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563 results on '"Catala, C."'

152. Space observations of B stars with CoRoT

Author

Degroote, P., Miglio, A., Debosscher, J., Montalbxe1n, J., Cuypers, J., Briquet, M., De Cat, P., Thoul, A., Morel, T., Niemczura, E., Balaguer-Nxfaxf1ez, L., Maceroni, C., Ribas, I., Noels, A., Aerts, C., Auvergne, M., Baglin, A., Catala, C., Deleuil, M., Michel, E., Ollivier, M., Jorda, L., Samadi, R., Degroote, Miglio, Debosscher, Montalbxe1n, Cuypers, Briquet, De Cat, Thoul, Morel, Niemczura, Balaguer-Nxfaxf1ez, Maceroni, Ribas, Noels, Aerts, Auvergne, Baglin, Catala, Deleuil, Michel, Ollivier, Jorda, and Samadi

Published
2009

153. Session1A: DATA − Ground-based observations. Veröffentlichungen der Kommission für Astronomie|Communications in Asteroseismology|Communications in Asteroseismology 157 157

Author

Udalski, A., Pamyatnykh, A.A., Aerts, C., Catala, C., Carrier, F., Soszynski, I., Kolenberg, K., Breger, M., Briquet, M., Szymanski, M.K., Lenz, P., Kepler, S. O., Dreizler, S., Schuh, S., Tsantilas, S., Böhm, T., Heber, U., Dimitrov, W., and Zima, W.

Subjects
Mathematics, Physics and Space Research
Published
2009

154. Blue Dots Team Transits Working Group Review

Author

Alessandro Sozzetti, Afonso, C., Alonso, R., Blank, D. L., Catala, C., Deeg, H., Grenfell, J. L., Hellier, C., Latham, D. W., Minniti, D., Pont, F., and Rauer, H.

Subjects
Earth and Planetary Astrophysics (astro-ph.EP), Extrasolare Planeten, Astrophysics::Solar and Stellar Astrophysics, FOS: Physical sciences, Transit, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

Transiting planet systems offer an unique opportunity to observationally constrain proposed models of the interiors (radius, composition) and atmospheres (chemistry, dynamics) of extrasolar planets. The spectacular successes of ground-based transit surveys (more than 60 transiting systems known to-date) and the host of multi-wavelength, spectro-photometric follow-up studies, carried out in particular by HST and Spitzer, have paved the way to the next generation of transit search projects, which are currently ongoing (CoRoT, Kepler), or planned. The possibility of detecting and characterizing transiting Earth-sized planets in the habitable zone of their parent stars appears tantalizingly close. In this contribution we briefly review the power of the transit technique for characterization of extrasolar planets, summarize the state of the art of both ground-based and space-borne transit search programs, and illustrate how the science of planetary transits fits within the Blue Dots perspective., Comment: 9 pages, 3 figures, to be published in the proceedings (ASP Conf. Ser.) of the "Pathways Towards Habitable Planets" conference, held in Barcelona (14-18 Sep 2009)

Published
2009
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155. Asteroseismic analysis of the CoRoT ��-Scuti star HD174936

Author

Hern��ndez, A. Garc��a, Moya, A., Michel, E., Garrido, R., Su��rez, J. C., Rodr��guez, E., Amado, P. J., Mart��n-Ru��z, S., Rolland, A., Poretti, E., Samadi, R., Baglin, A., Auvergne, M., Catala, C., Lefevre, L., and Baudin, F.

Subjects
Astrophysics::Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics::Earth and Planetary Astrophysics, Solar and Stellar Astrophysics (astro-ph.SR)
Abstract

We present an analysis of the ��-Scuti star object HD 174936 (ID 7613) observed by CoRoT during the first short run SRc01 (27 days). A total number of 422 frequencies we are extracted from the light curve using standard prewhitening techniques. This number of frequencies was obtained by considering a spectral significance limit of sig = 10 using the software package SigSpec. Our analysis of the oscillation frequency spectrum reveals a spacing periodicity of around 52 \muHz. Although modes considered here are not in the asymptotic regime, a comparison with stellar models confirms that this signature may stem from a quasi-periodic pattern similar to the so-called large separation in solar-like stars., 7 pages, 7 figures, 2 tables. Accepted for publication in A&A CoRoT Special Feature

Published
2009
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156. Rate and nature of false positives in the CoRoT exoplanet search

