkowski, M., Hummel, C. A., Stee, P., Vakili, F., Hartman, Henrik, Navarete, F., Hamaguchi, K., Espinoza-Galeas, D. A., Stevens, I. R., van Boekel, R., Wolf, S., Hogerheijde, M. R., Dominik, C., Augereau, J. -C, Pantin, E., Waters, L. B. F. M., Meisenheimer, K., Varga, J., Klarmann, L., Gamez Rosas, V., Burtscher, L., Leftley, J., Isbell, J. W., Hocde, V., Yoffe, G., Kokoulina, E., Hron, J., Groh, J., Kreplin, A., Rivinius, Th., de Wit, W. -J, Danchi, W. -C, Domiciano de Souza, A., Drevon, J., Labadie, L., Connot, C., Nussbaum, E., Lehmitz, M., Antonelli, P., Graser, U., Leinert, C., Weigelt, G., Hofmann, K. -H, Schertl, D., Lopez, B., Petrov, R. G., Lagarde, S., Berio, Ph., Jaffe, W., Henning, Th., Millour, F., Meilland, A., Allouche, F., Robbe-Dubois, S., Matter, A., Cruzalebes, P., Hillier, D. J., Russell, C. M. P., Madura, T., Gull, T. R., Corcoran, M. F., Damineli, A., Moffat, A. F. J., Morris, P. W., Richardson, N. D., Paladini, C., Schoeller, M., Merand, A., Glindemann, A., Beckmann, U., Heininger, M., Bettonvil, F., Zins, G., Woillez, J., Bristow, P., Sanchez-Bermudez, J., Ohnaka, K., Kraus, S., Mehner, A., Wittkowski, M., Hummel, C. A., Stee, P., Vakili, F., Hartman, Henrik, Navarete, F., Hamaguchi, K., Espinoza-Galeas, D. A., Stevens, I. R., van Boekel, R., Wolf, S., Hogerheijde, M. R., Dominik, C., Augereau, J. -C, Pantin, E., Waters, L. B. F. M., Meisenheimer, K., Varga, J., Klarmann, L., Gamez Rosas, V., Burtscher, L., Leftley, J., Isbell, J. W., Hocde, V., Yoffe, G., Kokoulina, E., Hron, J., Groh, J., Kreplin, A., Rivinius, Th., de Wit, W. -J, Danchi, W. -C, Domiciano de Souza, A., Drevon, J., Labadie, L., Connot, C., Nussbaum, E., Lehmitz, M., Antonelli, P., Graser, U., and Leinert, C.
Abstract: Context. Eta Carinae is a highly eccentric, massive binary system (semimajor axis similar to 15.5 au) with powerful stellar winds and a phase-dependent wind-wind collision (WWC) zone. The primary star, eta Car A, is a luminous blue variable (LBV); the secondary, eta Car B, is a Wolf-Rayet or O star with a faster but less dense wind. Aperture-synthesis imaging allows us to study the mass loss from the enigmatic LBV eta Car. Understanding LBVs is a crucial step toward improving our knowledge about massive stars and their evolution. Aims. Our aim is to study the intensity distribution and kinematics of eta Car's WWC zone. Methods. Using the VLTI-MATISSE mid-infrared interferometry instrument, we perform Br alpha imaging of eta Car's distorted wind. Results. We present the first VLTI-MATISSE aperture-synthesis images of eta Car A's stellar windin several spectral channels distributed across the Br alpha 4.052 mu m line (spectral resolving power R similar to 960). Our observations were performed close to periastron passage in February 2020 (orbital phase similar to 14.0022). The reconstructed iso-velocity images show the dependence of the primary stellar wind on wavelength or line-of-sight (LOS) velocity with a spatial resolution of 6 mas (similar to 14 au). The radius of the faintest outer wind regions is similar to 26 mas (similar to 60 au). At several negative LOS velocities, the primary stellar wind is less extended to the northwest than in other directions. This asymmetry is most likely caused by the WWC. Therefore, we see both the velocity field of the undisturbed primary wind and the WWC cavity. In continuum spectral channels, the primary star wind is more compact than in line channels. A fit of the observed continuum visibilities with the visibilities of a stellar wind CMFGEN model (CMFGEN is an atmosphere code developed to model the spectra of a variety of objects) provides a full width at half maximum fit diameter of the primary stellar wind of 2.84 +/- 0.06 ma
Published: 2021
Full Text: View/download PDF

18. The asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex?

Author: Varga, J., Hogerheijde, M., van Boekel, R., Klarmann, L., Petrov, R., Waters, L. B. F. M., Lagarde, S., Pantin, E., Berio, Ph, Weigelt, G., Robbe-Dubois, S., Lopez, B., Millour, F., Augereau, J-C, Meheut, H., Meilland, A., Henning, Th, Jaffe, W., Bettonvil, F., Bristow, P., Hofmann, K-H, Matter, A., Zins, G., Wolf, S., Allouche, F., Donnan, F., Schertl, D., Dominik, C., Heininger, M., Lehmitz, M., Cruzalebes, P., Glindemann, A., Meisenheimer, K., Paladini, C., Schoeller, M., Woillez, J., Venema, L., Kokoulina, E., Yoffe, G., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agocs, T., Antonelli, P., Bohm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., Danchi, W-C, De Haan, M., Delbo, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Rosas, V. Gamez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Gonte, F. Y. J., Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Guitton, F., Haubois, X., Hron, J., Hubin, N., Huerta, R., Isbell, J. W., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Le Poole, R., Leinert, C., Lizon, J-L, Lopez, M., Merand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nussbaum, E., Pallanca, L., Pasquini, L., Percheron, I, Pott, J-U, Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Schuhler, N., Schuil, M., Soulain, A., Stee, P., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Vinther, J., Wittkowski, M., Wrhel, F., Varga, J., Hogerheijde, M., van Boekel, R., Klarmann, L., Petrov, R., Waters, L. B. F. M., Lagarde, S., Pantin, E., Berio, Ph, Weigelt, G., Robbe-Dubois, S., Lopez, B., Millour, F., Augereau, J-C, Meheut, H., Meilland, A., Henning, Th, Jaffe, W., Bettonvil, F., Bristow, P., Hofmann, K-H, Matter, A., Zins, G., Wolf, S., Allouche, F., Donnan, F., Schertl, D., Dominik, C., Heininger, M., Lehmitz, M., Cruzalebes, P., Glindemann, A., Meisenheimer, K., Paladini, C., Schoeller, M., Woillez, J., Venema, L., Kokoulina, E., Yoffe, G., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agocs, T., Antonelli, P., Bohm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., Danchi, W-C, De Haan, M., Delbo, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Rosas, V. Gamez, Gabasch, A., Gallenne, A., Garces, E., Girard, P., Gonte, F. Y. J., Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Guitton, F., Haubois, X., Hron, J., Hubin, N., Huerta, R., Isbell, J. W., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Le Poole, R., Leinert, C., Lizon, J-L, Lopez, M., Merand, A., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nussbaum, E., Pallanca, L., Pasquini, L., Percheron, I, Pott, J-U, Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Schuhler, N., Schuil, M., Soulain, A., Stee, P., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Vinther, J., Wittkowski, M., and Wrhel, F.
Abstract: Context. A complex environment exists in the inner few astronomical units of planet-forming disks. High-angular-resolution observations play a key role in our understanding of the disk structure and the dynamical processes at work.Aims. In this study we aim to characterize the mid-infrared brightness distribution of the inner disk of the young intermediate-mass star HD 163296 from early VLTI/MATISSE observations taken in the L- and N-bands. We put special emphasis on the detection of potential disk asymmetries.Methods. We use simple geometric models to fit the interferometric visibilities and closure phases. Our models include a smoothed ring, a flat disk with an inner cavity, and a 2D Gaussian. The models can account for disk inclination and for azimuthal asymmetries as well. We also perform numerical hydrodynamical simulations of the inner edge of the disk.Results. Our modeling reveals a significant brightness asymmetry in the L-band disk emission. The brightness maximum of the asymmetry is located at the NW part of the disk image, nearly at the position angle of the semimajor axis. The surface brightness ratio in the azimuthal variation is 3.5 +/- 0.2. Comparing our result on the location of the asymmetry with other interferometric measurements, we confirm that the morphology of the r < 0.3 au disk region is time-variable. We propose that this asymmetric structure, located in or near the inner rim of the dusty disk, orbits the star. To find the physical origin of the asymmetry, we tested a hypothesis where a vortex is created by Rossby wave instability, and we find that a unique large-scale vortex may be compatible with our data. The half-light radius of the L-band-emitting region is 0.33 +/- 0.01 au, the inclination is 52 degrees(+5 degrees)(-7 degrees) 52 degrees-7 degrees+5 degrees , and the position angle is 143 degrees +/- 3 degrees. Our models predict that a non-negligible fraction of the L-band disk emission originates inside the dust sublimation radius fo
Published: 2021

