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The ExoGRAVITY project: using single mode interferometry to characterize exoplanets

Lacour, S. and Wang, J. J. and Nowak, Mathias and Pueyo, Laurent A. and Eisenhauer, Frank and Lagrange, A.-M. and Mollière, Paul and Abuter, Roberto and Amorin, António and Asensio-Torres, R. and Baubock, Michi and Benisty, Myriam and Berger, Jean-Philippe and Beust, Hervé and Blunt, S. and Boccaletti, Anthony and Bonnefoy, Mickaël and Bonnet, Henri and Brandner, Wolfgang and Cantalloube, Faustine and Caselli, Paola and Charnay, Benjamin and Chauvin, Gael and Choquet, Élodie and Christiaens, Valentin and Clénet, Yann and Cridland, Alex and de Zeeuw, Tim and Dembet, Roderick and Dexter, Jason and Drescher, Antonia and Duvert, Gilles and Gao, Feng and Garcia-Lopez, Rebeca and Gardner, Tyler and Gendron, Eric and Genzel, Reinhard and Gillessen, Stefan and Girard, Julien H. and Haubois, Xavier and Heissel, Gernot and Henning, Thomas and Hinkley, Sasha and Hippler, Stefan and Horrobin, Matthew and Houlle, Matthis and Hubert, Zoltan and Jimenez Rosales, A and Jocou, Laurent and Kammerer, Jens and Keppler, Miriam and Kervella, Pierre and Kreidberg, Laura and Lapeyrere, Vincent and Le Bouquin, Jean-Baptiste and Léna, Pierre and Lutz, Dieter and Maire, Anne-Lise and Mérand, Antoine and Monnier, John and Mouillet, David and Muller, André and Nasedkin, E. and Ott, Thomas and Otten, Gilles and Paladini, Claudia and Paumard, Thibaut and Rousselet-Perraut, Karine and Perrin, Guy S. and Pfuhl, Oliver and Rameau, Julien and Rodet, Laetitia and Rodriguez-Coira, Gustavo and Rousset, Gerard and Shangguan, Jinyi and Shimizu, Taro and Stadler, Julia and Straub, Odele and Straubmeier, Christian and Sturm, Eckhard and Stolker, Tomas and van Dishoeck, Ewine F. and Vigan, Arthur and Vincent, Frederic and von Fellenberg, Sebastiano and Ward Duong, Kimb and Widmann, Felix and Wieprecht, Ekkehard and Wiezorrek, Erich and Woillez, Julien (2020) The ExoGRAVITY project: using single mode interferometry to characterize exoplanets. In: Optical and Infrared Interferometry and Imaging VII. Proceedings of SPIE. No.11446. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 114460O. ISBN 9781510636798.

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Combining adaptive optics and interferometric observations results in a considerable contrast gain compared to single-telescope, extreme AO systems. Taking advantage of this, the ExoGRAVITY project is a survey of known young giant exoplanets located in the range of 0.1” to 2” from their stars. The observations provide astrometric data of unprecedented accuracy, being crucial for refining the orbital parameters of planets and illuminating their dynamical histories. Furthermore, GRAVITY will measure non-Keplerian perturbations due to planet-planet interactions in multi-planet systems and measure dynamical masses. Over time, repetitive observations of the exoplanets at medium resolution (R = 500) will provide a catalogue of K-band spectra of unprecedented quality, for a number of exoplanets. The K-band has the unique properties that it contains many molecular signatures (CO, H₂O, CH₄, CO₂). This allows constraining precisely surface gravity, metallicity, and temperature, if used in conjunction with self-consistent models like Exo-REM. Further, we will use the parameter-retrieval algorithm petitRADTRANS to constrain the C/O ratio of the planets. Ultimately, we plan to produce the first C/O survey of exoplanets, kick-starting the difficult process of linking planetary formation with measured atomic abundances.

