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18 results on '"ten Brummelaar, T."'

1. Multiplicity of northern bright O-type stars with optical long baseline interferometry

Author

Lanthermann, C., Le Bouquin, J.-B., Sana, H., Mérand, A., Monnier, J. D., Perraut, K., Frost, A. J., Mahy, L., Gosset, E., De Becker, M., Kraus, S., Anugu, N., Davies, C. L., Ennis, J., Gardner, T., Labdon, A., Setterholm, B., ten Brummelaar, T., and Schaefer, G. H.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics of Galaxies (astro-ph.GA), FOS: Physical sciences, Astrophysics - Astrophysics of Galaxies, Solar and Stellar Astrophysics (astro-ph.SR)
Abstract

The study of the multiplicity of massive stars gives hints on their formation processes and their evolutionary paths, which are still not fully understood. Large separation binaries (>50 milliseconds of arc, mas) can be probed by adaptive-optics-assisted direct imaging and sparse aperture masking, while close binaries can be resolved by photometry and spectroscopy. However, optical long baseline interferometry is mandatory to establish the multiplicity of Galactic massive stars at the separation gap between 1 and 50 mas. In this paper, we aim to demonstrate the capability of the new interferometric instrument MIRC-X, located at the CHARA Array, to study the multiplicity of O-type stars and therefore probe the full range of separation for more than 120 massive stars (H, 15 pages, 9 figures, 5 tables, accepted in A&A

Published
2023
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2. The Future of Exoplanet Direct Detection

Author

Monnier, J., Rau, G., Baines, E., Sanchez-Bermudez, J., Elvis, M., Ragland, S., Akeson, R., van Belle, G., Norris, R., Gordon, K., Defrère, D., Ridgway, S., Le Bouquin, J., Anugu, N., Scott, N., Kane, S., Richardson, N., Regaly, Z., Zhu, Z., Chiavassa, A., Vasisht, G., Stassun, K., Dong, C., Absil, O., Lacour, S., Weigelt, G., Gies, D., Adams, F., Calvet, N., Quanz, S., Espaillat, C., Gardner, T., Greenbaum, A., Millan-Gabet, R., Packham, C., Gai, M., Kral, Q., Berger, J., Linz, H., Klarmann, L., Bae, J., Lopez Garcia, R., Alexandre, G., Baron, F., Hartmann, L., Kishimoto, M., McClure, M., Olofsson, J., Haniff, C., Line, M., Petrov, R., Smith, M., Hummel, C., ten Brummelaar, T., De Furio, M., Rinehart, S., Leisawitz, D., Danchi, W., Huber, D., Wishnow, E., Mourard, D., Pope, B., Ireland, M., Kraus, S., Setterholm, B., White, R., ITA, USA, GBR, FRA, DEU, ESP, 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, and 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)

Subjects
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astrophysics::Instrumentation and Methods for Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Computer Science::Digital Libraries, [SDU.ASTR.IM]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Instrumentation and Methods for Astrophysic [astro-ph.IM]
Abstract

International audience; Diffraction fundamentally limits our ability to image and characterize exoplanets. Interferometry offers some advantages in exoplanet detection and characterization and we explore in this white paper some of the potential scientific breakthroughs possible.

Published
2019

3. Imaging the Key Stages of Planet Formation

Author

Monnier, J., Rau, G., Bermudez, J., Ragland, S., Akeson, R., Duchene, G., van Belle, G., Norris, R., Gordon, K., Defrère, D., Kluska, J., Ridgway, S., Le Bouquin, J., Anugu, N., Scott, N., Kane, S., Richardson, N., Regaly, Z., Zhu, Z., Vasisht, G., Stassun, K., Andrews, S., Lacour, S., Weigelt, G., Turner, N., Adams, F., Gies, D., Calvet, N., Espaillat, C., Millan-Gabet, R., Gardner, T., Packham, C., Gai, M., Kral, Q., Berger, J., Linz, H., Klarmann, L., Bate, M., Bae, J., Lopez, R., Garufi, A., Baron, F., Kama, M., Wilner, D., Hartmann, L., Kishimoto, M., Olofsson, J., McClure, M., Haniff, C., Hoenig, S., Line, M., Petrov, R., Smith, M., ten Brummelaar, T., De Furio, M., Koutoulaki, M., Rinehart, S., Leisawitz, D., Danchi, W., Huber, D., Zhang, K., Pope, B., Ireland, M., Kraus, S., Isella, A., Setterholm, B., White, R., University of Michigan [Ann Arbor], University of Michigan System, 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, and 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)

Subjects
[SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], 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; In this white paper, we explore how higher angular resolution beyond ALMA and 8m-class telescopes can extend our understanding of the key stages of planet formation, to resolve accreting circumplanetary disks themselves, and to watch planets forming in situ for the nearest star-forming regions.