19. Mid-infrared circumstellar emission of the long-period Cepheid l Carinae resolved with VLTI/MATISSE

Author: Hocde, V, Nardetto, N., Matter, A., Lagadec, E., Merand, A., Cruzalebes, P., Meilland, A., Millour, F., Lopez, B., Berio, P., Weigelt, G., Petrov, R., Isbell, J. W., Jaffe, W., Kervella, P., Glindemann, A., Scholler, M., Allouche, F., Gallenne, A., de Souza, A. Domiciano, Niccolini, G., Kokoulina, E., Varga, J., Lagarde, S., Augereau, J-C, van Boekel, R., Bristow, P., Henning, Th, Hofmann, K-H, Zins, G., Danchi, W-C, Delbo, M., Dominik, C., Rosas, V. Gamez, Klarmann, L., Hron, J., Hogerheijde, M. R., Meisenheimer, K., Pantin, E., Paladini, C., Robbe-Dubois, S., Schertl, D., Stee, P., Waters, R., Lehmitz, M., Bettonvil, F., Heininger, M., Woillez, J., Wolf, S., Yoffe, G., Szabados, L., Chiavassa, A., Borgniet, S., Breuval, L., Javanmardi, B., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agocs, T., Alonso, J., Antonelli, P., Bohm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Buter, R., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., De Haan, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Gabasch, A., Garces, E., Girard, P., Glazenborg, A., Gonte, F. Y. J., Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Guitton, F., Hanenburg, H., Haubois, X., Hubin, N., Huerta, R., Idserda, J., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Le Poole, R., Leinert, C., Lizon, J-L, Lopez, M., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nussbaum, E., Pallanca, L., Pasquini, L., Percheron, I, Duc, T. Phan, Pott, J-U, Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Venema, L. B., Vinther, J., Wittkowski, M., Wrhel, F., Hocde, V, Nardetto, N., Matter, A., Lagadec, E., Merand, A., Cruzalebes, P., Meilland, A., Millour, F., Lopez, B., Berio, P., Weigelt, G., Petrov, R., Isbell, J. W., Jaffe, W., Kervella, P., Glindemann, A., Scholler, M., Allouche, F., Gallenne, A., de Souza, A. Domiciano, Niccolini, G., Kokoulina, E., Varga, J., Lagarde, S., Augereau, J-C, van Boekel, R., Bristow, P., Henning, Th, Hofmann, K-H, Zins, G., Danchi, W-C, Delbo, M., Dominik, C., Rosas, V. Gamez, Klarmann, L., Hron, J., Hogerheijde, M. R., Meisenheimer, K., Pantin, E., Paladini, C., Robbe-Dubois, S., Schertl, D., Stee, P., Waters, R., Lehmitz, M., Bettonvil, F., Heininger, M., Woillez, J., Wolf, S., Yoffe, G., Szabados, L., Chiavassa, A., Borgniet, S., Breuval, L., Javanmardi, B., Abraham, P., Abadie, S., Abuter, R., Accardo, M., Adler, T., Agocs, T., Alonso, J., Antonelli, P., Bohm, A., Bailet, C., Bazin, G., Beckmann, U., Beltran, J., Boland, W., Bourget, P., Brast, R., Bresson, Y., Burtscher, L., Buter, R., Castillo, R., Chelli, A., Cid, C., Clausse, J-M, Connot, C., Conzelmann, R. D., De Haan, M., Ebert, M., Elswijk, E., Fantei, Y., Frahm, R., Gabasch, A., Garces, E., Girard, P., Glazenborg, A., Gonte, F. Y. J., Herrera, J. C. Gonzalez, Graser, U., Guajardo, P., Guitton, F., Hanenburg, H., Haubois, X., Hubin, N., Huerta, R., Idserda, J., Ives, D., Jakob, G., Jasko, A., Jochum, L., Klein, R., Kragt, J., Kroes, G., Kuindersma, S., Labadie, L., Laun, W., Le Poole, R., Leinert, C., Lizon, J-L, Lopez, M., Marcotto, A., Mauclert, N., Maurer, T., Mehrgan, L. H., Meisner, J., Meixner, K., Mellein, M., Mohr, L., Morel, S., Mosoni, L., Navarro, R., Neumann, U., Nussbaum, E., Pallanca, L., Pasquini, L., Percheron, I, Duc, T. Phan, Pott, J-U, Pozna, E., Ridinger, A., Rigal, F., Riquelme, M., Rivinius, Th, Roelfsema, R., Rohloff, R-R, Rousseau, S., Schuhler, N., Schuil, M., Shabun, K., Soulain, A., Stephan, C., ter Horst, R., Tromp, N., Vakili, F., van Duin, A., Venema, L. B., Vinther, J., Wittkowski, M., and Wrhel, F.
Abstract: Context. The nature of circumstellar envelopes (CSEs) around Cepheids is a matter of ongoing debate. The physical origin of their infrared (IR) excess could be shown to either be made up of a shell of ionized gas, a dust envelope, or a combination of both.Aims. This study is aimed at constraining the geometry and the IR excess of the environment of the bright long-period Cepheid l Car (P = 35.5 days) at mid-IR wavelengths in order to understand its physical nature.Methods. We first used photometric observations in various bands (from the visible domain to the infrared) and Spitzer Space Telescope spectroscopy to constrain the IR excess of l Car. Then we analyzed the VLTI/MATISSE measurements at a specific phase of observation in order to determine the flux contribution as well as the size and shape of the environment of the star in the L band. Finally, we tested the hypothesis of a shell of ionized gas in order to model the IR excess.Results. We report the first detection in the L band of a centro-symmetric extended emission around l Car, of about 1.7 R-star in full width at half maximum, producing an excess of about 7.0% in this band.This latter value is used to calibrate the IR excess found when comparing the photometric observations in various bands and quasi-static atmosphere models. In the N band, there is no clear evidence for dust emission from VLTI/MATISSE correlated flux and Spitzer data. On the other side, the modeled shell of ionized gas implies a more compact CSE (1.13 0.02 R-star) that is also fainter (IR excess of 1% in the L band).Conclusions. We provide new evidence supporting a compact CSE for l Car and we demonstrate the capabilities of VLTI/MATISSE for determining common properties of CSEs. While the compact CSE of l Car is likely to be of a gaseous nature, the tested model of a shell of ionized gas is not able to simultaneously reproduce the IR excess and the interferometric observations. Further Galactic Cepheid observations with VLTI/MATISSE ar
Published: 2021

