TWO HOT JUPITERS FROM K2 CAMPAIGN 4
Artikel i vetenskaplig tidskrift, 2016

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 coude 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) R-J and a mass of M-p = 0.6131-0.613-0.026 M-J. Its host star exhibits significant rotational variability, and we measure a rotation period of pot = 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) Ri and a mass of M-p = 0.579(-0.027)(+0.028) M-J. The star has a low metallicity for a hot Jupiter host, [Fe/H] = 0.15 +/- 0.05.

systems

planetary transit candidates

eccentricity

stars

1981

astrophysics and space science

stars: fundamental parameters

solar

v80

mission

planets and satellites: detection

stars: rotation

kepler

field

EPIC 210957318 b (K2-30 b))

tidal evolution

raizys v

planets and satellites: individual (EPIC 211089792 b (K2-29 b)

Astronomy & Astrophysics

exoplanets

p353

Författare

M. C. Johnson

The University of Texas at Austin

D. Gandolfi

Landessternwarte Heidelberg

Universita degli Studi di Torino

Malcolm Fridlund

Chalmers, Rymd- och geovetenskap, Radioastronomi och astrofysik

S. Csizmadia

Deutsches Zentrum fur Luft- Und Raumfahrt

M. Endl

The University of Texas at Austin

J. Cabrera

Deutsches Zentrum fur Luft- Und Raumfahrt

W. D. Cochran

The University of Texas at Austin

H. J. Deeg

Universidad de la Laguna

Instituto Astrofisico de Canarias

S. Grziwa

Universität zu Köln

I. Ramirez

The University of Texas at Austin

A. Hatzes

Thüringer Landessternwarte Tautenburg

Philipp Eigmüller

Deutsches Zentrum fur Luft- Und Raumfahrt

O. Barragan

Universita degli Studi di Torino

A. Erikson

Deutsches Zentrum fur Luft- Und Raumfahrt

E. W. Guenther

Thüringer Landessternwarte Tautenburg

J. Korth

Universität zu Köln

T. Kuutma

Nordic Optical Telescope

D. Nespral

Universidad de la Laguna

Instituto Astrofisico de Canarias

M. Patzold

Universität zu Köln

E. Palle

Instituto Astrofisico de Canarias

Universidad de la Laguna

J. Prieto-Arranz

Universidad de la Laguna

Instituto Astrofisico de Canarias

H. Rauer

Technische Universität Berlin

Deutsches Zentrum fur Luft- Und Raumfahrt

J. Saario

Nordic Optical Telescope

Astronomical Journal

0004-6256 (ISSN) 1538-3881 (eISSN)

Vol. 151 171

Ämneskategorier

Astronomi, astrofysik och kosmologi

DOI

10.3847/0004-6256/151/6/171