Author

Almenara, J, Deeg, H, Aigrain, S, Alonso, R, Auvergne, M, Baglin, A, Barbieri, M, Barge, P, Bordé, P, Bouchy, F, Bruntt, H, Cabrera, Juan, Carone, L, Carpano, S, Catala, C, Csizmadia, Szilard, de la Reza, R, Deleuil, M, Dvorak, R, Erikson, Anders, Fridlund, M, Gandolfi, D, Gillon, M, Gondoin, P, Günther, E, Guillot, T, Hatzes, A, Hébrard, G, Jorda, L, Lammer, H, Léger, A, Llebaria, A, Loiellet, B, Magain, P, Mayor, M, Mazeh, T, Moutou, C, Ofir, A, Ollivier, M, Pätzold, M, Pont, F, Queloz, D, Rauer, Heike, Régulo, C, Renner, Stefan, Rouan, D, Samuel, B, Schneider, J, Shporer, A, Wuchterl, G, Zucker, S, Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE), 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, 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
photometry, FOS: Physical sciences, Context (language use), Astrophysics, 01 natural sciences, Planet, 0103 physical sciences, False positive paradox, false positives, Transit (astronomy), 010303 astronomy & astrophysics, Solar and Stellar Astrophysics (astro-ph.SR), Earth and Planetary Astrophysics (astro-ph.EP), Physics, 010308 nuclear & particles physics, Astronomy and Astrophysics, Galactic plane, Exoplanet, CoRoT, Stars, planetary candidates, exoplanets, Astrophysics - Solar and Stellar Astrophysics, Space and Planetary Science, transit method, False positive rate, Astrophysics::Earth and Planetary Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

Context. The CoRoT satellite searches for planets by applying the transit method, monitoring up to 12 000 stars in the galactic plane for 150 days in each observation run. This search is contaminated by a large fraction of false positives, caused by different binary configurations that might be confused with a transiting planet. Aims. We evaluate the rates and nature of false positives in the CoRoT exoplanets search and compare our results with semiempirical predictions. Methods. We consider the detected binary and planet candidates in the first three extended CoRoT runs, and classify the results of the follow-up observations completed to verify their planetary nature. We group the follow-up results into undiluted binaries, diluted binaries, and planets and compare their abundances with predictions from the literature. Results. 83% of the initial detections are classified as false positives using only the CoRoT light-curves, the remaining 17% require follow-up observations. Finally, 12% of the follow-up candidates are planets. The shape of the overall distribution of the false positive rate follows previous predictions, except for candidates with transit depths below about 0.4%. For candidates with transit depths in the range from 0.1 - 0.4%, CoRoT detections are nearly complete, and this difference from predictions is probably real and dominated by a lower than expected abundance of diluted eclipsing binaries., accepted for A&A special issue on CoRoT

Published
2009

157. The B0.5IVe CoRoT target HD 49 330. II. Spectroscopic ground-based observations

Author

Floquet, M., Hubert, A.M., Huat, A.L., Frémat, Y., Janot-Pacheco, E., Gutiérrez Soto, Juan, Neiner, C., De Batz, B., Leroy, B., Poretti, E., Amado, P., Catala, C., Rainer, M., Díaz, D., Uytterhoeven, K., Andrade, L., Diago Nebot, Pascual David, M. Emilio, Espinosa-Lara, F., Fabregat Llueca, Juan, Martayan, C., Semaan, T., and Suso, J.

Subjects
Astronomia, Ciència Ensenyament
Abstract

Context. We present spectroscopic ground-based observations of the early Be star HD 49330 obtained simultaneously with the CoRoT-LRA1 run just before the burst observed in the CoRoT data. Aims. Ground-based spectroscopic observations of the early Be star HD 49330 obtained during the precursor phase and just before the start of an outburst allow us to disantangle stellar and circumstellar contributions and identify modes of stellar pulsations in this rapidly rotating star. Methods. Time series analysis (TSA) is performed on photospheric line profiles of He i and Si iii by means of the least squares method. Results. We find two main frequencies f1 = 11.86 c d^−1 and f2 = 16.89 c d^−1 which can be associated with high order p-mode pulsations. We also detect a frequency f3 = 1.51 c d^−1 which can be associated with a low order g-mode. Moreover we show that the stellar line profile variability changed over the spectroscopic run. These results are in agreement with the results of the CoRoT data analysis, as shown in Huat et al. (2009). Conclusions. Our study of mid- and short-term spect roscopic variability allows the identification of p- and g- modes in HD 49330. It also allows us to display changes in the line profile variability before the start of an outburst. This brings new constraints for the seimic modelling of this star.

Published
2009

158. The pulsations of the B5IVe star HD 181 231 observed with CoRoT and ground-based spectroscopy

Author

Neiner, C., Gutiérrez Soto, Juan, Baudin, F., De Batz, B., Frémat, Y., Huat, A.L., Floquet, M., Hubert, A.M., Leroy, B., Diago Nebot, Pascual David, Poretti, E., Carrier, F., Rainer, M., Catala, C., Thizy, O., Buil, C., Ribeiro, J., Andrade, L., Emilio, M., Espinosa-Lara, F., Fabregat Llueca, Juan, Janot-Pacheco, E., Martayan, C., Semaan, T., Suso, J., Baglin, A., Michel, E., and Samadi, R.