20. The asymmetric inner disk of the Herbig Ae star HD 163296 in the eyes of VLTI/MATISSE: evidence for a vortex?

Author: Varga, J., primary, Hogerheijde, M., additional, van Boekel, R., additional, Klarmann, L., additional, Petrov, R., additional, Waters, L. B. F. M., additional, Lagarde, S., additional, Pantin, E., additional, Berio, Ph., additional, Weigelt, G., additional, Robbe-Dubois, S., additional, Lopez, B., additional, Millour, F., additional, Augereau, J.-C., additional, Meheut, H., additional, Meilland, A., additional, Henning, Th., additional, Jaffe, W., additional, Bettonvil, F., additional, Bristow, P., additional, Hofmann, K.-H., additional, Matter, A., additional, Zins, G., additional, Wolf, S., additional, Allouche, F., additional, Donnan, F., additional, Schertl, D., additional, Dominik, C., additional, Heininger, M., additional, Lehmitz, M., additional, Cruzalèbes, P., additional, Glindemann, A., additional, Meisenheimer, K., additional, Paladini, C., additional, Schöller, M., additional, Woillez, J., additional, Venema, L., additional, Kokoulina, E., additional, Yoffe, G., additional, Ábrahám, P., additional, Abadie, S., additional, Abuter, R., additional, Accardo, M., additional, Adler, T., additional, Agócs, T., additional, Antonelli, P., additional, Böhm, A., additional, Bailet, C., additional, Bazin, G., additional, Beckmann, U., additional, Beltran, J., additional, Boland, W., additional, Bourget, P., additional, Brast, R., additional, Bresson, Y., additional, Burtscher, L., additional, Castillo, R., additional, Chelli, A., additional, Cid, C., additional, Clausse, J.-M., additional, Connot, C., additional, Conzelmann, R. D., additional, Danchi, W.-C., additional, De Haan, M., additional, Delbo, M., additional, Ebert, M., additional, Elswijk, E., additional, Fantei, Y., additional, Frahm, R., additional, Gámez Rosas, V., additional, Gabasch, A., additional, Gallenne, A., additional, Garces, E., additional, Girard, P., additional, Gonté, F. Y. J., additional, González Herrera, J. C., additional, Graser, U., additional, Guajardo, P., additional, Guitton, F., additional, Haubois, X., additional, Hron, J., additional, Hubin, N., additional, Huerta, R., additional, Isbell, J. W., additional, Ives, D., additional, Jakob, G., additional, Jaskó, A., additional, Jochum, L., additional, Klein, R., additional, Kragt, J., additional, Kroes, G., additional, Kuindersma, S., additional, Labadie, L., additional, Laun, W., additional, Le Poole, R., additional, Leinert, C., additional, Lizon, J.-L., additional, Lopez, M., additional, Mérand, A., additional, Marcotto, A., additional, Mauclert, N., additional, Maurer, T., additional, Mehrgan, L. H., additional, Meisner, J., additional, Meixner, K., additional, Mellein, M., additional, Mohr, L., additional, Morel, S., additional, Mosoni, L., additional, Navarro, R., additional, Neumann, U., additional, Nußbaum, E., additional, Pallanca, L., additional, Pasquini, L., additional, Percheron, I., additional, Pott, J.-U., additional, Pozna, E., additional, Ridinger, A., additional, Rigal, F., additional, Riquelme, M., additional, Rivinius, Th., additional, Roelfsema, R., additional, Rohloff, R.-R., additional, Rousseau, S., additional, Schuhler, N., additional, Schuil, M., additional, Soulain, A., additional, Stee, P., additional, Stephan, C., additional, ter Horst, R., additional, Tromp, N., additional, Vakili, F., additional, van Duin, A., additional, Vinther, J., additional, Wittkowski, M., additional, and Wrhel, F., additional
Published: 2021
Full Text: View/download PDF

21. ARGOS at the LBT

Author: Rabien, S., primary, Angel, R., additional, Barl, L., additional, Beckmann, U., additional, Busoni, L., additional, Belli, S., additional, Bonaglia, M., additional, Borelli, J., additional, Brynnel, J., additional, Buschkamp, P., additional, Cardwell, A., additional, Contursi, A., additional, Connot, C., additional, Davies, R., additional, Deysenroth, M., additional, Durney, O., additional, Eisenhauer, F., additional, Elberich, M., additional, Esposito, S., additional, Frye, B., additional, Gaessler, W., additional, Gasho, V., additional, Gemperlein, H., additional, Genzel, R., additional, Georgiev, I. Y., additional, Green, R., additional, Hart, M., additional, Kohlmann, C., additional, Kulas, M., additional, Lefebvre, M., additional, Mazzoni, T., additional, Noenickx, J., additional, Orban de Xivry, G., additional, Ott, T., additional, Peter, D., additional, Puglisi, A., additional, Qin, Y., additional, Quirrenbach, A., additional, Raab, W., additional, Rademacher, M., additional, Rahmer, G., additional, Rosensteiner, M., additional, Rix, H. W., additional, Salinari, P., additional, Schwab, C., additional, Sivitilli, A., additional, Steinmetz, M., additional, Storm, J., additional, Veillet, C., additional, Weigelt, G., additional, and Ziegleder, J., additional
Published: 2018
Full Text: View/download PDF

22. ARGOS at the LBT: Binocular laser guided ground-layer adaptive optics.

Author: Rabien, S., Angel, R., Barl, L., Beckmann, U., Busoni, L., Belli, S., Bonaglia, M., Borelli, J., Brynnel, J., Buschkamp, P., Cardwell, A., Contursi, A., Connot, C., Davies, R., Deysenroth, M., Durney, O., Eisenhauer, F., Elberich, M., Esposito, S., and Frye, B.
Subjects: RAYLEIGH number, GALACTIC nuclei, SPECTRUM analysis, WAVEFRONTS (Optics)
Abstract: Having completed its commissioning phase, the Advanced Rayleigh guided Ground-layer adaptive Optics System (ARGOS) facility is coming online for scientific observations at the Large Binocular Telescope (LBT). With six Rayleigh laser guide stars in two constellations and the corresponding wavefront sensing, ARGOS corrects the ground-layer distortions for both LBT 8.4 m eyes with their adaptive secondary mirrors. Under regular observing conditions, this set-up delivers a point spread function (PSF) size reduction by a factor of 2–3 compared to a seeing-limited operation. With the two LUCI infrared imaging and multi-object spectroscopy instruments receiving the corrected images, observations in the near-infrared can be performed at high spatial and spectral resolution. We discuss the final ARGOS technical set-up and the adaptive optics performance. We show that imaging cases with ground-layer adaptive optics (GLAO) are enhancing several scientific programmes, from cluster colour magnitude diagrams and Milky Way embedded star formation, to nuclei of nearby galaxies or extragalactic lensing fields. In the unique combination of ARGOS with the multi-object near-infrared spectroscopy available in LUCI over a 4 × 4 arcmin field of view, the first scientific observations have been performed on local and high-z objects. Those high spatial and spectral resolution observations demonstrate the capabilities now at hand with ARGOS at the LBT. [ABSTRACT FROM AUTHOR]
Published: 2019
Full Text: View/download PDF

23. An overview of the mid-infrared spectro-interferometer MATISSE: science, concept, and current status

Author: Matter, A., additional, Lopez, B., additional, Antonelli, P., additional, Lehmitz, M., additional, Bettonvil, F., additional, Beckmann, U., additional, Lagarde, S., additional, Jaffe, W., additional, Petrov, R., additional, Berio, P., additional, Millour, F., additional, Robbe-Dubois, S., additional, Glindemann, A., additional, Bristow, P., additional, Schoeller, M., additional, Lanz, T., additional, Henning, T., additional, Weigelt, G., additional, Heininger, M., additional, Morel, S., additional, Cruzalebes, P., additional, Meisenheimer, K., additional, Hofferbert, R., additional, Wolf, S., additional, Bresson, Y., additional, Agocs, T., additional, Allouche, F., additional, Augereau, J.-C., additional, Avila, G., additional, Bailet, C., additional, Behrend, J., additional, van Belle, G., additional, Berger, J.-P., additional, van Boekel, R., additional, Bourget, P., additional, Brast, R., additional, Clausse, J.-M., additional, Connot, C., additional, Conzelmann, R., additional, Csepany, G., additional, Danchi, W. C., additional, Delbo, M., additional, Dominik, C., additional, van Duin, A., additional, Elswijk, E., additional, Fantei, Y., additional, Finger, G., additional, Gabasch, A., additional, Gonté, F., additional, Graser, U., additional, Guitton, F., additional, Guniat, S., additional, De Haan, M., additional, Haguenauer, P., additional, Hanenburg, H., additional, Hofmann, K.-H., additional, Hogerheijde, M., additional, ter Horst, R., additional, Hron, J., additional, Hummel, C, additional, Isderda, J., additional, Ives, D., additional, Jakob, G., additional, Jasko, A., additional, Jolley, P., additional, Kiraly, S., additional, Kragt, J., additional, Kroener, T., additional, Kroes, G., additional, Kuindersma, S., additional, Labadie, L., additional, Laun, W., additional, Leinert, C., additional, Lizon, J.-L., additional, Lucuix, C., additional, Marcotto, A., additional, Martinache, F., additional, Martinot-Lagarde, G., additional, Mauclert, N., additional, Mehrgan, L., additional, Meilland, A., additional, Mellein, M., additional, Menardi, S., additional, Merand, A., additional, Neumann, U., additional, Nussbaum, E., additional, Ottogalli, S., additional, Palsa, R., additional, Panduro, J., additional, Pantin, E., additional, Percheron, I., additional, Phan Duc, T., additional, Pott, J.-U., additional, Pozna, E., additional, Roelfsema, R., additional, Rupprecht, G., additional, Schertl, D., additional, Schmidt, C., additional, Schuil, M., additional, Spang, A., additional, Stegmeier, J., additional, Tromp, N., additional, Vakili, F., additional, Vannier, M., additional, Wagner, K., additional, Venema, L., additional, and Woillez, J., additional
Published: 2016
Full Text: View/download PDF