Item Type:Book Section
Related URLs:
URLURL TypeDescription
Lacour, S.0000-0002-6948-0263
Wang, J. J.0000-0003-0774-6502
Pueyo, Laurent A.0000-0003-3818-408X
Mollière, Paul0000-0003-4096-7067
Asensio-Torres, R.0000-0003-2990-0726
Benisty, Myriam0000-0002-7695-7605
Berger, Jean-Philippe0000-0001-5025-0428
Blunt, S.0000-0002-3199-2888
Boccaletti, Anthony0000-0001-9353-2724
Bonnefoy, Mickaël0000-0001-5579-5339
Brandner, Wolfgang0000-0003-1939-6351
Caselli, Paola0000-0003-1481-7911
Choquet, Élodie0000-0002-9173-0740
Christiaens, Valentin0000-0002-0101-8814
Dexter, Jason0000-0003-3903-0373
Genzel, Reinhard0000-0002-2767-9653
Girard, Julien H.0000-0001-8627-0404
Henning, Thomas0000-0002-1493-300X
Hinkley, Sasha0000-0001-8074-2562
Jocou, Laurent0000-0001-9376-1818
Kervella, Pierre0000-0003-0626-1749
Kreidberg, Laura0000-0003-0514-1147
Lutz, Dieter0000-0003-0291-9582
Maire, Anne-Lise0000-0002-2591-4138
Monnier, John0000-0002-3380-3307
Nasedkin, E.0000-0002-9792-3121
Otten, Gilles0000-0002-6717-1977
Rameau, Julien0000-0003-0029-0258
Shimizu, Taro0000-0002-2125-4670
Stolker, Tomas0000-0002-5823-3072
van Dishoeck, Ewine F.0000-0001-7591-1907
Vigan, Arthur0000-0002-5902-7828
Ward Duong, Kimb0000-0002-4479-8291
Additional Information:© 2020 SPIE. This unnumbered section is used to identify those who have aided the authors in understanding or accomplishing the work presented and to acknowledge sources of funding.
Series Name:Proceedings of SPIE
Issue or Number:11446
Record Number:CaltechAUTHORS:20201216-152241196
Persistent URL:
Official Citation:Sylvestre Lacour, Jason J. Wang, Mathias Nowak, Laurent A. Pueyo, Frank Eisenhauer, A.-M. Lagrange, Paul Mollière, Roberto Abuter, Antonio Amorin, R. Asensio-Torres, Michi Baubock, Myriam Benisty, Jean-Philippe Berger, H. Beust, S. Blunt, Anthony Boccaletti, Alexander Bohn, M. Bonnefoy, Henri Bonnet, Wolfgang Brandner, Faustine Cantalloube, Paola Caselli, Benjamin Charnay, Gael Chauvin, Elodie Choquet, V. Christiaens, Yann Clénet, A. Cridland, T. de Zeeuw, Roderick Dembet, J. Dexter, A. Drescher, Gilles Duvert, feng gao, Paulo Garcia, R. Garcia-Lopez, Tyler Gardner, Eric Gendron, Reinhard Genzel, Stefan Gillessen, Julien H. Girard, Xavier Haubois, G. Heißel, Thomas Henning, S. Hinkley, Stefan Hippler, Matthew Horrobin, M. Houllé, Zoltan Hubert, A Jiménez-Rosales, Laurent Jocou, J. Kammerer, M. Keppler, Pierre Kervella, L. Kreidberg, Vincent Lapeyrere, Jean-Baptiste Le Bouquin, Pierre Léna, D. Lutz, Anne-Lise Maire, Antoine Mérand, John Monnier, David Mouillet, A. Muller, E. Nasedkin, T. Ott, Gilles Otten, C. Paladini, Thibaut Paumard, Karine Rousselet-Perraut, Guy S. Perrin, Oliver Pfuhl, Julien Rameau, Laetitia Rodet, G. Rodriguez-Coira, Gerard Rousset, Jinyi Shangguan, T. Shimizu, Julia Stadler, Odele Straub, Christian Straubmeier, Eckhard Sturm, T. Stolker, Ewine F. van Dishoeck, Arthur Vigan, Frederic Vincent, Sebastiano von Fellenberg, Kim Ward Duong, Felix Widmann, Ekkehard Wieprecht, Erich Wiezorrek, and Julien Woillez "The ExoGRAVITY project: using single mode interferometry to characterize exoplanets", Proc. SPIE 11446, Optical and Infrared Interferometry and Imaging VII, 114460O (13 December 2020);
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:107142
Deposited By: George Porter
Deposited On:16 Dec 2020 23:51
Last Modified:16 Nov 2021 19:00

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