K2-232 b: a transiting warm Saturn on an eccentric P = 11.2 d orbit around a V = 9.9 star
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We report the discovery of K2-232 b using photometric data of the Kepler K2 satellite coupled with ground-based spectroscopic observations. K2-232 b has a mass of M-P = 0.397 +/- 0.037 M-J, a radius of R-P = 1.00 +/- 0.020 R-J, and a moderately low equilibrium temperature of T-eq = 1030 +/- 15K due to its relatively large star-planet separation of a = 0.1036 au. K2-232 b orbits its bright (V = 9.9) late F-type host star in an eccentric orbit (e = 0.258 +/- 0.025) every 11.2 d, and is one of only four well-characterized warm Jupiters having host stars brighter than V = 10. We estimate a heavy element content of 20 +/- 7M(circle plus) for K2-232 b, which is consistent with standard models of giant planet formation. The bright host star of K2-232 b makes this system a well-suited target for detailed follow-up observations that will aid in the study of the atmospheres and orbital evolution of giant planets at moderate separations from their host stars.
Artículo de publicación ISI
Quote ItemMonthly Notices of the Royal Astronomical Society Volumen: 477 Número: 2 Páginas: 2572-2581
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