24. MATISSE, perspective of imaging in the mid-infrared at the VLTI

Author: Lopez, B., Antonelli, P., Wolf, S., Lagarde, S., Jaffe, W., Navarro, R., Graser, U., Petrov, R., Weigelt, G., Bresson, Y., Hofmann, K. H., Beckman, U., Henning, T., Laun, W., Ch. Leinert, Robbe-Dubois, S., Vakili, F., Richichi, A., Abraham, P., C Augereau, J., Behrend, J., Ph. Berio, Berruyer, N., Chesneau, O., Clausse, J. M., Connot, C., Demyk, K., Danchi, W. C., Dugué, M., Finger, G., Flament, S., Glazenborg, A., Hannenburg, H., Heininger, M., Hugues, Y., Hron, J., Jankov, S., Kerschbaum, F., Kroes, G., Linz, H., L Lizon, J., Ph. Mathias, Mathar, R., Matter, A., Menut, J. L., Meisenheimer, K., Millour, F., Nardetto, N., Neumann, U., Nussbaum, E., Niedzielski, A., Mosoni, L., Olofsson, J., Rabbia, Y., Ratzka, T., Rigal, F., Roussel, A., Schertl, D., François-Xavier Schmider, Stecklum, B., Éric Thiébaut, Vannier, M., Valat, B., Wagner, K., Waters, L. B. F. M., Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Astronomie (MPIA), Max-Planck-Gesellschaft, Laboratoire Universitaire d'Astrophysique de Nice (LUAN), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Radioastronomie (MPIFR), Observatoire de la Côte d'Azur (OCA), Centre National de la Recherche Scientifique (CNRS), European Southern Observatory (ESO), Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Institut für Astrophysik [Wien], Universität Wien, Thüringer Landessternwarte Tautenburg (TLS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: International audience; MATISSE is foreseen as a mid-infrared spectro-interferometer combining the beams of up to four UTs/ATs of the Very Large Telescope Interferometer (VLTI) of the European Southern Observatory. The related science case study demonstrates the enormous capability of a new generation mid-infrared beam combiner. MATISSE will constitute an evolution of the two-beam interferometric instrument MIDI. MIDI is a very successful instrument which offers a perfect combination of spectral and angular resolution. New characteristics present in MATISSE will give access to the mapping and the distribution of the material (typically dust) in the circumstellar environments by using a wide mid-infrared band coverage extended to L, M and N spectral bands. The four beam combination of MATISSE provides an efficient UV-coverage : 6 visibility points are measured in one set and 4 closure phase relations which can provide aperture synthesis images in the mid-infrared spectral regime.
Published: 2008

25. An asymmetry detected in the disk of Kappa CMa with the AMBER/VLTI

Author: Meilland, Anthony, Millour, Florentin, Stee, Philippe, Domiciano De Souza, Armando, Petrov, Romain, Mourard, Denis, Jankov, Slobodan, Robbe-Dubois, Sylvie, Spang, Alain, Arisitidi, Eric, Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Malbet, F., Perraut, K., Puget, P., Robbe-Dubois, S., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Arezki, B., Altariba, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Connot, C., Delboulbé, A., Domicinano De Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Gennari, S., Glentzlin, A., Giani, E., Gilinst, C., Heiden, M., Heininger, M., Hernandez, O., Hofmann, K.-H., Kamm, D., Kraus, S., Le Contel, D., Le Contel, J.-M., Lopez, B., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Millour, F., Monin, J.-L., Mouillet, D., Mourard, D., Mège, P., Nussbaum, E., Ohnaka, K., Pacini, F., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Roussel, A., Sacchettini, M., Salinari, P., Schertl, D., Solscheid, W., Stee, P., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Tatulli, E., Testi, L., Valtier, J.-C., Vannier, M., Ventura, N., Kiekebusch, M., Schöller, M., Laboratoire Gemini (LG), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Universitaire d'Astrophysique de Nice (LUAN), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), and COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Stars: emission-line, Astrophysics (astro-ph), Stars: individual (kappa CMa), FOS: Physical sciences, Be, Astrophysics, Techniques: high angular resolution, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Stars: Keplerian rotation, Techniques: interferometric, Stars: circumstellar matter, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract: International audience; Aims. We study the geometry and kinematics of the circumstellar environment of the Be star Kappa CMa in the Br gamma emission line and its nearby continuum. Methods. We use the VLTI/AMBER instrument operating in the K band which provides a spatial resolution of about 6 mas with a spectral resolution of 1500 to study the kinematics within the disk and to infer its rotation law. In order to obtain more kinematical constraints we also use an high spectral resolution Pa beta line profile obtain in December 2005 at the Observatorio do Pico do Dios, Brazil and we compile V/R line profile variations and spectral energy distribution data points from the literature. Results. Using differential visibilities and differential phases across the Br gamma line we detect an asymmetry in the disk. Moreover, we found that kappa CMa seems difficult to fit within the classical scenario for Be stars, illustrated recently by alpha Arae observations, i.e. a fast rotating B star close to its breakup velocity surrounded by a Keplerian circumstellar disk with an enhanced polar wind. Finally we discuss the possibility for kappa CMa to be a critical rotator with a Keplerian rotating disk and try to see if the detected asymmetry can be interpreted within the "one-armed" viscous disk framework.
Published: 2006

26. MATISSE a four beams combiner in the mid-infrared for the VLTI

Author: Lagarde, S., Lopez, B., Antonelli, P., Beckman, U., Behrend, J., Bresson, Y., Chesneau, O., Connot, C., Dugué, M., Glazenborg, A., Graser, U., Henning, T., Hofmann, K.H., Heininger, M., Hugues, Y., Jaffe, W., Kraus, S., Laun, W., Leinert, Ch., Matter, A., Menut, J.L., Millour, F., Neumann, U., Nussbaum, E., Niedzielski, A., Mosoni, L., Petrov., G., Ratzka, R., Robbe-Dubois, S., Roussel, A., Wagner, K., Waters, L.B.F.M., Weigelt, G., Wolf, S., Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Observatoire de la Côte d'Azur (OCA), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)
Abstract: Advances in Stellar Interferometry, SPIE 6268, (2006); International audience
Published: 2006

27. MATISSE, perspective of imaging in the mid-infrared at the VLTI

Author: Lopez, B., Wolf, S., Lagarde, S., Abraham, P., Antonelli, P., Augereau, J.C., Beckman, U., Behrend, J., Berruyer, N., Bresson, Y., Chesneau, O., Clausse, J.M., Connot, C., Demyk, K., Danchi, W.C., Dugué, M., Flament, S., Glazenborg, A., Graser, U., Henning, T., Hofmann, K.H., Heininger, M., Hugues, Y., Jaffe, W., Jankov, S., Kraus, S., Laun, W., Leinert, C., Linz, H., Mathias, P., Meisenheimer, K., Matter, A., Menut, J.L., Millour, F., Neumann, U., Nussbaum, E., Niedzielski, A., Mosonic, L., Petrov, R.G., Ratzka, T., Robbe-Dubois, S., Roussel, A., Schertl, D., Schmider, F.-X., Stecklum, B., Thiebaut, E., Vakili, F., Wagner, K., Waters, L.B.F.M., Weigelt, G., Monnier, J.D., Schöller, M., Laboratoire Hippolyte Fizeau (FIZEAU), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Low Energy Astrophysics (API, FNWI), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, and Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: 010504 meteorology & atmospheric sciences, 0103 physical sciences, 010303 astronomy & astrophysics, 01 natural sciences, 0105 earth and related environmental sciences
Abstract: Our objective is the development of mid-infrared imaging at the VLTI. The related science case study demonstrates the enormous capability of a new generation mid-infrared beam combiner. MATISSE will constitute an evolution of the two-beam interferometric instrument MIDI by increasing the number of recombined beams up to four. MIDI is a very successful instrument which offers a perfect combination of spectral and angular resolution. New characteristics present in MATISSE will give access to the mapping and the distribution of the material (typically dust) in the circumstellar environments by using a wide mid-infrared band coverage extended to L, M, N and Q spectral bands. The four beam combination of MATISSE provides an efficient UV-coverage: 6 visibility points are measured in one set and 4 closure phase relations which can provide for the first time aperture synthesis images in the mid-infrared spectral regime. The mid-infrared spectral domain is very relevant for the study of the environment of various astrophysical sources. Our science case studies show the wide field of applications of MATISSE. They will be illustrated in the first part of this presentation through the perspective of imaging the circumstellar environments/discs of young stellar objects. The MATISSE characteristics will be given in a second part of the presentation.
Published: 2006