Subjects
Astronomia, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Ciència Ensenyament
Abstract

Context. HD 181231 is a B5IVe star, which has been observed with the CoRoT satellite during ∼5 consecutive months and simultaneously from the ground in spectroscopy and spectropolarimetry. Aims. By analysing these data, we aim to detect and characterize as many pulsation frequencies as possible, to search for the presence of beating effects possibly at the origin of the Be phenomenon. Our results will also pr ovide a basis for seismic modelling. Methods. The fundamental parameters of the star are determined from spectral fitting and from the study of the circumstellar emission. The CoRoT photometric data and ground-based spectroscopy are analysed using several Fourier Techniques: CLEAN-NG,PASPER,and TISAFT, as well as a time-frequency technique. A search for a magnetic field is performed by applying the LSD technique to the spectropolarimetric data. Results. We find that HD 181231 is a B5IVe star seen with an inclination of ∼45 degrees. No magnetic field is detected in its photo-sphere. We detect at least 10 independent significant frequencies of variations among the 54 detected frequencies, interpreted in termsof non-radial pulsation modes and rotation. Two longer-term variations are also detected: one at ∼14 days resulting from a beating effect between the two main frequencies of short-term variations, the other at ∼116 days due either to a beating of frequencies or to a zonal pulsation mode. Conclusions. Our analysis of the CoRoT light curve and ground-based spectroscopic data of HD 181231 has led to the determination of the fundamental and pulsational parameters of the star, including beating effects. This will allow a precise seismic modelling of this star.

Published
2009

160. Low-amplitude variations detected by CoRoT in the B8IIIe star HD 175 869

Author

Gutiérrez Soto, Juan, Floquet, M., Samadi, R., Neiner, C., Garrido, R., Fabregat Llueca, Juan, Frémat, Y., Diago Nebot, Pascual David, Huat, A. L., Leroy, B., Emilio, M., Hubert, A.M., Thizy, O., Andrade, L., De Batz, B., Janot-Pacheco, E., Espinosa-Lara, F., Martayan, C., Suso, J., Auvergne, M., Chaintreuil, S., Michel, E., and Catala, C.

Subjects
Esteroides, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics
Abstract

Context.The origin of the short-term variability in Be stars remains a matter of controversy. Pulsations and rotational modulation are the components of the favored hypothesis.Aims.We present our analysis of CoRoT data of the B8IIIe star HD 175869 observed during the first short run in the center direction (SRC1).Methods.We review both the instrumental effects visible in the CoRoT light curve and the analysis methods used by the CoRoT Be team. We applied these methods to the CoRoT light curve of the star HD 175869. A search for line-profile variations in the spectroscopic data was also performed. We also searched for a magnetic field, by applying the LSD technique to spectropolarimetric data.Results.The light curve exhibits low-amplitude variations of the order of 300 μ mag with a double wave shape. A frequency within the range determined for the rotational frequency and 6 of its harmonics are detected. The main frequency and its first harmonic exhibit amplitude variations of a few days. Other significant frequencies of low-amplitude from 25 to a few μmag are also found. The analysis of line profiles from ground-based spectrosc opic data does not detect an y variation. In addition, no Zeeman signature was found.Conclusions.Inhomogeneities caused by stellar activity in or just above the photosphere are proposed to produce the photometric variability detected by CoRoT in the Be star HD 175869. The hypothesis that non-radial pulsations are the origin of these variations cannot be excluded.

Published
2009

162. How non-magnetic are 'non-magnetic' Herbig Ae/Be stars?

Author

Wade, G. A., Alecian, E., Catala, C., Bagnulo, S., John Landstreet, Flood, J., Böhm, T., Bouret, J. -C, Donati, J. -F, Folsom, C. P., Grunhut, J., Silvester, J., Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics (astro-ph), stars: magnetic fields, FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, stars: pre-main sequence, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

Our recent discovery of magnetic fields in a small number of Herbig Ae/Be stars has required that we survey a much larger sample of stars. From our FORS1 and ESPaDOnS surveys, we have acquired about 125 observations of some 70 stars in which no magnetic fields are detected. Using a Monte Carlo approach, we have performed statistical comparisons of the observed longitudinal fields and LSD Stokes V profiles of these apparently non-magnetic stars with a variety of field models. This has allowed us to derive general upper limits on the presence of dipolar fields in the sample, and to place realistic upper limits on undetected dipole fields which may be present in individual stars. This paper briefly reports the results of the statistical modeling, as well as field upper limits for individual stars of particular interest., Comment: 6 pages, 2 figures. In the proceedings of the "CP/Ap workshop" held in Vienna, September 2007

