Two Hot Jupiters from K2 Campaign 4

Bibcode
2016AJ....151..171J
DOI
10.3847/0004-6256/151/6/171
Johnson, M. C.; Gandolfi, Davide; Fridlund, Malcolm; Csizmadia, Szilard; Endl, Michael; Cabrera, Juan; Cochran, William D.; Deeg, H. J.; Grziwa, Sascha; Ramírez, Ivan; Hatzes, Artie P.; Eigmüller, Philipp; Barragán, Oscar; Erikson, Anders; Guenther, Eike W.; Korth, Judith; Kuutma, Teet; Nespral, D.; Pätzold, Martin; Palle, E.; Prieto-Arranz, J.; Rauer, Heike; Saario, Joonas
Bibliographical reference

The Astronomical Journal, Volume 151, Issue 6, article id. 171, 9 pp. (2016).

Advertised on:
6
2016
Number of authors
23
IAC number of authors
4
Citations
28
Refereed citations
27
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.
Type
Refereed

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