28. Disk and wind interaction in the young stellar object MWC 297 spatially resolved with VLTI/AMBER

Author: Malbet, F., Benisty, M., de Wit, W.J., Kraus, S., Meilland, A., Millour, F., Tatulli, E., Berger, J.P., Chesneau, O., Hofmann, K.H., Isella, A., Natta, A., Petrov, R., Preibisch, T., Stee, P., Testi, L., Weigelt, G., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Duvert, G., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Robbe-Dubois, S., Roussel, A., Zins, G., Accardo, M., Acke, B., Agabi, K., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Driebe, T., Dugué, M., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, Renaud, Fraix-Burnet, D., Gallardo, A., Gennari, S., Glentzlin, A., Giani, E., Gil, C., Heiden, M., Heininger, M., Kamm, D., Le Contel, D., Le Contel, J.-M., Lopez, B., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Monin, J.-L., Mouillet, D., Mourard, D., Mège, P., Nussbaum, E., Ohnaka, K., Pacheco, J., Pacini, F., Perrier, C., Puget, P., Rabbia, Y., Rebattu, S., Reynaud, François, Richichi, A., Sacchettini, M., Salinari, P., Schertl, D., Solscheid, W., Stefanini, P., Tallon, Michel, Tallon-Bosc, Isabelle, Tasso, D., Valtier, J.-C., Vannier, M., Ventura, N., Kiekebusch, M., Rantakyrö, F., Schöller, M., Laboratoire d'Astrophysique de Grenoble (LAOG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Max-Planck-Institut für Radioastronomie (MPIFR), Laboratoire Gemini (LG), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Universitaire d'Astrophysique de Nice (LUAN), Université Nice Sophia Antipolis (... - 2019) (UNS), Université Côte d'Azur (UCA)-Université Côte d'Azur (UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), ONERA - The French Aerospace Lab [Châtillon], ONERA, Centre de Recherche Astrophysique de Lyon (CRAL), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon), Division technique INSU/SDU (DTI), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), European Southern Observatory (ESO), AMBER, Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Centre National de la Recherche Scientifique (CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), ONERA-Université Paris Saclay (COmUE), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Université Côte d'Azur (UCA)-Centre National de la Recherche Scientifique (CNRS), Université Nice Sophia Antipolis (1965 - 2019) (UNS), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Protoplanetary disks, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], [SDU.ASTR.CO]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics::High Energy Astrophysical Phenomena, Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, Pre-main-sequence stars, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Planetary systems, Early-type stars, Emission-line stars, Accretion disks, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Infrared, Interferometric Techniques, Astrophysics::Galaxy Astrophysics
Abstract: The young stellar object MWC 297 has been observed with the VLT interferometer equipped with the AMBER instrument. MWC 297 has been spatially resolved in the continuum with a visibility of 0.50 as well as in the Br gamma emission line where the visibility decrease to a lower value of 0.33. This change in the visibility with the wavelength can be interpreted by the presence of an optically thick disk responsible for the visibility in the continuum and of a stellar wind traced by Br gamma and whose apparent size is 40% larger. We validate this interpretation by building a model of the stellar environment that combines a geometrically thin, optically thick accretion disk model consisting of gas and dust, and a latitude-dependent stellar wind outflowing above the disk surface. The continuum emission and visibilities obtained from this model are fully consistent with the interferometric AMBER data. They agree also with existing optical, near-infrared spectra and other broad-band near-infrared interferometric visibilities. A picture emerges in which MWC 297 is surrounded by an equatorial flat disk that is possibly still accreting and an outflowing wind which has a much higher velocity in the polar region than at the equator. [abridged], Comment: 13 pages; to be published in A&A; Acceptance day: 11/10/2005
Published: 2005
Full Text: View/download PDF

29. MATISSE

Author: Lopez, B., primary, Lagarde, S., additional, Wolf, S., additional, Jaffe, W., additional, Weigelt, G., additional, Antonelli, P., additional, Abraham, P., additional, Augereau, J.-Ch., additional, Beckman, U., additional, Behrend, J., additional, Berruyer, N., additional, Bresson, Y., additional, Chesneau, O., additional, Clausse, J. M., additional, Connot, C., additional, Danchi, W. C., additional, Delbo, M., additional, Demyk, K., additional, Domiciano, A., additional, Dugué, M., additional, Glazenborg, A., additional, Graser, U., additional, Hanenburg, H., additional, Henning, Th., additional, Heininger, M., additional, Hofmann, K.-H., additional, Hugues, Y., additional, Jankov, S., additional, Kraus, S., additional, Laun, W., additional, Leinert, Ch., additional, Linz, H., additional, Matter, A., additional, Mathias, Ph., additional, Meisenheimer, K., additional, Menut, J.-L., additional, Millour, F., additional, Mosoni, L., additional, Neumann, U., additional, Niedzielski, A., additional, Nussbaum, E., additional, Petrov, R., additional, Ratzka, Th., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Schertl, D., additional, Schmider, F.-X., additional, Stecklum, B., additional, Thiebaut, E., additional, Vakili, F., additional, Wagner, K., additional, Waters, L. B. F. M., additional, Absil, O., additional, Hron, J., additional, Nardetto, N., additional, Olofsson, J., additional, Valat, B., additional, Vannier, M., additional, Goldman, B., additional, Hönig, S., additional, and Cotton, W. D., additional
Full Text: View/download PDF

30. APerture Synthesis in the MID-Infrared with the VLTI

Author: Lopez, B., primary, Wolf, S., additional, Duguée, M., additional, Graser, U., additional, Mathias, Ph., additional, Antonelli, P., additional, Augereau, J.-C., additional, Behrend, J., additional, Berruyer, N., additional, Bresson, Y., additional, Chesneau, O., additional, Connot, C., additional, Demyk, K., additional, DiFolco, E., additional, Dutrey, A., additional, Flament, S., additional, Gitton, Ph., additional, Glazenborg, A., additional, Glindemann, A., additional, Heininger, M., additional, Henning, Th., additional, Hofmann, K.-H., additional, Hugues, Y., additional, Jaffe, W., additional, Jankov, S., additional, Kraus, S., additional, Lagarde, S., additional, Leinert, Ch., additional, Linz, H., additional, Meisenheimer, K., additional, Mosoni, L., additional, Menut, J.-L., additional, Neumann, U., additional, Niedzielski, A., additional, Przygodda, F., additional, Puech, F., additional, Ratzka, T., additional, Rohloff, R., additional, Roussel, A., additional, Schertl, D., additional, Schmider, F.-X., additional, Stecklum, B., additional, Thiéebaut, E., additional, Vakili, F., additional, Wagner, K., additional, and Weigelt, G., additional
Full Text: View/download PDF

31. ARGOS wavefront sensing: from detection to correction

Author: Orban de Xivry, Gilles, additional, Bonaglia, M., additional, Borelli, J., additional, Busoni, L., additional, Connot, C., additional, Esposito, S., additional, Gaessler, W., additional, Kulas, M., additional, Mazzoni, T., additional, Puglisi, A., additional, Rabien, S., additional, Storm, J., additional, and Ziegleder, J., additional
Published: 2014
Full Text: View/download PDF

