Sign on

SAO/NASA ADS Astronomy Abstract Service

· Find Similar Abstracts (with default settings below)
· Electronic Refereed Journal Article (HTML)
· Full Refereed Journal Article (PDF/Postscript)
· arXiv e-print (arXiv:1106.3225)
· On-line Data
· References in the article
· Citations to the Article (63) (Citation History)
· Refereed Citations to the Article
· SIMBAD Objects (36)
· Associated Articles
· Also-Read Articles (Reads History)
·
· Translate This Page
Title:
SOPHIE velocimetry of Kepler transit candidates. III. KOI-423b: an 18 MJup transiting companion around an F7IV star
Authors:
Bouchy, F.; Bonomo, A. S.; Santerne, A.; Moutou, C.; Deleuil, M.; Díaz, R. F.; Eggenberger, A.; Ehrenreich, D.; Gry, C.; Guillot, T.; Havel, M.; Hébrard, G.; Udry, S.
Affiliation:
AA(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014, Paris, France ; Observatoire de Haute-Provence, Université d'Aix-Marseille & CNRS, 04670 Saint-Michel, l'Observatoire, France), AB(Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille, CNRS, 38 rue Frédéric Joliot-Curie, 13388, Marseille, France), AC(Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille, CNRS, 38 rue Frédéric Joliot-Curie, 13388, Marseille, France), AD(Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille, CNRS, 38 rue Frédéric Joliot-Curie, 13388, Marseille, France), AE(Laboratoire d'Astrophysique de Marseille, Université Aix-Marseille, CNRS, 38 rue Frédéric Joliot-Curie, 13388, Marseille, France), AF(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014, Paris, France; Observatoire de Haute-Provence, Université d'Aix-Marseille & CNRS, 04670 Saint-Michel, l'Observatoire, France), AG(UJF-Grenoble 1/CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble, UMR 5274, 38041, Grenoble, France), AH(UJF-Grenoble 1/CNRS-INSU, Institut de Planétologie et d'Astrophysique de Grenoble, UMR 5274, 38041, Grenoble, France), AI(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014, Paris, France), AJ(Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France), AK(Université de Nice-Sophia Antipolis, CNRS UMR 6202, Observatoire de la Côte d'Azur, BP 4229, 06304, Nice Cedex 4, France), AL(Institut d'Astrophysique de Paris, UMR7095 CNRS, Université Pierre & Marie Curie, 98bis boulevard Arago, 75014, Paris, France; Observatoire de Haute-Provence, Université d'Aix-Marseille & CNRS, 04670 Saint-Michel, l'Observatoire, France), AM(Observatoire de Genève, Université de Genève, 51 Ch. des Maillettes, 1290, Sauverny, Switzerland)
Publication:
Astronomy & Astrophysics, Volume 533, id.A83, 9 pp. (A&A Homepage)
Publication Date:
09/2011
Origin:
EDP Sciences
Astronomy Keywords:
planetary systems, brown dwarfs, binaries: eclipsing, techniques: photometric, techniques: radial velocities, techniques: spectroscopic
DOI:
10.1051/0004-6361/201117095
Bibliographic Code:
2011A&A...533A..83B

Abstract

We report the strategy and results of our radial velocity follow-up campaign with the SOPHIE spectrograph (1.93-m OHP) of four transiting planetary candidates discovered by the Kepler space mission. We discuss the selection of the candidates KOI-428, KOI-410, KOI-552, and KOI-423. KOI-428 was established as a hot Jupiter transiting the largest and the most evolved star discovered so far and is described by Santerne et al. (2011, A&A, 528, A63). KOI-410 does not present radial velocity change greater than 120 m s-1, which allows us to exclude at 3sigma a transiting companion heavier than 3.4 MJup. KOI-552b appears to be a transiting low-mass star with a mass ratio of 0.15. KOI-423b is a new transiting companion in the overlapping region between massive planets and brown dwarfs. With a radius of 1.22 ± 0.11 RJup and a mass of 18.0 ± 0.92 MJup, KOI-423b is orbiting an F7IV star with a period of 21.0874 ± 0.0002 days and an eccentricity of 0.12 ± 0.02. From the four selected Kepler candidates, at least three of them have a Jupiter-size transiting companion, but two of them are not in the mass domain of Jupiter-like planets. KOI-423b and KOI-522b are members of a growing population of known massive companions orbiting close to an F-type star. This population currently appears to be absent around G-type stars, possibly due to their rapid braking and the engulfment of their companions by tidal decay.

Based on observations made with the 1.93-m telescope at the Observatoire de Haute-Provence (CNRS), France.

Associated Articles

Part  1     Part  2     Part  3     Part  4     Part  5     Part  6     Part  7     Part  8     Part  9     Part 10     Part 11     Part 12     Part 13     Part 14    

Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)

Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints