Prof Suzanne Aigrain: Publications

Stellar_flare_hits_HD_189733_b_(artist's_impression)

This artist's impression shows the hot Jupiter HD 189733b, as it passes in front of its parent star, as the latter is flaring, driving material away from the planet. The escaping atmosphere is seen silhouetted against the starlight. The surface of the star, which is around 80% the mass of the Sun, is based on observations of the Sun from NASA's Solar Dynamics Observatory.

Credit: NASA, ESA, L. Calçada, Solar Dynamics Observatory

Transiting exoplanets from the CoRoT space mission VIII. CoRoT-7b: the first super-Earth with measured radius

ASTRONOMY & ASTROPHYSICS 506:1 (2009) 287-302

Authors:

A Leger, D Rouan, J Schneider, P Barge, M Fridlund, B Samuel, M Ollivier, E Guenther, M Deleuil, HJ Deeg, M Auvergne, R Alonso, S Aigrain, A Alapini, JM Almenara, A Baglin, M Barbieri, H Bruntt, P Borde, F Bouchy, J Cabrera, C Catala, L Carone, S Carpano, Sz Csizmadia, R Dvorak, A Erikson, S Ferraz-Mello, B Foing, F Fressin, D Gandolfi, M Gillon, Ph Gondoin, O Grasset, T Guillot, A Hatzes, G Hebrard, L Jorda, H Lammer, A Llebaria, B Loeillet, M Mayor, T Mazeh, C Moutou, M Paetzold, F Pont, D Queloz, H Rauer, S Renner, R Samadi, A Shporer, Ch Sotin, B Tingley, G Wuchterl, M Adda, P Agogu, T Appourchaux, H Ballans, P Baron, T Beaufort, R Bellenger, R Berlin, P Bernardi, D Blouin, F Baudin, P Bodin, L Boisnard, L Boit, F Bonneau, S Borzeix, R Briet, J-T Buey, B Butler, D Cailleau, R Cautain, P-Y Chabaud, S Chaintreuil, F Chiavassa, V Costes, V Cuna Parrho, F De Oliveira Fialho, M Decaudin, J-M Defise, S Djalal, G Epstein, G-E Exil, C Faure, T Fenouillet, A Gaboriaud, A Gallic, P Gamet, P Gavalda, E Grolleau, R Gruneisen, L Gueguen, V Guis, V Guivarc'h, P Guterman, D Hallouard, J Hasiba, F Heuripeau, G Huntzinger, H Hustaix, C Imad, C Imbert, B Johlander, M Jouret, P Journoud, F Karioty, L Kerjean, V Lafaille, L Lafond, T Lam-Trong, P Landiech, V Lapeyrere, T Larque, P Laudet, N Lautier, H Lecann, L Lefevre, B Leruyet, P Levacher, A Magnan, E Mazy, F Mertens, J-M Mesnager, J-C Meunier, J-P Michel, W Monjoin, D Naudet, K Nguyen-Kim, J-L Orcesi, H Ottacher, R Perez, G Peter, P Plasson, J-Y Plesseria, B Pontet, A Pradines, C Quentin, J-L Reynaud, G Rolland, F Rollenhagen, R Romagnan, N Russ, R Schmidt, N Schwartz, I Sebbag, G Sedes, H Smit, MB Steller, W Sunter, C Surace, M Tello, D Tiphene, P Toulouse, B Ulmer, O Vandermarcq, E Vergnault, A Vuillemin, P Zanatta

Modelling solar-like variability for the detection of Earth-like planetary transits. II) Performance of the three-spot modelling, harmonic function fitting, iterative non-linear filtering and sliding boxcar filtering

(2008)

Authors:

AS Bonomo, S Aigrain, P Bordé, AF Lanza

Transiting exoplanets from the CoRoT space mission: VI. CoRoT-Exo-3b: The first secure inhabitant of the brown-dwarf desert

Astronomy and Astrophysics 491:3 (2008) 889-897

Authors:

M Deleuil, HJ Deeg, R Alonso, F Bouchy, D Rouan, M Auvergne, A Baglin, S Aigrain, JM Almenara, M Barbieri, P Barge, H Bruntt, P Bordé, A Collier Cameron, S Csizmadia, R De La Reza, R Dvorak, A Erikson, M Fridlund, D Gandolfi, M Gillon, E Guenther, T Guillot, A Hatzes, G Hébrard, L Jorda, H Lammer, A Léger, A Llebaria, B Loeillet, M Mayor, T Mazeh, C Moutou, M Ollivier, M Pätzold, F Pont, D Queloz, H Rauer, J Schneider, A Shporer, G Wuchterl, S Zucker

Abstract:

Context. The CoRoT space mission routinely provides high-precision photometric measurements of thousands of stars that have been continuously observed for months.Aims. The discovery and characterization of the first very massive transiting planetary companion with a short orbital period is reported.Methods. A series of 34 transits was detected in the CoRoT light curve of an F3V star, observed from May to October 2007 for 152 days. The radius was accurately determined and the mass derived for this new transiting, thanks to the combined analysis of the light curve and complementary ground-based observations: high-precision radial-velocity measurements, on-off photometry, and high signal-to-noise spectroscopic observations.Results. CoRoT-Exo-3b has a radius of 1.01 ± 0.07Jup and transits around its F3-type primary every 4.26 days in a synchronous orbit. Its mass of 21.66 ± 1.0 MJup, density of 26.4 ± 5.6 g cm^-3, and surface gravity of log g = 4.72 clearly distinguish it from the regular close-in planet population, making it the most intriguing transiting substellar object discovered so far. Conclusions. With the current data, the nature of CoRoT-Exo-3b is ambiguous, as it could either be a low-mass brown-dwarf or a member of a new class of "superplanets". Its discovery may help constrain the evolution of close-in planets and brown-dwarfs better. Finally, CoRoT-Exo-3b confirms the trend that massive transiting giant planets (M ≥ 4 MJup) are found preferentially around more massive stars than the Sun. © 2008 ESO.

Magnetic activity in the photosphere of CoRoT-Exo-2a. Active longitudes and short-term spot cycle in a young Sun-like star

(2008)

Authors:

AF Lanza, I Pagano, G Leto, S Messina, S Aigrain, R Alonso, M Auvergne, A Baglin, P Barge, AS Bonomo, P Boumier, A Collier Cameron, M Comparato, G Cutispoto, JR De Medeiros, B Foing, A Kaiser, C Moutou, PS Parihar, AVR Silva, WW Weiss

The Monitor project: Rotation periods of low-mass stars in M50

(2008)

Authors:

Jonathan Irwin, Suzanne Aigrain, Jerome Bouvier, Leslie Hebb, Simon Hodgkin, Mike Irwin, Estelle Moraux

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