SOPHIE velocimetry of Kepler transit candidates IX. KOI-415 b: a long-period, eccentric transiting brown dwarf to an evolved Sun

被引：35
|
作者：
Moutou, C. [1 ]
Bonomo, A. S. [2 ]
Bruno, G. [1 ]
Montagnier, G. [3 ,4 ]
Bouchy, F. [1 ]
Almenara, J. M. [1 ]
Barros, S. C. C. [1 ]
Deleuil, M. [1 ]
Diaz, R. F. [1 ]
Hebrard, G. [3 ,4 ]
Santerne, A. [5 ]
机构：
[1] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
[2] INAF Osservatorio Astrofis Torino, I-10025 Pino Torinese, Italy
[3] Univ Paris 06, UMR CNRS 7095, Inst Astrophys Paris, F-75014 Paris, France
[4] Observ Haute Provence, CNRS OAMP, F-04870 St Michel lObservatoire, France
[5] Univ Porto, Ctr ro Astrofis, P-4150762 Porto, Portugal
来源：
ASTRONOMY & ASTROPHYSICS | 2013年 / 558卷
基金：
欧洲研究理事会;
关键词：
planetary systems; techniques: photometric; techniques: spectroscopic; techniques: radial velocities; stars: brown dwarfs; stars: individual: KIC6289650; EXTRASOLAR GIANT PLANETS; CHAIN MONTE-CARLO; LOW-MASS STARS; EVOLUTIONARY MODELS; COROT; TEMPERATURES; PARAMETERS; COMPANION; STELLAR; NOISE;
D O I：
10.1051/0004-6361/201322201
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the discovery of a long-period brown-dwarf transiting companion of the solar-type star KOI-415. The transits were detected by the Kepler space telescope. We conducted Doppler measurements using the SOPHIE spectrograph at the Observatoire de Haute-Provence. The photometric and spectroscopic signals allow us to characterize a 62.14 +/- 2.69 M-Jup brown-dwarf companion of an evolved 0.94 +/- 0.06 M-circle dot star in a highly eccentric orbit of P = 166.78805 +/- 0.00022 days and e = 0.698 +/- 0.002. The radius of KOI-415 b is 0.79(-0.07)(+0.12) R-Jup, a value that is compatible with theoretical predictions for a 10 Gyr, low-metallicity and non-irradiated object.
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页数：5
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