Published
2008

163. Characterization of the magnetic field of the Herbig Be star HD200775

Author

Alecian, E., Catala, C., Wade, G. A., Donati, J. -F., Petit, P., Landstreet, J. D., Bagnulo, S., Boehm, T., Bouret, J. -C., Folsom, C., Grunhut, J., Silvester, J., University of Western Ontario (UWO), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Centre National de la Recherche Scientifique (CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), and Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS)

Subjects
[SDU.ASTR.HE]Sciences of the Universe [physics]/Astrophysics [astro-ph]/High Energy Astrophysical Phenomena [astro-ph.HE], Astrophysics (astro-ph), stars: individual: HD200775, FOS: Physical sciences, instrumentation: polarimeters, stars: pre-main-sequence, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], stars: magnetic fields, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, binaries: spectroscopic
Abstract

After our recent discovery of four magnetic Herbig stars, we have decided to study in detail one of them, HD 200775, to determine if its magnetic topology is similar to that of the main sequence magnetic stars. With this aim, we monitored this star in Stokes I and V over more than two years, using the new spectropolarimeters ESPaDOnS at CFHT, and Narval at TBL. Using our data, we find that HD 200775 is a double-lined spectroscopic binary system, whose secondary seems similar, in temperature, to the primary. We determine the luminosity ratio of the system, and using the luminosity of the system found in literature, we derive the luminosity of both stars. From our measurements of the radial velocities of both stars we determine the ephemeris and the orbital parameters of the system. We have fitted 30 Stokes V profiles simultaneously, using a chi2 minimisation method, with a decentered-dipole model. The best-fit model provides a rotation period of 4.3281 d an inclination angle of 60 degrees, and a magnetic obliquity angle of 125 degrees. The polar strength of the magnetic dipole field is 1000 G, which is decentered by 0.05 R* from the center of the star. The derived magnetic field model is qualitatively identical to those commonly observed in the Ap/Bp stars, which bring strong argument in favour of the fossil field hypothesis, to explain the origin of the magnetic fields in the main sequence Ap/Bp stars. Our determination of the inclination of the rotation axis leads to a radius of the primary which is smaller than that derived from the HR diagram position. This can be explained by a larger intrinsic luminosity of the secondary relative to the primary, due to a larger circumstellar extinction of the secondary relative to the primary., Comment: Accepted for publication in MNRAS, 14 pages, 10 figures

Published
2008

164. Magnetic geometries of Sun-like stars: impact of rotation

Author

Petit, P., Dintrans, B., Aurière, M., Catala, C., Donati, J. -F, Rim Fares, Gastine, T., Lignières, F., Morin, J., Paletou, F., Ramirez, J., Solanki, S. K., and Théado, S.

Subjects
Sun and Heliosphere
Published
2008

165. Synthesis of Biaryls via Decarboxylative Pd-Catalyzed Crooss-Coupling Reaction

Author

Becht, J.M., Catala, C., Le Drian, C., Wagner, A., Institut Gilbert-Laustriat : Biomolécules, Biotechnologie, Innovation Thérapeutique, Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Erhart, Marianne

Subjects
[CHIM.ORGA]Chemical Sciences/Organic chemistry, [CHIM.ORGA] Chemical Sciences/Organic chemistry
Published
2007

168. Magnetic fields in Herbig Ae/Be stars

Author

Wade, G. A., Catala, C., Alecian, E., Folsom, C., Bagnulo, S., Boehm, T., Bouret, J. -C., Donati, J. -F., Drouin, D., Landstreet, J. D., Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris

Subjects
Astrophysics (astro-ph), FOS: Physical sciences, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics::Galaxy Astrophysics
Abstract

Studies of stellar magnetism at the pre-main sequence phase can provide important new insights into the detailed physics of the late stages of star formation, and into the observed properties of main sequence stars. This is especially true at intermediate stellar masses, where magnetic fields are strong and globally organised, and therefore most amenable to direct study. This paper reviews recent high-precision spectropolarimetric observations of pre-main sequence Herbig Ae/Be stars, which are yielding qualitatively new information about intermediate-mass stars: the origin and evolution of their magnetic fields; the role of magnetic fields in generating their spectroscopic activity and in mediating accretion in their late formative stages; the factors influencing their rotational angular momentum; and the development and evolution of chemical peculiarity in their photospheres., 12 pages, 7 figures. Accepted by the proceedings of the 2006 conference "Magnetic Stars" of the Special Astrophysical Observatory of the Russian Academy of Sciences

Published
2006

169. Molecular Hydrogen in the Circumstellar Environment of Herbig Ae/Be Stars

Author

Martin, C., Deleuil, M., C. Bouret, J., Le Bourlot, J., Catala, C., Lecavelier Des Etangs, A., Vidal-Madjar, A., Roberge, A., Feldman, P.D., Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), G. Sonneborn, H. Moos, and B-G Andersson, Beaussier, Catherine, G. Sonneborn, H. Moos, and B-G Andersson, Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

We present our analysis of the molecular hydrogen in the circumstellar environment of a sample of Herbig Ae/Be stars observed with FUSE. The characteristics of H2 around Herbig Ae and Be stars gives evidence of two mechanisms of excitation. This suggests structural differences between Herbig Ae and Be stars' environments which could be explained by a faster evolution of the latter combined with stronger radiation fields.