Published
2019

4. Spectroscopy and Interferometry of Luminous Blue Variables

Author

Richardson, N. D., Gies, D. R., Morrison, N. D., Schaefer, G., Ten Brummelaar, T., John D Monnier, and Parks, J. R.

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

We report on the preliminary results of a three-year monitoring campaign of Galactic and Magellanic LBVs with both moderate and high resolution spectroscopy. We have collected more than 500 moderate-resolution spectra of 20 stars in the red portion of the optical spectrum, which includes the wind-sensitive transitions of H$\alpha$ and He I 5876 and 6678 Angstroms. We summarize our detailed study of 15 years of high resolution H$\alpha$ spectroscopy of the prototypical luminous blue variable, P Cygni. We report on the discovery of discrete absorption components in P Cygni's H$\alpha$ profile, and we discuss their relationship to structure in the wind. These results are compared to our recent high resolution interferometric imaging of the $H$-band emitting region surrounding the star. We discuss recent observations of $\eta$ Car, highlighting its unusual recovery from the previous periastron passage. Our results on HDE 326823 indicate that the star has a short period binary orbit, with Roche Lobe overflow onto an unseen massive companion., Comment: 5 pages, 2 figures, To be published in the proceedings of the meeting 'Four decades of research on massive stars' in honor of Tony Moffat, 11-15 July 2011, Saint-Michel-des-Saints, Quebec

Published
2011
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6. Exoplanets, Cool Stars, and Interferometry

Author

Braun, Kaspar, Boyajian, T. S., Kane, S. R., Belle, G. T., Hebb, L., Jones, J., David Ciardi, Raymond, S., Lopez-Morales, M., Knutson, H. A., Ten Brummelaar, T., Farrington, C., Schaefer, G., Chara Group, T., Georgia State University, University System of Georgia (USG), SSE 2012, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 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-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Center for High Angular Resolution Astronomy (CHARA), and University System of Georgia (USG)-University System of Georgia (USG)

Subjects
[PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astrophysics::Instrumentation and Methods for Astrophysics, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

We have been using the CHARA Interferometric Array on Mount Wilson over the course of the last 4 years to directly determine diameters of stars. When coupled with literature photometry, these radii provide stellar effective temperatures, luminosities, and thus habitable zone locations. This presentation reviews recent results of our survey, particularly with respect to the stars that host extrasolar planets around them, and what we have learned about the planets from studying the parent stars.

8. Infrared Interferometric Gravity Darkening Observations of Vega with CHARA/FLUOR

Author

Aufdenberg, J., Antoine Mérand, Coudé Du Foresto, V., Absil, O., Di Folco, E., Kervella, P., Ridgway, S., Berger, D., Ten Brummelaar, T., Mcalister, H., Sturmann, J., Turner, N., 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]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

9. Fundamental Properties of Cool Stars with Interferometry

Author

Boyajian, T. S., Braun, K., Belle, G., Ten Brummelaar, T., David Ciardi, Henry, T., Lopez-Morales, M., Mcalister, H., Ridgway, S., Farrington, C., Goldfinger, P. J., Sturmann, L., Sturmann, J., and Turner, N.

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

We present measurements of fundamental astrophysical properties of nearby, low-mass, K- and M-dwarfs from our DISCOS survey (DIameterS of COol Stars). The principal goal of our study is the determination of linear radii and effective temperatures for these stars. We calculate their radii from angular diameter measurements using the CHARA Array and Hipparcos distances. Combined with bolometric flux measurements based on literature photometry, we use our angular diameter results to calculate their effective surface temperatures. We present preliminary results established on an assortment of empirical relations to the stellar effective temperature and radius that are based upon these measurements. We elaborate on the discrepancy seen between theoretical and observed stellar radii, previously claimed to be related to stellar activity and/or metallicity. Our preliminary conclusion, however, is that convection plays a larger role in the determination of radii of these late-type stars. Understanding the source of the radius disagreement is likely to impact other areas of study for low-mass stars, such as the detection and characterization of extrasolar planets in the habitable zones., Comment: Contribution to Proceedings of Cool Stars 16 Workshop; 8 pages in ASP format; 9 figures

10. Recent Results form the CHARA Array

Author

Ten Brummelaar, T. A., Huber, D., Braun, K., Boyajian, T., Richardson, N. D., Schaefer, G., Tallon-Bosc, I., Mourard, D., Mcalister, H. A., Turner, N. H., Sturmann, L., Sturmann, J., John D Monnier, and Ireland, M.

