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          Institute: MPI für Astronomie     Collection: Publikationen_mpia     Display Documents

ID: 731580.0, MPI für Astronomie / Publikationen_mpia
Two hot Jupiters from K2 Campaign 4
Authors:Johnson, M. C.; Gandolfi, D.; Fridlund, M.; Csizmadia, S.; Endl, M.; Cabrera, J.; Cochran, W. D.; Deeg, H. J.; Grziwa, S.; Ramírez, I.; Hatzes, A. P.; Eigmüller, P.; Barragán, O.; Erikson, A.; Guenther, E. W.; Korth, J.; Kuutma, T.; Nespral, D.; Pätzold, M.; Palle, E.; Prieto-Arranz, J.; Rauer, H.; Saario, J.
Date of Publication (YYYY-MM-DD):2016
Title of Journal:The Astronomical Journal
Issue / Number:6
Start Page:id. 171 (9 pp)
Audience:Not Specified
Abstract / Description:We confirm the planetary nature of two transiting hot Jupiters discovered by the Kepler spacecraft’s K2 extended mission in its Campaign 4, using precise radial velocity measurements from FIES@NOT, HARPS-N@TNG, and the coudé spectrograph on the McDonald Observatory 2.7 m telescope. K2-29 b (EPIC 211089792b) transits a K1V star with a period of 3.2589263 ± 0.0000015 days; its orbit is slightly eccentric (e={0.084}-0.023+0.032). It has a radius of {R}P={1.000}-0.067+0.071 RJ and a mass of {M}P={0.613}-0.026+0.027 MJ. Its host star exhibits significant rotational variability, and we measure a rotation period of {P}{rot}=10.777+/- 0.031 days. K2-30 b (EPIC 210957318 b) transits a G6V star with a period of 4.098503 ± 0.000011 days. It has a radius of {R}P={1.039}-0.051+0.050 RJ and a mass of {M}P={0.579}-0.027+0.028 MJ. The star has a low metallicity for a hot Jupiter host, [{Fe}/{{H}}]=-0.15+/- 0.05.
Free Keywords:planets and satellites: detection; planets and satellites: individual: EPIC 211089792 b (K2-29 b; EPIC 210957318 b (K2-30 b; stars: fundamental parameters; stars: rotation
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astronomie
Identifiers:ISSN:0004-6256 %R 10.3847/0004-6256/151/6/171
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