Published
2006

170. Characterisation of the magnetic fields of the Herbig Be stars HD 200775 and V380 0ri

Author

Evelyne Alecian, Wade, G. A., Catala, C., Bagnulo, S., Bohm, T., C Bouret, J., F Donati, J., Folsom, C. P., Landstreet, J. D., Silvester, J., Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), and Beaussier, Catherine

Subjects
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], [PHYS.ASTR.CO] Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], Astrophysics (astro-ph), Astrophysics::Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics::Earth and Planetary Astrophysics, Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

The origin of the magnetic fields of the chemically peculiar main sequence Ap/Bp stars is still matter of intense debate. The recent discoveries of magnetic fields in Herbig Ae/Be stars using high resolution data obtained with the spectropolarimeter ESPaDOnS at CFHT provide a strong argument in favour of the fossil field hypothesis. Using a simple oblique rotator model of a centered dipole, we fit the Stokes V LSD profiles of two of these magnetic HAeBe stars, HD 200775 and V380 Ori, as well as their variations on timescales from days to months. We find that in both cases the dipole hypothesis is acceptable and we determine the rotation period, the angle between rotation and magnetic axes and the intensity of the magnetic field at pole., Comment: 5 pages, 4 figures. Proceeding of the 2006 conference of the Special Astrophysical Observatory of the Russian Academy of Sciences

Published
2006
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171. GAUDI: A Preparatory Archive for the COROT Mission

Author

Hua, T., Lyashko, D., Buzzoni, A., Janot-Pacheco, E., Rodrigo, C., Mittermayer, P., Tsymbal, V., Mantegazza, L., Aerts, C., Weiss, W., Guenther, E., Amado, P., Garrido, R., Nesvacil, N., Catala, C., Rainer, M., Rolland, A., Lignieres, F., Gutierrez, R., Katz, D., Charpinet, S., Ballereau, D., Fremat, Y., Solano, E., Bossi, M., Costa, V., Poretti, E., Soubiran, C., Butler, C., Antonello, E., Bouret, J., Veer-Menneret, C., Lüftinger, T., Veer-Menneret C., VanT, M. J., Goupil, Gutiérrez, R., Lignières, F., P. J., Amado, J. C., Bouret, González, R., C. J., Butler, Goupil, M., Hatzes, A., Neiner, C., Luftinger, T., Gonzalez, R., Laboratorio de Astrofísica Espacial y Física Fundamental (LAEFF), Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Instituto de Astrofisica de Andalucia, CSIC (IAA), INAF-Osservatorio Astronomico di Brera (INAF-OAB), Instituto Astronômico e Geofísico, Universidade de São Paulo (IAG), XMM-Newton Science Operations Centre, European Space Agency, Research and Scientific Support Department, ESA-ESTEC (RSSD), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Laboratoire Astrophysique de Toulouse-Tarbes (LATT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS), Institut für Astronomie, Universität Wien (IfA), Fizicheskiy Fakul'tet, Tavricheskii Natsional'nyi Universitet, Observatoire Astronomique de Marseille Provence (OAMP), Université de Provence - Aix-Marseille 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), INAF-Osservatorio Astronomico di Bologna (OABO), Instituut voor Sterrenkunde, Katholieke Universiteit Leuven, Armagh Observatory, College Hill, Thüringer Landessternwarte, Tautenburg Observatory, Laboratoire d'Astrophysique de l'Observatoire Midi-Pyrénées (LATT), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP), Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Météo France-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES)

Subjects
Physics, 010308 nuclear & particles physics, Astronomy, Astrophysics (astro-ph), FOS: Physical sciences, Astronomy and Astrophysics, Astrophysics, Database interface, 01 natural sciences, Asteroseismology, [PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO], symbols.namesake, Space and Planetary Science, Observatory, Stars: Fundamental Parameters, 0103 physical sciences, Galileo (satellite navigation), symbols, Catalogs, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], 010303 astronomy & astrophysics
Abstract

