2015A&A...573L...6O


Query : 2015A&A...573L...6O

2015A&A...573L...6O - Astronomy and Astrophysics, volume 573, L6-6 (2015/1-1)

Kepler-432 b: a massive warm Jupiter in a 52-day eccentric orbit transiting a giant star.

ORTIZ M., GANDOLFI D., REFFERT S., QUIRRENBACH A., DEEG H.J., KARJALAINEN R., MONTANES-RODRIGUEZ P., NESPRAL D., NOWAK G., OSORIO Y. and PALLE E.

Abstract (from CDS):

We study the Kepler object Kepler-432, an evolved star ascending the red giant branch. By deriving precise radial velocities from multi-epoch high-resolution spectra of Kepler-432 taken with the CAFE spectrograph at the 2.2m telescope of Calar Alto Observatory and the FIES spectrograph at the Nordic Optical Telescope of Roque de Los Muchachos Observatory, we confirm the planetary nature of the object Kepler-432 b, which has a transit period of 52 days. We find a planetary mass of Mp=5.84±0.05MJup and a high eccentricity of e=0.478±0.004. With a semi-major axis of a=0.303±0.007AU, Kepler-432 b is the first bona fide warm Jupiter detected to transit a giant star. We also find a radial velocity linear trend of {dot}(γ)=0.44±0.04/ms/d, which suggests the presence of a third object in the system. Current models of planetary evolution in the post-main-sequence phase predict that Kepler-432 b will be most likely engulfed by its host star before the latter reaches the tip of the red giant branch.

Abstract Copyright:

Journal keyword(s): planets and satellites: detection - planets and satellites: fundamental parameters - planets and satellites: gaseous planets - planets and satellites: general - stars: individual: Kepler-432 (KOI-1299, KIC 10864656)

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HD 121056b Pl 13 53 52.0609887338 -35 18 51.680937317           ~ 6 0
2 HD 121056 RG* 13 53 52.0613118474 -35 18 51.691786471   7.21 6.19     K0III 67 0
3 * 37 Lib PM* 15 34 10.7024841438 -10 03 52.317750492 6.48 5.63 4.62 3.85 3.33 K1III-IV 168 0
4 Kepler-91b Pl 19 02 41.4979092591 +44 07 00.239792240           ~ 72 1
5 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 471 0
6 Kepler-432 RG* 19 33 07.7290058280 +48 17 09.147604308           ~ 66 0
7 Kepler-432b Pl 19 33 07.7292128625 +48 17 09.145380998           ~ 45 0

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2022.08.10-19:22:16

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