32. MATISSE status report and science forecast

Author: Lopez, B., additional, Lagarde, S., additional, Jaffe, W., additional, Petrov, R., additional, Schöller, M., additional, Antonelli, P., additional, Beckman, U., additional, Bério, Ph., additional, Bettonvil, F., additional, Graser, U., additional, Millour, F., additional, Robbe-Dubois, S., additional, Venema, L., additional, Wolf, S., additional, Bristow, P., additional, Glindemann, A., additional, Gonzalez, J.-C., additional, Lanz, Th., additional, Henning, T., additional, Weigelt, G., additional, Agócs, T., additional, Augereau, J.-C., additional, Ávila, G., additional, Bailet, C., additional, Behrend, J., additional, Berger, J.-P., additional, von Boekel, Roy, additional, Bonhomme, S., additional, Bourget, P., additional, Brast, R., additional, Bresson, Y., additional, Clausse, J. M., additional, Chesneau, O., additional, Csépány, G., additional, Connot, C., additional, Crida, A., additional, Danchi, W. C., additional, Delbo, M., additional, Delplancke, F., additional, Dominik, C., additional, Dugué, M., additional, Elswijk, E., additional, Fanteï, Y., additional, Finger, G., additional, Gabasch, A., additional, Girard, P., additional, Girault, V., additional, Gitton, P., additional, Glazenborg, A., additional, Gonté, F., additional, Guitton, F., additional, Guniat, S., additional, De Haan, M., additional, Haguenauer, P., additional, Hanenburg, H., additional, Heininger, M., additional, Hofmann, K.-H., additional, Hogerheijde, M., additional, ter Horst, R., additional, Hron, J., additional, Hughes, Y., additional, Ives, D., additional, Jakob, G., additional, Jaskó, A., additional, Jolley, P., additional, Kragt, J., additional, Köhler, R., additional, Kroener, T., additional, Kroes, G., additional, Labadie, L., additional, Laun, W., additional, Lehmitz, M., additional, Leinert, Ch., additional, Lizon, J. L., additional, Lucuix, Ch., additional, Marcotto, A., additional, Martinache, F., additional, Matter, A., additional, Martinot-Lagarde, G., additional, Mauclert, N., additional, Mehrgan, L., additional, Meilland, A., additional, Mellein, M., additional, Ménardi, S., additional, Menut, J. L., additional, Meisenheimer, K., additional, Morel, S., additional, Mosoni, L., additional, Navarro, R., additional, Neumann, U., additional, Nussbaum, E., additional, Ottogalli, S., additional, Palsa, R., additional, Panduro, J., additional, Pantin, E., additional, Percheron, I., additional, Duc, T. Phan, additional, Pott, J.-U., additional, Pozna, Eszter, additional, Przygodda, F., additional, Richichi, A., additional, Rigal, F., additional, Rupprecht, G., additional, Schertl, D., additional, Stegmeier, J., additional, Thiam, L., additional, Tromp, N., additional, Vannier, M., additional, Vakili, F., additional, van Belle, G., additional, Wagner, K., additional, and Woillez, J., additional
Published: 2014
Full Text: View/download PDF

33. Perspective of imaging in the mid-infrared at the Very Large Telescope Interferometer

Author: Lopez, B., primary, Lagarde, S., additional, Antonelli, P., additional, Jaffe, W., additional, Petrov, R., additional, Venema, L., additional, Robbe-Dubois, Sylvie, additional, Bettonvil, F., additional, Berio, P., additional, Navarro, R., additional, Graser, U., additional, Beckman, U., additional, Weigelt, G., additional, Vakili, F., additional, Henning, T., additional, Gonzales, J.-C., additional, Wolf, S., additional, Bailet, C., additional, Behrend, J., additional, Bresson, Y., additional, Chesneau, O., additional, Clausse, J. M., additional, Connot, C., additional, Dugué, M., additional, Fantei, Y., additional, Elswijk, E., additional, Hanenburg, H., additional, Hofmann, K. H., additional, Heininger, M., additional, ter Horst, R., additional, Hron, J., additional, Kragt, J., additional, Tromp, N., additional, Agocs, T., additional, Kroes, G., additional, Laun, W., additional, Leinert, Ch., additional, Lehmitz, M., additional, Matter, A., additional, Menut, J. L., additional, Millour, F., additional, Neumann, U., additional, Nussbaum, E., additional, Ottogalli, S., additional, Pott, J.-U., additional, Rigal, F., additional, Roussel, A., additional, Schertl, D., additional, Vannier, M., additional, Wagner, K., additional, Mellein, M., additional, Kroener, T., additional, Mauclert, N., additional, Girard, P., additional, Lagarde, G. M., additional, Mosoni, L., additional, Jasko, A., additional, Glindemann, A., additional, Phan Duc, T., additional, Finger, G., additional, Ives, D., additional, Jakob, G., additional, Percheron, I., additional, Avila, G., additional, Palsa, R., additional, Pozna, E., additional, Lizon, J. L., additional, Lucuix, Ch., additional, Menardi, S., additional, Haguenauer, P., additional, Gitton, P., additional, Morel, S., additional, Gonté, F., additional, Jolley, P., additional, Rupprecht, G., additional, Bourget, P., additional, Delplancke, F., additional, Mehrgan, L., additional, Stegmeier, J., additional, van Belle, G., additional, Richichi, A., additional, and Moorwood, A., additional
Published: 2012
Full Text: View/download PDF

34. Status report on the Large Binocular Telescope's ARGOS ground-layer AO system

Author: Hart, M., primary, Rabien, S., additional, Busoni, L., additional, Barl, L., additional, Beckmann, U., additional, Bonaglia, M., additional, Boose, Y., additional, Borelli, J. L., additional, Bluemchen, T., additional, Carbonaro, L., additional, Connot, C., additional, Deysenroth, M., additional, Davies, R., additional, Durney, O., additional, Elberich, M., additional, Ertl, T., additional, Esposito, S., additional, Gaessler, W., additional, Gasho, V., additional, Gemperlein, H., additional, Hubbard, P., additional, Kanneganti, S., additional, Kulas, M., additional, Newman, K., additional, Noenickx, J., additional, Orban de Xivry, G., additional, Peter, D., additional, Quirrenbach, A., additional, Rademacher, M., additional, Schwab, C., additional, Storm, J., additional, Vaitheeswaran, V., additional, Weigelt, G., additional, and Ziegleder, J., additional
Published: 2011
Full Text: View/download PDF

35. MATISSE: perspective of imaging in the mid-infrared at the VLTI

Author: Lopez, B., primary, Antonelli, P., additional, Wolf, S., additional, Lagarde, S., additional, Jaffe, W., additional, Navarro, R., additional, Graser, U., additional, Petrov, R., additional, Weigelt, G., additional, Bresson, Y., additional, Hofmann, K. H., additional, Beckman, U., additional, Henning, T., additional, Laun, W., additional, Leinert, Ch., additional, Kraus, S., additional, Robbe-Dubois, S., additional, Vakili, F., additional, Richichi, A., additional, Abraham, P., additional, Augereau, J.-C., additional, Behrend, J., additional, Berio, Ph., additional, Berruyer, N., additional, Chesneau, O., additional, Clausse, J. M., additional, Connot, C., additional, Demyk, K., additional, Danchi, W. C., additional, Dugué, M., additional, Finger, G., additional, Flament, S., additional, Glazenborg, A., additional, Hannenburg, H., additional, Heininger, M., additional, Hugues, Y., additional, Hron, J., additional, Jankov, S., additional, Kerschbaum, F., additional, Kroes, G., additional, Linz, H., additional, Lizon, J.-L., additional, Mathias, Ph., additional, Mathar, R., additional, Matter, A., additional, Menut, J. L., additional, Meisenheimer, K., additional, Millour, F., additional, Nardetto, N., additional, Neumann, U., additional, Nussbaum, E., additional, Niedzielski, A., additional, Mosoni, L., additional, Olofsson, J., additional, Rabbia, Y., additional, Ratzka, T., additional, Rigal, F., additional, Roussel, A., additional, Schertl, D., additional, Schmider, F.-X., additional, Stecklum, B., additional, Thiebaut, E., additional, Vannier, M., additional, Valat, B., additional, Wagner, K., additional, and Waters, L. B. F. M., additional
Published: 2008
Full Text: View/download PDF

36. Interferometric data reduction with AMBER/VLTI. Principle, estimators, and illustration

Author: Tatulli, E., primary, Millour, F., additional, Chelli, A., additional, Duvert, G., additional, Acke, B., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kraus, S., additional, Malbet, F., additional, Mège, P., additional, Petrov, R. G., additional, Vannier, M., additional, Zins, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Dugué, M., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Weigelt, G., additional, Accardo, M., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Kamm, D., additional, Kiekebusch, M., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, and Ventura, N., additional
Published: 2007
Full Text: View/download PDF