The GAUDI database (Ground-based Asteroseismology Uniform Database Interface, http://sdc.laeff.esa.es/gaudi/) is a preparatory archive for the COROT (COnvection, ROtation and planetary Transits, http://www.astrsp-mrs.fr/projets/corot/) mission developed at LAEFF (Laboratory for Space Astrophysics and Theoretical Physics, http://www.laeff.esa.es). Its intention is to make the ground-based observations obtained in the preparation of the asteroseismology programme available in a simple and efficient way. It contains spectroscopic and photometric data together with inferred physical parameters for more than 1500 objects gathered since January 1998 in 6 years of observational campaigns. In this paper, the main functionalities and characteristics of the system are described. The observations have been collected at ESO-La Silla, Telescopio Nazionale Galileo, Observatoire de Haute-Provence, South African Astronomical Observatory, Tautenberg Observatory and Sierra Nevada Observatory., 12 pages, 3 figures (quality degraded). Accepted for publication in The Astronomical Journal

Published
2005

172. CoRoT: a first space mission to find terrestrial planets

Author

Barge, P., Auvergne, M., Buey, J.-T., Catala, C., Michel, E., Weiss, W. W., Deleuil, M., Jorda, L., Moutou, C., Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Casoli, T. Contini, J.M. Hameury and L. Pagani., and Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-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], Physics::Space Physics, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Earth and Planetary Astrophysics
Abstract

CoRoT is a space mission devoted to broadband star photometry in visible light during long observing runs. Developed by CNES with a wide european cooperation, it will be launched in 2006 with two pionneering scientific programs: star seismology and detection of terrestrial planets. CoRoT will use the transit method looking for terrestrial planets slightly larger than the Earth. It will check the existence (or absence) of big ``hot-terrestrials" and will discover, quite certainly, a large number of close-in giants. Our understanding on the origin and evolution of these ``hot" planets will certainly be greatly improved thanks to the strong sample enlargement and to the possibility to measure the planet mass from Doppler follow-up. We give in this paper a brief overview of the instrument, the satellite and the expected detection capabilities. Planetary radii will be measured down to Uranus size around solar type stars and down to Earth size around M type stars. Orbital periods will be determined up to 75 days.

Published
2005

173. Working group report on Asteroseismology and stellar activity from Dome C

Author

Bouchy, F., Mosser, B., Catala, C., Appourchaux, T., Bouvier, J., Chadid, M., Donati, J. F., Fossat, E., François-Xavier Schmider, Thevenin, F., Vauclair, G., Laboratoire d'Astrophysique de Marseille (LAM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), Casoli, T. Contini, J.M. Hameury and L. Pagani., Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Beaussier, Catherine, Casoli, T. Contini, J.M. Hameury and L. Pagani., 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), and Laboratoire de Cosmologie, Astrophysique Stellaire & Solaire, de Planétologie et de Mécanique des Fluides (CASSIOPEE)

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], [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]
Abstract

This paper presents the conclusions of the working group for stellar physics observations at the Dome-C station in Antarctica. It summarizes the advantages of Dome-C for asteroseismology and stellar activity, identifies strategies and possible instrumental projects to be conducted there, and concludes with recommendations for the development of stellar observations. The conclusions are based on the fact that continuous observations over several weeks or months without breaks due to the diurnal cycle are fundamental for programs of stellar physics and especially for asteroseismology and stellar activity. Therefore, Dome-C appears to be a unique ground-based site offering ideal conditions for continuous observations.

Published
2005

174. Abundance analysis of targets for the COROT/MONS asteroseismology missions II. Abundance analysis of the COROT main targets

Author

Bruntt H., Bikmaev I., Catala C., Solano E., Gillon M., Magain P., Van't Veer-Menneret C., Stütz C., Weiss W., Ballereau D., Bouret J., Charpinet S., Hua T., Katz D., Lignières F., and Lueftinger T.

Subjects
abundances [Stars], fundamental parameters [Stars]
Abstract

One of the goals of the ground-based support program for the COROT and MONS/RØMER satellite missions is to characterize suitable target stars for the part of the missions dedicated to asteroseismology. We present the detailed abundance analysis of nine of the potential COROT main targets using the semi-automatic software VWA. For two additional COROT targets we could not perform the analysis due to the high rotational velocity of these stars. For five stars with low rotational velocity we have also performed abundance analysis by a classical equivalent width method in order to test the reliability of the VWA software. The agreement between the different methods is good. We find that it is necessary to measure abundances extracted from each line relative to the abundances found from a spectrum of the Sun in order to remove systematic errors. We have constrained the global atmospheric parameters Teff log g, and [Fe/H] to within 70-100 K, 0.1-0.2 dex, and 0.1 dex for five stars which are slow rotators (ν sin i < 15 km s-1). For most of the stars we find good agreement with the parameters found from line depth ratios, Hα lines, Strömgren indices, previous spectroscopic studies, and also log g determined from the HIPPARCOS parallaxes. For the fast rotators (v sin i > 60 km s-1) it is not possible to constrain the atmospheric parameters.

Published
2004

176. High-Resolution Spectropolarimetry on the VLT

Author

Donati, J.-F., primary, Catala, C., additional, Mathys, G., additional, Kaufer, A., additional, Cuby, J.-G., additional, Appenzeller, I., additional, Stahl, O., additional, Cameron, A., additional, and Howarth, I., additional

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178. HD 51844: An AmδScuti in a binary showing periastron brightening

Author

Hareter, M., primary, Paparó, M., additional, Weiss, W., additional, García Hernández, A., additional, Borkovits, T., additional, Lampens, P., additional, Rainer, M., additional, De Cat, P., additional, Marcos-Arenal, P., additional, Vos, J., additional, Poretti, E., additional, Baglin, A., additional, Michel, E., additional, Baudin, F., additional, and Catala, C., additional

Published
2014
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180. Seismic analysis of HD 43587Aa, a solar-like oscillator in a multiple system

Author

Boumier, P., primary, Benomar, O., additional, Baudin, F., additional, Verner, G., additional, Appourchaux, T., additional, Lebreton, Y., additional, Gaulme, P., additional, Chaplin, W., additional, García, R. A., additional, Hekker, S., additional, Regulo, C., additional, Salabert, D., additional, Stahn, T., additional, Elsworth, Y., additional, Gizon, L., additional, Hall, M., additional, Mathur, S., additional, Michel, E., additional, Morel, T., additional, Mosser, B., additional, Poretti, E., additional, Rainer, M., additional, Roxburgh, I., additional, do Nascimento Jr., J.-D., additional, Samadi, R., additional, Auvergne, M., additional, Chaintreuil, S., additional, Baglin, A., additional, and Catala, C., additional

Published
2014
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181. Science requirements and their translation into instrumental design

Author

Catala, C., Aricha, A., Boulade, O., Diaz, E., Epstein, G., Favata, F., Horne, K., Kjeldsen, H., Lumb, D., J. Miguel Mas-Hesse, Roxburgh, I., Laboratoire d'études spatiales et d'instrumentation en astrophysique (LESIA), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Pôle Astronomie du LESIA, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, and Ingénieurs, Techniciens et Administratifs

Subjects
[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

Published
2003

182. An in-depth study of HD 174966 with CoRoT photometry and HARPS spectroscopy

Author

García Hernández, A., primary, Moya, A., additional, Michel, E., additional, Suárez, J. C., additional, Poretti, E., additional, Martín-Ruíz, S., additional, Amado, P. J., additional, Garrido, R., additional, Rodríguez, E., additional, Rainer, M., additional, Uytterhoeven, K., additional, Rodrigo, C., additional, Solano, E., additional, Rodón, J. R., additional, Mathias, P., additional, Rolland, A., additional, Auvergne, M., additional, Baglin, A., additional, Baudin, F., additional, Catala, C., additional, and Samadi, R., additional

Published
2013
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183. The Magnetic Field of beta Cep and the Be Phenomenon

Author

Henrichs, H.F., de Jong, J.A., Donati, J.F., Catala, C., Wade, G.A., Shorlin, S.L.S., Veen, P.M., Nichols, J.S., Kaper, L., Smith, M.A., Fabregat, J., and Low Energy Astrophysics (API, FNWI)

Published
2000

185. Short-term spectroscopic variability in the pre-main sequence Herbig AE star AB Aurigae during the MUSICOS 96 campaign

Author

Catala, C., Donati, J. F., Böhm, T., Landstreet, J., Henrichs, H. F., Yvonne Unruh, Hao, J., Cameron, A. C., Johns-Krull, C. M., Kaper, L., Simon, T., Foing, B. H., Cao, H., Ehrenfreund, P., Hatzes, A. P., Huang, L., Jong, J. A., Kennelly, E. J., Ten Kulve, E., Mulliss, C. L., Neff, J. E., Oliveira, J. M., Schrijvers, C., Stempels, H. C., Telting, J. H., Walton, N., and Yang, D.

Published
1999

186. Short-term spectroscopic variability in the pre-main sequence Herbif Ae star AB Aur during the MUSICOS 1996 campaign

Author

Catala, C., Donati, J.F., Boehm, T., Landstreet, J., Henrichs, H.F., Unruh, Y., Hao, J., Collier Cameron, A., Johns-Krull, C.M., Kaper, L., Simon, T., Foing, B.H., Cao, H., Ehrenfreund, P., Hatzes, A.P., Huang, L., de Jong, J.A., Kennelly, E.J., ten Kulve, E., Mulliss, C.L., Neff, J.E., Oliveira, J.M., Schrijvers, C., Stempels, H.C., Telting, J.H., Walton, N., Yang, D., and Low Energy Astrophysics (API, FNWI)

Published
1999

187. Asteroseismology Results from the MUSICOS Network

Author

Foing, B.H., Catala, C., Hubert, A.M., Hao, J.X., Kennelly, E.J., Balona, L.A., Henrichs, H.F., Sasselov, D.D., Takeuti, M., and High Energy Astrophys. & Astropart. Phys (API, FNWI)

Published
1998

188. MUSICOS observations of SU aur

Author

Unruh, Y.C., Donati, J.F., Balona, L.A., Bohm, T., Cao, H., Catala, C., Collier Cameron, A., Ehrenfreund, P., Foing, B., Granzer, T., Hao, J., Hatzes, A., Henrichs, H.F., Johns-Krull, C., de Jong, J.A., Kennelly, T., Landstreet, J., Morrison, N., Mullis, C., Neff, J.E., Oliveira, J., Schrijvers, C., Simon, T., Stempels, E., Strassmeier, K.G., Telting, J.H., Walton, N., Bookbinder, J.A., Donahue, R.A., and High Energy Astrophys. & Astropart. Phys (API, FNWI)

Published
1998

189. Low-amplitude rotational modulation rather than pulsations in the CoRoT B-type supergiant HD 46769

Author

Aerts, C., primary, Simón-Díaz, S., additional, Catala, C., additional, Neiner, C., additional, Briquet, M., additional, Castro, N., additional, Schmid, V. S., additional, Scardia, M., additional, Rainer, M., additional, Poretti, E., additional, Pápics, P. I., additional, Degroote, P., additional, Bloemen, S., additional, Østensen, R. H., additional, Auvergne, M., additional, Baglin, A., additional, Baudin, F., additional, Michel, E., additional, and Samadi, R., additional

Published
2013
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191. Discovery of the magnetic field in the pulsating B starβCephei

Author

Henrichs, H. F., primary, de Jong, J. A., additional, Verdugo, E., additional, Schnerr, R. S., additional, Neiner, C., additional, Donati, J.-F., additional, Catala, C., additional, Shorlin, S. L. S., additional, Wade, G. A., additional, Veen, P. M., additional, Nichols, J. S., additional, Damen, E. M. F., additional, Talavera, A., additional, Hill, G. M., additional, Kaper, L., additional, Tijani, A. M., additional, Geers, V. C., additional, Wiersema, K., additional, Plaggenborg, B., additional, and Rygl, K. L. J., additional

Published
2013
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193. Asymptotic and measured large frequency separations

Author

Mosser, B., primary, Michel, E., additional, Belkacem, K., additional, Goupil, M. J., additional, Baglin, A., additional, Barban, C., additional, Provost, J., additional, Samadi, R., additional, Auvergne, M., additional, and Catala, C., additional

Published
2013
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198. Study of HD 169392A observed by CoRoT and HARPS

Author

Mathur, S., primary, Bruntt, H., additional, Catala, C., additional, Benomar, O., additional, Davies, G. R., additional, García, R. A., additional, Salabert, D., additional, Ballot, J., additional, Mosser, B., additional, Régulo, C., additional, Chaplin, W. J., additional, Elsworth, Y., additional, Handberg, R., additional, Hekker, S., additional, Mantegazza, L., additional, Michel, E., additional, Poretti, E., additional, Rainer, M., additional, Roxburgh, I. W., additional, Samadi, R., additional, Stȩślicki, M., additional, Uytterhoeven, K., additional, Verner, G. A., additional, Auvergne, M., additional, Baglin, A., additional, Barceló Forteza, S., additional, Baudin, F., additional, and Roca Cortés, T., additional

Published
2012
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199. To PLAnetary Transit or not? An extremely large field of view camera with a CaF2component tested in thermo-vacuum

Author

Bergomi, M., primary, Magrin, D., additional, Farinato, J., additional, Viotto, V., additional, Ragazzoni, R., additional, Brunelli, A., additional, Dima, M., additional, Christiansen, P., additional, Ghigo, M., additional, Laubier, D., additional, Pasquier, H., additional, Piazza, D., additional, Pagano, I., additional, Piotto, G., additional, Basile, G., additional, and Catala, C., additional

Published
2012
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200. Gravito-inertial and pressure modes detected in the B3 IV CoRoT target HD 43317

Author

Pápics, P. I., primary, Briquet, M., additional, Baglin, A., additional, Poretti, E., additional, Aerts, C., additional, Degroote, P., additional, Tkachenko, A., additional, Morel, T., additional, Zima, W., additional, Niemczura, E., additional, Rainer, M., additional, Hareter, M., additional, Baudin, F., additional, Catala, C., additional, Michel, E., additional, Samadi, R., additional, and Auvergne, M., additional

Published
2012
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