Search Results for author: S. Udry

Found 9 papers, 1 papers with code

Alleviating the Transit Timing Variations bias in transit surveys. II. RIVERS: Twin resonant Earth-sized planets around Kepler-1972 recovered from Kepler's false positive

no code implementations27 Jan 2022 A. Leleu, J. -B. Delisle, R. Mardling, S. Udry, G. Chatel, Y. Alibert, P. Eggenberger

In particular, we show that in Kepler-1972, not taking into account planet-planet interactions yields an error of $\sim 30\%$ on the radii of planets b and c, in addition to generating in-transit scatter, which leads to mistake KOI3184. 02 for a false positive.

Alleviating the transit timing variation bias in transit surveys. I. RIVERS: Method and detection of a pair of resonant super-Earths around Kepler-1705

no code implementations12 Nov 2021 A. Leleu, G. Chatel, S. Udry, Y. Alibert, J. -B. Delisle, R. Mardling

Here we introduce a detection method that is robust to large TTVs, and illustrate its use by recovering and confirming a pair of resonant super-Earths with ten-hour TTVs around Kepler-1705.

Six transiting planets and a chain of Laplace resonances in TOI-178

no code implementations22 Jan 2021 A. Leleu, Y. Alibert, N. C. Hara, M. J. Hooton, T. G. Wilson, P. Robutel, J. -B. Delisle, J. Laskar, S. Hoyer, C. Lovis, E. M. Bryant, E. Ducrot, J. Cabrera, L. Delrez, J. S. Acton, V. Adibekyan, R. Allart, C. Allende Prieto, R. Alonso, D. Alves, D. R. Anderson, D. Angerhausen, G. Anglada Escudé, J. Asquier, D. Barrado, S. C. C. Barros, W. Baumjohann, D. Bayliss, M. Beck, T. Beck, A. Bekkelien, W. Benz, N. Billot, A. Bonfanti, X. Bonfils, F. Bouchy, V. Bourrier, G. Boué, A. Brandeker, C. Broeg, M. Buder, A. Burdanov, M. R. Burleigh, T. Bárczy, A. C. Cameron, S. Chamberlain, S. Charnoz, B. F. Cooke, C. Corral Van Damme, A. C. M. Correia, S. Cristiani, M. Damasso, M. B. Davies, M. Deleuil, O. D. S. Demangeon, B. -O. Demory, P. Di Marcantonio, G. Di Persio, X. Dumusque, D. Ehrenreich, A. Erikson, P. Figueira, A. Fortier, L. Fossati, M. Fridlund, D. Futyan, D. Gandolfi, A. García Muñoz, L. J. Garcia, S. Gill, E. Gillen, M. Gillon, M. R. Goad, J. I. González Hernández, M. Guedel, M. N. Günther, J. Haldemann, B. Henderson, K. Heng, A. E. Hogan, K. Isaak, E. Jehin, J. S. Jenkins, A. Jordán, L. Kiss, M. H. Kristiansen, K. Lam, B. Lavie, A. Lecavelier des Etangs, M. Lendl, J. Lillo-Box, G. Lo Curto, D. Magrin, C. J. A. P. Martins, P. F. L. Maxted, J. McCormac, A. Mehner, G. Micela, P. Molaro, M. Moyano, C. A. Murray, V. Nascimbeni, N. J. Nunes, G. Olofsson, H. P. Osborn, M. Oshagh, R. Ottensamer, I. Pagano, E. Pallé, P. P. Pedersen, F. A. Pepe, C. M. Persson, G. Peter, G. Piotto, G. Polenta, D. Pollacco, E. Poretti, F. J. Pozuelos, D. Queloz, R. Ragazzoni, N. Rando, F. Ratti, H. Rauer, L. Raynard, R. Rebolo, C. Reimers, I. Ribas, N. C. Santos, G. Scandariato, J. Schneider, D. Sebastian, M. Sestovic, A. E. Simon, A. M. S. Smith, S. G. Sousa, A. Sozzetti, M. Steller, A. Suárez Mascareño, Gy. M. Szabó, D. Ségransan, N. Thomas, S. Thompson, R. H. Tilbrook, A. Triaud, O. Turner, S. Udry, V. Van Grootel, H. Venus, F. Verrecchia, J. I. Vines, N. A. Walton, R. G. West, P. J. Wheatley, D. Wolter, M. R. Zapatero Osorio

All planets but the innermost one form a 2:4:6:9:12 chain of Laplace resonances, and the planetary densities show important variations from planet to planet, jumping from 1. 02(+0. 28/-0. 23) to 0. 177(+0. 055/-0. 061) times the Earth's density between planets c and d. Using Bayesian interior structure retrieval models, we show that the amount of gas in the planets does not vary in a monotonous way, contrary to what one would expect from simple formation and evolution models and unlike other known systems in a chain of Laplace resonances.

Earth and Planetary Astrophysics

CHEOPS observations of the HD 108236 planetary system: A fifth planet, improved ephemerides, and planetary radii

no code implementations3 Jan 2021 A. Bonfanti, L. Delrez, M. J. Hooton, T. G. Wilson, L. Fossati, Y. Alibert, S. Hoyer, A. J. Mustill, H. P. Osborn, V. Adibekyan, D. Gandolfi, S. Salmon, S. G. Sousa, A. Tuson, V. Van Grootel, J. Cabrera, V. Nascimbeni, P. F. L. Maxted, S. C. C. Barros, N. Billot, X. Bonfils, L. Borsato, C. Broeg, M. B. Davies, M. Deleuil, O. D. S. Demangeon, M. Fridlund, G. Lacedelli, M. Lendl, C. Persson, N. C. Santos, G. Scandariato, Gy. M. Szabó, A. Collier Cameron, S. Udry, W. Benz, M. Beck, D. Ehrenreich, A. Fortier, K. G. Isaak, D. Queloz, R. Alonso, J. Asquier, T. Bandy, T. Bárczy, D. Barrado, O. Barragán, W. Baumjohann, T. Beck, A. Bekkelien, M. Bergomi, M-D. Busch, A. Brandeker, V. Cessa, S. Charnoz, B. Chazelas, C. Corral Van Damme, B. -O. Demory, A. Erikson, J. Farinato, D. Futyan, A. Garcia Muñoz, M. Gillon, M. Guedel, P. Guterman, J. Hasiba, K. Heng, E. Hernandez, L. Kiss, T. Kuntzer, J. Laskar, A. Lecavelier des Etangs, C. Lovis, D. Magrin, L. Malvasio, L. Marafatto, H. Michaelis, M. Munari, G. Olofsson, H. Ottacher, R. Ottensamer, I. Pagano, E. Pallé, G. Peter, D. Piazza, G. Piotto, D. Pollacco, R. Ragazzoni, N. Rando, F. Ratti, H. Rauer, I. Ribas, M. Rieder, R. Rohlfs, F. Safa, M. Salatti, D. Ségransan, A. E. Simon, A. M. S. Smith, M. Sordet, M. Steller, N. Thomas, M. Tschentscher, V. Van Eylen, V. Viotto, I. Walter, N. A. Walton, F. Wildi, D. Wolter

We analyse the available TESS light curves and one CHEOPS transit light curve for each known planet in the system.

Earth and Planetary Astrophysics

The polarimetric imaging mode of VLT/SPHERE/IRDIS II: Characterization and correction of instrumental polarization effects

1 code implementation28 Sep 2019 R. G. van Holstein, J. H. Girard, J. de Boer, F. Snik, J. Milli, D. M. Stam, C. Ginski, D. Mouillet, Z. Wahhaj, H. M. Schmid, C. U. Keller, M. Langlois, K. Dohlen, A. Vigan, A. Pohl, M. Carbillet, D. Fantinel, D. Maurel, A. Origné, C. Petit, J. Ramos, F. Rigal, A. Sevin, A. Boccaletti, H. Le Coroller, C. Dominik, T. Henning, E. Lagadec, F. Ménard, M. Turatto, S. Udry, G. Chauvin, M. Feldt, J. -L. Beuzit

With our correction method we reach in all filters a total polarimetric accuracy of <0. 1% in the degree of linear polarization and an accuracy of a few degrees in angle of linear polarization.

Instrumentation and Methods for Astrophysics Earth and Planetary Astrophysics

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