37. Optical configuration and analysis of the AMBER/VLTI instrument

Author: Robbe-Dubois, S., primary, Lagarde, S., additional, Petrov, R. G., additional, Lisi, F., additional, Beckmann, U., additional, Antonelli, P., additional, Bresson, Y., additional, Martinot-Lagarde, G., additional, Roussel, A., additional, Salinari, P., additional, Vannier, M., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Le Coarer, E., additional, Malbet, F., additional, Millour, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Tatulli, E., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delage, L., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, and Ventura, N., additional
Published: 2007
Full Text: View/download PDF

38. Disk and wind interaction in the young stellar object MWC 297 spatially resolved with AMBER/VLTI

Author: Malbet, F., primary, Benisty, M., additional, de Wit, W.-J., additional, Kraus, S., additional, Meilland, A., additional, Millour, F., additional, Tatulli, E., additional, Berger, J.-P., additional, Chesneau, O., additional, Hofmann, K.-H., additional, Isella, A., additional, Natta, A., additional, Petrov, R. G., additional, Preibisch, T., additional, Stee, P., additional, Testi, L., additional, Weigelt, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Kamm, D., additional, Kiekebusch, M., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional
Published: 2007
Full Text: View/download PDF

39. AMBER, the near-infrared spectro-interferometric three-telescope VLTI instrument

Author: Petrov, R. G., primary, Malbet, F., additional, Weigelt, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Millour, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Salinari, P., additional, Tatulli, E., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional
Published: 2007
Full Text: View/download PDF

40. An asymmetry detected in the disk of κ Canis Majoris with AMBER/VLTI

Author: Meilland, A., primary, Millour, F., additional, Stee, P., additional, Domiciano de Souza, A., additional, Petrov, R. G., additional, Mourard, D., additional, Jankov, S., additional, Robbe-Dubois, S., additional, Spang, A., additional, Aristidi, E., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Malbet, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Roussel, A., additional, Tatulli, E., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional
Published: 2006
Full Text: View/download PDF

41. Direct constraint on the distance of γ2 Velorum from AMBER/VLTI observations

Author: Millour, F., primary, Petrov, R. G., additional, Chesneau, O., additional, Bonneau, D., additional, Dessart, L., additional, Bechet, C., additional, Tallon-Bosc, I., additional, Tallon, M., additional, Thiébaut, E., additional, Vakili, F., additional, Malbet, F., additional, Mourard, D., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Tatulli, E., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tasso, D., additional, Testi, L., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional
Published: 2006
Full Text: View/download PDF

42. Near-infrared interferometry of η Carinae with spectral resolutions of 1 500 and 12 000 using AMBER/VLTI

Author: Weigelt, G., primary, Kraus, S., additional, Driebe, T., additional, Petrov, R. G., additional, Hofmann, K.-H., additional, Millour, F., additional, Chesneau, O., additional, Schertl, D., additional, Malbet, F., additional, Hillier, D. J., additional, Gull, T., additional, Davidson, K., additional, Domiciano de Souza, A., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Chelli, A., additional, Dugué, M., additional, Duvert, G., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Tatulli, E., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Kamm, D., additional, Kiekebusch, M., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Marconi, A., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stee, P., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Testi, L., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, Ventura, N., additional, Weis, K., additional, and Wittkowski, M., additional
Published: 2006
Full Text: View/download PDF

43. Constraining the wind launching region in Herbig Ae stars: AMBER/VLTI spectroscopy of HD 104237

Author: Tatulli, E., primary, Isella, A., additional, Natta, A., additional, Testi, L., additional, Marconi, A., additional, Malbet, F., additional, Stee, P., additional, Petrov, R. G., additional, Millour, F., additional, Chelli, A., additional, Duvert, G., additional, Antonelli, P., additional, Beckmann, U., additional, Bresson, Y., additional, Dugué, M., additional, Gennari, S., additional, Glück, L., additional, Kern, P., additional, Lagarde, S., additional, Le Coarer, E., additional, Lisi, F., additional, Perraut, K., additional, Puget, P., additional, Rantakyrö, F., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Weigelt, G., additional, Zins, G., additional, Accardo, M., additional, Acke, B., additional, Agabi, K., additional, Altariba, E., additional, Arezki, B., additional, Aristidi, E., additional, Baffa, C., additional, Behrend, J., additional, Blöcker, T., additional, Bonhomme, S., additional, Busoni, S., additional, Cassaing, F., additional, Clausse, J.-M., additional, Colin, J., additional, Connot, C., additional, Delboulbé, A., additional, Domiciano de Souza, A., additional, Driebe, T., additional, Feautrier, P., additional, Ferruzzi, D., additional, Forveille, T., additional, Fossat, E., additional, Foy, R., additional, Fraix-Burnet, D., additional, Gallardo, A., additional, Giani, E., additional, Gil, C., additional, Glentzlin, A., additional, Heiden, M., additional, Heininger, M., additional, Hernandez Utrera, O., additional, Hofmann, K.-H., additional, Kamm, D., additional, Kiekebusch, M., additional, Kraus, S., additional, Le Contel, D., additional, Le Contel, J.-M., additional, Lesourd, T., additional, Lopez, B., additional, Lopez, M., additional, Magnard, Y., additional, Mars, G., additional, Martinot-Lagarde, G., additional, Mathias, P., additional, Mège, P., additional, Monin, J.-L., additional, Mouillet, D., additional, Mourard, D., additional, Nussbaum, E., additional, Ohnaka, K., additional, Pacheco, J., additional, Perrier, C., additional, Rabbia, Y., additional, Rebattu, S., additional, Reynaud, F., additional, Richichi, A., additional, Robini, A., additional, Sacchettini, M., additional, Schertl, D., additional, Schöller, M., additional, Solscheid, W., additional, Spang, A., additional, Stefanini, P., additional, Tallon, M., additional, Tallon-Bosc, I., additional, Tasso, D., additional, Vakili, F., additional, von der Lühe, O., additional, Valtier, J.-C., additional, Vannier, M., additional, and Ventura, N., additional
Published: 2006
Full Text: View/download PDF

44. MATISSE: a four beams combiner in the mid-infrared for the VLTI

Author: Lagarde, S., primary, Lopez, B., additional, Antonelli, P., additional, Beckman, U., additional, Behrend, J., additional, Bresson, Y., additional, Chesneau, O., additional, Dugué, M., additional, Glazenborg, A., additional, Graser, U., additional, Hofmann, K. H., additional, Jaffe, W., additional, Leinert, Ch., additional, Millour, F., additional, Menut, J. L., additional, Petrov, R. G., additional, Ratzka, T., additional, Weigelt, G., additional, Wolf, S., additional, Abraham, P., additional, Connot, C., additional, Henning, T., additional, Heininger, M., additional, Hugues, Y., additional, Kraus, S., additional, Laun, W., additional, Matter, A., additional, Neumann, U., additional, Nussbaum, E., additional, Niedzielski, A., additional, Mosoni, L., additional, Robbe-Dubois, S., additional, Roussel, A., additional, Schertl, D., additional, Vakili, F., additional, Wagner, K., additional, and Waters, L.B.F.M., additional
Published: 2006
Full Text: View/download PDF

45. APerture Synthesis in the MID-Infrared with the VLTI.

Author: Leibundgut, Bruno, Richichi, A., Delplancke, F., Paresce, F., Chelli, A., Lopez, B., Wolf, S., Duguée, M., Graser, U., Mathias, Ph., Antonelli, P., Augereau, J.-C., Behrend, J., Berruyer, N., Bresson, Y., Chesneau, O., Connot, C., Demyk, K., DiFolco, E., and Dutrey, A.
Abstract: Our objective is to develop of the mid-infrared imaging for the VLTI. Several areas of astrophysics will benefit of this new capability. APreS-MIDI comprises a beam combiner which interfaces with the current MIDI instrument. It thus constitutes an extension to the two-beam interferometric instrument MIDI by increasing the number of recombined beams up to four. This extension provides better uv-coverage (6 visibility points measured in one set) and moreover will allow measurement of 4 closure phase relations thus providing for the first time aperture synthesis images in the mid-infrared spectral regime. The mid-infrared spectral domain is very relevant for the study of the environments of various astrophysical sources. The science cases are broad. There are illustrated in the first part of this article by the perspective of imaging the circumstellar discs of young stellar objects. The APreS-MIDI instrument is described in a second part of this article. [ABSTRACT FROM AUTHOR]
Published: 2008
Full Text: View/download PDF

