Exoplanets and Stellar Physics

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A new look at NICMOS transmission spectroscopy: No conclusive evidence for molecular features

IAU Symposium 276 (2011) 478-479-478-479

Authors:

NP Gibson, F Pont, S Aigrain
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Spitzer Infrared Observations and Independent Validation of the Transiting Super-Earth CoRoT-7b

(2011)

Authors:

Francois Fressin, Guillermo Torres, Frederic Pont, Heather A Knutson, David Charbonneau, Tsevi Mazeh, Suzanne Aigrain, Malcolm Fridlund, Christopher E Henze, Tristan Guillot, Heike Rauer
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CoRoT LRa02-E2-0121: Neptune-size planet candidate turns into a hierarchical triple system with a giant primary

Astronomy and Astrophysics 534 (2011)

Authors:

L Tal-Or, A Santerne, T Mazeh, F Bouchy, C Moutou, R Alonso, D Gandolfi, S Aigrain, M Auvergne, P Barge, AS Bonomo, P Bordé, H Deeg, S Ferraz-Mello, M Deleuil, R Dvorak, A Erikson, M Fridlund, M Gillon, EW Guenther, T Guillot, A Hatzes, L Jorda, H Lammer, A Léger, A Llebaria, M Ollivier, M Pätzold, D Queloz, H Rauer, D Rouan, Y Tsodikovich, G Wuchterl

Abstract:

This paper presents the case of CoRoT LRa02-E2-0121, which was initially classified as a Neptune-size transiting-planet candidate on a relatively wide orbit of 36.3 days. Follow-up observations were performed with UVES, Sandiford, SOPHIE, and HARPS. These observations revealed a faint companion in the spectra. To find the true nature of the system we derived the radial velocities of the faint companion using TODMOR-a two-dimensional correlation technique, applied to the SOPHIE spectra. Modeling the lightcurve with EBAS we discovered a secondary eclipse with a depth of∼0.07%, indicating a diluted eclipsing binary. Combined MCMC modeling of the lightcurve and the radial velocities suggested that CoRoT LRa02-E2-0121 is a hierarchical triple system with an evolved G-type primary and an A-type:F-type grazing eclipsing binary. Such triple systems are difficult to discover. © 2011 ESO.
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Planetary transit candidates in the CoRoT LRa01 field

(2011)

Authors:

L Carone, D Gandolfi, J Cabrera, AP Hatzes, HJ Deeg, Sz Csizmadia, M Paetzold, J Weingrill, S Aigrain, R Alonso, A Alapini, J-M Almenara, M Auvergne, A Baglin, P Barge, AS Bonomo, P Bordé, F Bouchy, H Bruntt, S Carpano, WD Cochran, M Deleuil, RF Díaz, S Dreizler, R Dvorak, J Eisloeffel, P Eigmueller, M Endl, A Erikson, S Ferraz-Mello, M Fridlund, J-C Gazzano, N Gibson, M Gillon, P Gondoin, S Grziwa, EW Guenther, T Guillot, M Hartmann, M Havel, G Hébrard, L Jorda, P Kabath, A Léger, A Llebaria, H Lammer, C Lovis, PJ MacQueen, M Mayor, T Mazeh, C Moutou, L Nortmann, A Ofir, M Ollivier, H Parviainen, F Pepe, F Pont, D Queloz, M Rabus, H Rauer, C Régulo, S Renner, R de la Reza, D Rouan, A Santerne, B Samuel, J Schneider, A Shporer, B Stecklum, L Tal-Or, B Tingley, S Udry, G Wuchterl
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A simple method to estimate radial velocity variations due to stellar activity using photometry

(2011)

Authors:

S Aigrain, F Pont, S Zucker
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