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

The CHARA Array is a six 1-m telescope optical and near infrared interferometer located at the Mount Wilson Observatory in southern California and operated by the Center for High Angular Resolution Astronomy of Georgia State University. The CHARA Array has been in regular scientific operation since 2005 and now has over 55 publications in the refereed literature, including two in Science and one in Nature. The Array now supports seven beam combiners ranging from 0.5 microns up to 2.3 microns and combing from 2 to 4 beams at a time. An upgrade to a full 6 beam combiner is now underway and fringes with all six telescopes were achieved soon after the meeting.We present some of the more recent results from the CHARA-Array., To appear in proceedings of PASP Resolving the Future of Astronomy with Long-Baseline Interferometry March 28 -31, 2011

11. Planet Formation Imager (PFI): science vision and key requirements

Author

Kraus, S, Monnier, JD, Ireland, MJ, Duchene, G, Espaillat, C, Honig, S, Juhasz, A, Mordasini, C, Olofsson, J, Paladini, C, Stassun, K, Turner, N, Vasisht, G, Harries, TJ, Bate, MR, Gonzalez, J-F, Matter, A, Zhu, Z, Panic, O, Regaly, Z, Morbidelli, A, Meru, F, Wolf, S, Ilee, J, Berger, J-P, Zhao, M, Kral, Q, Morlok, A, Bonsor, A, Ciardi, D, Kane, Kratter, K, Laughlin, G, Pepper, J, Raymond, S, Labadie, L, Nelson, RP, Weigelt, G, Ten Brummelaar, T, Pierens, A, Oudmaijer, R, Kley, W, Pope, B, Jensen, ELN, Bayo, A, Smith, M, Boyajian, T, Quiroga-Nunez, LH, Millan-Gabet, R, Chiavassa, A, Gallenne, A, Reynolds, M, De Wit, W-J, Wittkowski, M, Millour, F, Gandhi, P, Ramos Almeida, C, Alonso Herrero, A, Packham, C, Kishimoto, M, Tristram, KRW, Pott, J-U, Surdej, J, Buscher, D, Haniff, C, Lacour, S, Petrov, R, Ridgway, S, Tuthill, P, Van Belle, G, Armitage, P, Baruteau, C, Benisty, M, Bitsch, B, Paardekooper, S-J, Pinte, C, Masset, F, and Rosotti, GP

Subjects
13. Climate action, extrasolar planets, protoplanetary disks, Astrophysics::Earth and Planetary Astrophysics, interferometry, planet formation, high angular resolution imaging
Abstract

The Planet Formation Imager (PFI) project aims to provide a strong scientific vision for ground-based optical astronomy beyond the upcoming generation of Extremely Large Telescopes. We make the case that a breakthrough in angular resolution imaging capabilities is required in order to unravel the processes involved in planet formation. PFI will be optimised to provide a complete census of the protoplanet population at all stellocentric radii and over the age range from 0.1 to ~100 Myr. Within this age period, planetary systems undergo dramatic changes and the final architecture of planetary systems is determined. Our goal is to study the planetary birth on the natural spatial scale where the material is assembled, which is the "Hill Sphere" of the forming planet, and to characterise the protoplanetary cores by measuring their masses and physical properties. Our science working group has investigated the observational characteristics of these young protoplanets as well as the migration mechanisms that might alter the system architecture. We simulated the imprints that the planets leave in the disk and study how PFI could revolutionise areas ranging from exoplanet to extragalactic science. In this contribution we outline the key science drivers of PFI and discuss the requirements that will guide the technology choices, the site selection, and potential science/technology tradeoffs., S.K. acknowledges support from an STFC Rutherford Fellowship (ST/J004030/1) and Philip Leverhulme Prize (PLP-2013-110). Part of this work was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration.

12. Hot Circumstellar Material around Vega

Author

Absil, O., Di Folco, E., Antoine Mérand, Coudé Du Foresto, V., Augereau, J., Aufdenberg, J., Kervella, A., Ridgway, S., Ten Brummelaar, T., Mcalister, H., 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]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

13. CANDID: Companion Analysis and Non-Detection in Interferometric Data

Author

Gallenne, A., Mérand, A., Kervella, P., John D Monnier, Schaefer, G. H., Baron, F., Breitfelder, J., Le Bouquin, J. B., Roettenbacher, R. M., Gieren, W., Pietrzynski, G., Mcalister, H., Ten Brummelaar, T., Sturmann, J., Sturmann, L., Turner, N., Ridgway, S., and Kraus, S.

