K2-295 b and K2-237 b: Two Transiting Hot Jupiters
Journal article, 2019
We report the discovery from K2 of two transiting hot Jupiter systems. K2-295 (observed in Campaign 8) is a K5 dwarf which hosts a planet slightly smaller than Jupiter, orbiting with a period of 4.0 d. We have made an independent discovery of K2-237 b (Campaign 11), which orbits an F9 dwarf every 2.2 d and has an inflated radius 60–70% larger than that of Jupiter. We use high-precision radial velocity measurements, obtained using the HARPS and FIES spectrographs, to measure the planetary masses. We find that K2-295 b has a similar mass to Saturn, while K2-237 b is a little more massive than Jupiter.
Planetary systems – Planets and satellites: detection – Planets and satellites: individ- ual: K2-295
K2-237
Author
A.M.S. Smith
German Aerospace Center (DLR)
Sz. Csizmadia
German Aerospace Center (DLR)
D. Gandolfi
University of Turin
S. Albrecht
Aarhus University
R. Alonso
Instituto de Astrofísica de Canarias
University of La Laguna
O. Barragán
University of Turin
J. Cabrera
German Aerospace Center (DLR)
W. D. Cochran
The University of Texas at Austin
F. Dai
Massachusetts Institute of Technology (MIT)
H. Deeg
Instituto de Astrofísica de Canarias
University of La Laguna
Ph. Eigmüller
German Aerospace Center (DLR)
Technische Universität Berlin
M. Endl
The University of Texas at Austin
A. Erikson
German Aerospace Center (DLR)
Malcolm Fridlund
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
A. Fukui
National Institutes of Natural Sciences
Instituto de Astrofísica de Canarias
S. Grziwa
University of Cologne
E. W. Guenther
Thüringer Landessternwarte Tautenburg
A. P. Hatzes
Thüringer Landessternwarte Tautenburg
D. Hidalgo
Instituto de Astrofísica de Canarias
University of La Laguna
T. Hirano
Tokyo Institute of Technology
Judith Korth
University of Cologne
M. Kuzuhara
National Institutes of Natural Sciences
J. Livingston
University of Tokyo
N. Narita
National Institutes of Natural Sciences
Instituto de Astrofísica de Canarias
University of Tokyo
D. Nespral
University of La Laguna
Instituto de Astrofísica de Canarias
P. Niraula
Wesleyan University
G. Nowak
University of La Laguna
Instituto de Astrofísica de Canarias
E. Palle
Instituto de Astrofísica de Canarias
University of La Laguna
M. Pätzold
University of Cologne
Carina Persson
Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics
J. Prieto-Arranz
University of La Laguna
Instituto de Astrofísica de Canarias
H. Rauer
German Aerospace Center (DLR)
Technische Universität Berlin
Freie Universität Berlin
S. Redfield
Wesleyan University
I Ribas
Institute of Space Sciences (ICE) - CSIC
Institute of Space Studies of Catalonia (IEEC)
V. Van Eylen
Leiden University
Acta Astronomica
0001-5237 (ISSN)
Vol. 69 2 135-158Exoplanets from space – CHEOPS and PLATO, ESA’s next two projects
Swedish National Space Board (174/18), 2017-01-01 -- 2022-12-31.
Subject Categories (SSIF 2011)
Astronomy, Astrophysics and Cosmology
Roots
Basic sciences
DOI
10.32023/0001-5237/69.2.3