46. Direct constraint on the distance of γ2Velorum from AMBER/VLTI observations*

Author: Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., Tallon-Bosc, I., Tallon, M., Thiébaut, E., Vakili, F., Malbet, F., Mourard, D., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tasso, D., Testi, L., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Millour, F., Petrov, R. G., Chesneau, O., Bonneau, D., Dessart, L., Bechet, C., Tallon-Bosc, I., Tallon, M., Thiébaut, E., Vakili, F., Malbet, F., Mourard, D., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tasso, D., Testi, L., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.
Abstract: Context.Interferometry can provide spatially resolvedobservations of massive star binary systems and their colliding winds, which thus far have been studied mostly with spatially unresolvedobservations.
Published: 2007
Full Text: View/download PDF

47. Constraining the wind launching region in Herbig Ae stars: AMBER/VLTI spectroscopy of HD 104237 *

Author: Tatulli, E., Isella, A., Natta, A., Testi, L., Marconi, A., Malbet, F., Stee, P., Petrov, R. G., Millour, F., Chelli, A., Duvert, G., Antonelli, P., Beckmann, U., Bresson, Y., Dugué, M., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Tatulli, E., Isella, A., Natta, A., Testi, L., Marconi, A., Malbet, F., Stee, P., Petrov, R. G., Millour, F., Chelli, A., Duvert, G., Antonelli, P., Beckmann, U., Bresson, Y., Dugué, M., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.
Abstract: Aims.We investigate the origin of the ${\rm Br}\gamma$emission of the Herbig Ae star HD 104237 on Astronomical Unit (AU) scales.
Published: 2007
Full Text: View/download PDF

48. Disk and wind interaction in the young stellar object MWC 297spatially resolved with AMBER/VLTI *

Author: Malbet, F., Benisty, M., de Wit, W.-J., Kraus, S., Meilland, A., Millour, F., Tatulli, E., Berger, J.-P., Chesneau, O., Hofmann, K.-H., Isella, A., Natta, A., Petrov, R. G., Preibisch, T., Stee, P., Testi, L., Weigelt, G., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Malbet, F., Benisty, M., de Wit, W.-J., Kraus, S., Meilland, A., Millour, F., Tatulli, E., Berger, J.-P., Chesneau, O., Hofmann, K.-H., Isella, A., Natta, A., Petrov, R. G., Preibisch, T., Stee, P., Testi, L., Weigelt, G., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Domiciano de Souza, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Spang, A., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.
Abstract: The young stellar object MWC 297is an embedded B1.5Ve star exhibiting strong hydrogen emission lines and a strong near-infrared continuum excess. This object has been observed with the VLT interferometer equipped with the AMBER instrument during its first commissioning run. AMBER/VLTI is currently the only near infrared interferometer that can observe spectrally dispersed visibilities. MWC 297has been spatially resolved in the continuum with a visibility of $0.50^{+0.08}_{-0.10}$as well as in the Brγemission line where the visibility decreases to $0.33\pm0.06$. This change in the visibility with wavelength can be interpreted by the presence of an optically thick disk responsible for the visibility in the continuum and of a stellar wind traced by the Brγemission line and whose apparent size is 40% larger. We validate this interpretation by building a model of the stellar environment that combines a geometrically thin, optically thick accretion disk model consisting of gas and dust, and a latitude-dependent stellar wind outflowing above the disk surface. The continuum emission and visibilities obtained from this model are fully consistent with the interferometric AMBER data. They agree also with existing optical, near-infrared spectra and other broad-band near-infrared interferometric visibilities. We also reproduce the shape of the visibilities in the Brγline as well as the profile of this line obtained at an higher spectral resolution with the VLT/ISAAC spectrograph, and those of the Hαand Hβlines. The disk and wind models yield a consistent inclination of the system of approximately 20°. A picture emerges in which MWC 297is surrounded by an equatorial flat disk that is possibly still accreting and an outflowing wind that has a much higher velocity in the polar region than at the equator. The AMBER/VLTI unique capability of measuring spectral visibilities therefore allows us for the first time to compare the apparent geometry of a wind with the disk structure in a young stellar system.
Published: 2007
Full Text: View/download PDF

49. Near-infrared interferometry of ηCarinaewith spectral resolutions of 1 500 and 12 000 using AMBER/VLTI*

Author: Weigelt, G., Kraus, S., Driebe, T., Petrov, R. G., Hofmann, K.-H., Millour, F., Chesneau, O., Schertl, D., Malbet, F., Hillier, D. J., Gull, T., Davidson, K., Domiciano de Souza, A., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Weis, K., Wittkowski, M., Weigelt, G., Kraus, S., Driebe, T., Petrov, R. G., Hofmann, K.-H., Millour, F., Chesneau, O., Schertl, D., Malbet, F., Hillier, D. J., Gull, T., Davidson, K., Domiciano de Souza, A., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Perraut, K., Puget, P., Rantakyrö, F., Robbe-Dubois, S., Roussel, A., Tatulli, E., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Aristidi, E., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Kamm, D., Kiekebusch, M., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Mourard, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schöller, M., Solscheid, W., Spang, A., Stee, P., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Weis, K., and Wittkowski, M.
Abstract: Aims.We present the first NIR spectro-interferometryof the LBV ηCarinae. The observations were performed with the AMBER instrument of the ESO Very Large Telescope Interferometer(VLTI) using baselines from 42 to 89 m. The aim of this work is to study the wavelength dependence of ηCar's optically thick wind region with a high spatial resolution of 5 mas (11 AU) and high spectral resolution.
Published: 2007
Full Text: View/download PDF

50. An asymmetry detected in the disk of κCanis Majoriswith AMBER/VLTI *

Author: Meilland, A., Millour, F., Stee, P., Domiciano de Souza, A., Petrov, R. G., Mourard, D., Jankov, S., Robbe-Dubois, S., Spang, A., Aristidi, E., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Malbet, F., Perraut, K., Puget, P., Rantakyrö, F., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., Ventura, N., Meilland, A., Millour, F., Stee, P., Domiciano de Souza, A., Petrov, R. G., Mourard, D., Jankov, S., Robbe-Dubois, S., Spang, A., Aristidi, E., Antonelli, P., Beckmann, U., Bresson, Y., Chelli, A., Dugué, M., Duvert, G., Gennari, S., Glück, L., Kern, P., Lagarde, S., Le Coarer, E., Lisi, F., Malbet, F., Perraut, K., Puget, P., Rantakyrö, F., Roussel, A., Tatulli, E., Weigelt, G., Zins, G., Accardo, M., Acke, B., Agabi, K., Altariba, E., Arezki, B., Baffa, C., Behrend, J., Blöcker, T., Bonhomme, S., Busoni, S., Cassaing, F., Clausse, J.-M., Colin, J., Connot, C., Delboulbé, A., Driebe, T., Feautrier, P., Ferruzzi, D., Forveille, T., Fossat, E., Foy, R., Fraix-Burnet, D., Gallardo, A., Giani, E., Gil, C., Glentzlin, A., Heiden, M., Heininger, M., Hernandez Utrera, O., Hofmann, K.-H., Kamm, D., Kiekebusch, M., Kraus, S., Le Contel, D., Le Contel, J.-M., Lesourd, T., Lopez, B., Lopez, M., Magnard, Y., Marconi, A., Mars, G., Martinot-Lagarde, G., Mathias, P., Mège, P., Monin, J.-L., Mouillet, D., Nussbaum, E., Ohnaka, K., Pacheco, J., Perrier, C., Rabbia, Y., Rebattu, S., Reynaud, F., Richichi, A., Robini, A., Sacchettini, M., Schertl, D., Schöller, M., Solscheid, W., Stefanini, P., Tallon, M., Tallon-Bosc, I., Tasso, D., Testi, L., Vakili, F., von der Lühe, O., Valtier, J.-C., Vannier, M., and Ventura, N.
Abstract: Aims.We study the geometry and kinematics of the circumstellar environment of the Be star κCMa in the Brγemission line and its nearby continuum.
Published: 2007
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

83 results on '"Connot, C."'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources