Exoplanets and Stellar Physics

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Transiting exoplanets from the CoRoT space mission. XV. CoRoT-15b: a brown dwarf transiting companion

(2010)

Authors:

F Bouchy, M Deleuil, T Guillot, S Aigrain, L Carone, WD Cochran
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Transiting exoplanets from the CoRoT space mission XIV. CoRoT-11b: a transiting massive "hot-Jupiter" in a prograde orbit around a rapidly rotating F-type star

(2010)

Authors:

D Gandolfi, G Hébrard, R Alonso, M Deleuil, EW Guenther, M Fridlund, M Endl, P Eigmüller, Sz Csizmadia, M Havel, S Aigrain, M Auvergne, A Baglin, P Barge, AS Bonomo, P Bordé, F Bouchy, H Bruntt, J Cabrera, S Carpano, L Carone, WD Cochran, HJ Deeg, R Dvorak, J Eislöffel, A Erikson, S Ferraz-Mello, J-C Gazzano, NP Gibson, M Gillon, P Gondoin, T Guillot, M Hartmann, A Hatzes, L Jorda, P Kabath, A Léger, A Llebaria, H Lammer, PJ MacQueen, M Mayor, T Mazeh, C Moutou, M Ollivier, M Pätzold, F Pepe, D Queloz, H Rauer, D Rouan, B Samuel, J Schneider, B Stecklum, B Tingley, S Udry, G Wuchterl
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The Gemini Nici Planet-Finding Campaign: Discovery of a close substellar companion to the young debris disk star PZ TEL

Astrophysical Journal Letters 720:1 PART 2 (2010)

Authors:

BA Biller, MC Liu, Z Wahhaj, EL Nielsen, LM Close, TJ Dupuy, TL Hayward, A Burrows, M Chun, C Ftaclas, F Clarke, M Hartung, J Males, IN Reid, EL Shkolnik, A Skemer, M Tecza, N Thatte, SHP Alencar, P Artymowicz, A Boss, E De Gouveia Dal Pino, J Gregorio-Hetem, S Ida, MJ Kuchner, D Lin, D Toomey

Abstract:

We report the discovery of a tight substellar companion to the young solar analog PZ Tel, a member of the β Pic moving group observed with high-contrast adaptive optics imaging as part of the Gemini Near-Infrared Coronagraphic Imager Planet-Finding Campaign. The companion was detected at a projected separation of 16.4 ± 1.0 AU (0. ′33 ± 0. ′01) in 2009 April. Second-epoch observations in 2010 May demonstrate that the companion is physically associated and shows significant orbital motion. Monte Carlo modeling constrains the orbit of PZ Tel B to eccentricities >0.6. The near-IR colors of PZ Tel B indicate a spectral type of M7 ± 2 and thus this object will be a new benchmark companion for studies of ultracool, low-gravity photospheres. Adopting an age of 12+8-4 Myr for the system, we estimate a mass of 36 ± 6 MJup based on the Lyon/DUSTY evolutionary models. PZ Tel B is one of the few young substellar companions directly imaged at orbital separations similar to those of giant planets in our own solar system. Additionally, the primary star PZ Tel A shows a 70 μm emission excess, evidence for a significant quantity of circumstellar dust that has not been disrupted by the orbitalmotion of the companion. © 2010. The American Astronomical Society. All rights reserved.
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MML 53: a new low-mass, pre-main sequence eclipsing binary in the Upper Centarus-Lupus Region discovered by SuperWASP

(2010)

Authors:

L Hebb, HC Stempels, S Aigrain, A Collier-Cameron, ST Hodgkin, JM Irwin, PFL Maxted, D Pollacco, RA Street, DM Wilson, KG Stassun
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Re-assessing the radial-velocity evidence for planets around CoRoT-7

(2010)

Authors:

Frederic Pont, Suzanne Aigrain, Shay Zucker
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