2014A&A...561L...1B


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.15CEST12:02:39

2014A&A...561L...1B - Astronomy and Astrophysics, volume 561, L1-1 (2014/1-1)

SOPHIE velocimetry of Kepler transit candidates. X. KOI-142c: first radial velocity confirmation of a non-transiting exoplanet discovered by transit timing.

BARROS S.C.C., DIAZ R.F., SANTERNE A., BRUNO G., DELEUIL M., ALMENARA J.-M., BONOMO A.S., BOUCHY F., DAMIANI C., HEBRARD G., MONTAGNIER G. and MOUTOU C.

Abstract (from CDS):

The exoplanet KOI-142b (Kepler-88b) shows transit timing variations (TTVs) with a semi-amplitude of ∼12h, which earned it the nickname ``king of transit variations''. Only the transit of planet b was detected in the Kepler data with an orbital period of ∼10.92days and a radius of ∼0.36 RJup. The TTVs together with the transit duration variations of KOI-142b were analysed recently, finding a unique solution for a companion-perturbing planet. An outer non-transiting companion was predicted, KOI-142c, with a mass of 0.626±0.03 MJup and a period of 22.3397+0.0021–0.0018days, which is close to the 2:1 mean-motion resonance with the inner transiting planet. We report an independent confirmation of KOI-142c using radial velocity observations with the SOPHIE spectrograph at the Observatoire de Haute-Provence. We derive an orbital period of 22.10 ±0.25days and a minimum planetary mass of 0.76+0.320.16MJup, both in good agreement with the predictions by previous transit timing analysis. Therefore, this is the first radial velocity confirmation of a non-transiting planet discovered with TTVs, providing an independent validation of the TTVs technique.

Abstract Copyright:

Journal keyword(s): planetary systems - stars: fundamental parameters - techniques: spectroscopic - techniques: radial velocities - stars: individual: KIC5446285 - stars: individual: Kepler-88

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 Kepler-9 Ro* 19 02 17.7544105084 +38 24 03.177247136     13.9 14.09   G2 152 4
2 KOI-872 Ro* 19 17 04.4928887955 +42 36 15.040862283           ~ 62 4
3 KOI-142 Ro* 19 24 35.5431466733 +40 40 09.809821705           G8IV 47 3
4 KOI-142.01 Pl 19 24 35.5431466733 +40 40 09.809821705           ~ 35 1
5 Kepler-88c Pl 19 24 35.5431466733 +40 40 09.809821705           ~ 10 1
6 * sig Dra PM* 19 32 21.5902990 +69 39 40.234737 5.860 5.460 4.680 4.04 3.63 K0V 569 0
7 KOI-94 * 19 49 19.9344504805 +41 53 28.005888625           ~ 97 3
8 Kepler-89c Pl 19 49 19.9344504805 +41 53 28.005888625           ~ 36 1
9 Kepler-89d Pl 19 49 19.9344504805 +41 53 28.005888625           ~ 53 1
10 Kepler-89e Pl 19 49 19.9344504805 +41 53 28.005888625           ~ 37 1

    Equat.    Gal    SGal    Ecl

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2019.10.15-12:02:39

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