15. The GJ 876 System: Fundamental Stellar Parameters and Planets in the Habitable Zone

Author

Braun, Kaspar, Boyajian, T. S., Jones, J., Kane, S. R., Raymond, S. N., Belle, G. T., David Ciardi, Lopez-Morales, M., Ten Brummelaar, T. A., Mcalister, H. A., Schaefer, G., Ridgway, S. R., Sturmann, J., Sturmann, L., Turner, N. H., Farrington, C., Goldfinger, P. J., Georgia State University, University System of Georgia (USG), SSE 2012, Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 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-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Center for High Angular Resolution Astronomy (CHARA), and University System of Georgia (USG)-University System of Georgia (USG)

Subjects
[PHYS.ASTR.EP]Physics [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astrophysics::Instrumentation and Methods for Astrophysics, [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP], Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics
Abstract

International audience; GJ 876 is a nearby M dwarf hosting four currently known extrasolar planets. We use the CHARA interferometric array to determine the stellar angular diameter. Coupled with trigonometric parallax values and literature photometry, we obtain direct estimates of the stellar physical size, surface temperature, luminosity, and location / extent of the system's habitable zone (HZ). We present our measurement results of the GJ 876 stellar astrophysical parameters and the location of the HZ relative to the planetary orbits.

17. Exoplanet Characterization and the Search for Life

Author

Kasting, James, Traub, W., Roberge, A., Leger, A., Schwartz, A., Wootten, A., Vosteen, A., Lo, A., Brack, A., Tanner, A., Coustenis, A., Lane, B., Oppenheimer, B., Mennesson, B., Lopez, B., Grillmair, C., Beichman, C., Cockell, C., Hanot, C., Mccarthy, C., Stark, C., Marois, C., Aime, C., Angerhausen, D., Montes, D., Wilner, D., Defrere, D., Mourard, D., Lin, D., Kite, E., Chassefiere, E., Malbet, F., Tian, F., Westall, F., Illingworth, G., Vasisht, G., Serabyn, G., Marcy, G., Bryden, G., White, G., Laughlin, G., Torres, G., Hammel, H., Ferguson, H., Shibai, H., Rottgering, H., Surdej, J., Wiseman, J., Ge, J., Bally, J., Krist, J., Monnier, J., Trauger, J., Horner, J., Catanzarite, J., Harrington, J., Nishikawa, J., Stapelfeldt, K., Braun, K., Biazzo, K., Carpenter, K., Balasubramanian, K., Kaltenegger, L., Postman, M., Spaans, M., Turnbull, M., Levine, M., Burchell, M., Ealey, M., Kuchner, M., Marley, M., Martin Dominik, Mountain, M., Kenworthy, M., Muterspaugh, M., Shao, M., Zhao, M., Tamura, M., Kasdin, N., Haghighipour, N., Kiang, N., Elias, N., Woolf, N., Mason, N., Absil, O., Guyon, O., Lay, O., Borde, P., Fouque, P., Kalas, P., Lowrance, P., Plavchan, P., Hinz, P., Kervella, P., Chen, P., Akeson, R., Soummer, R., Waters, R., Barry, R., Kendrick, R., Brown, R., Vanderbei, R., Woodruff, R., Danner, R., Allen, R., Polidan, R., Seager, S., Macphee, S., Hosseini, S., Metchev, S., Kafka, S., Ridgway, S., Rinehart, S., Unwin, S., Shaklan, S., Ten Brummelaar, T., Mazeh, T., Meadows, V., Weiss, W., Danchi, W., Ip, W., and Rabbia, Y.

Subjects
Earth and Planetary Astrophysics (astro-ph.EP), Astrophysics::Solar and Stellar Astrophysics, FOS: Physical sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Astrophysics::Galaxy Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

Over 300 extrasolar planets (exoplanets) have been detected orbiting nearby stars. We now hope to conduct a census of all planets around nearby stars and to characterize their atmospheres and surfaces with spectroscopy. Rocky planets within their star's habitable zones have the highest priority, as these have the potential to harbor life. Our science goal is to find and characterize all nearby exoplanets; this requires that we measure the mass, orbit, and spectroscopic signature of each one at visible and infrared wavelengths. The techniques for doing this are at hand today. Within the decade we could answer long-standing questions about the evolution and nature of other planetary systems, and we could search for clues as to whether life exists elsewhere in our galactic neighborhood., Comment: 7 pages, 2 figures, submitted to Astro2010 Decadal Review

18. Interferometric Observations of Cepheids. p-factor and center to limb darkening measurements

Author

Antoine Mérand, Kervella, P., Coudé Du Foresto, V., Ten Brummelaar, T., Mcalister, H., 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]Physics [physics]/Astrophysics [astro-ph]
Abstract

International audience

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