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.

K2-237

Planetary systems – Planets and satellites: detection – Planets and satellites: individ- ual: K2-295

Author

A.M.S. Smith

Sz. Csizmadia

D. Gandolfi

S. Albrecht

R. Alonso

O. Barragán

J. Cabrera

W. D. Cochran

F. Dai

H. Deeg

Ph. Eigmüller

M. Endl

A. Erikson

Malcolm Fridlund

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics

A. Fukui

S. Grziwa

E. W. Guenther

A. P. Hatzes

D. Hidalgo

T. Hirano

J. Korth

M. Kuzuhara

J. Livingston

N. Narita

D. Nespral

P. Niraula

G. Nowak

E. Palle

M. Pätzold

Carina Persson

Chalmers, Space, Earth and Environment, Astronomy and Plasmaphysics, Galactic Astrophysics

J. Prieto-Arranz

H. Rauer

S. Redfield

I Ribas

V. Van Eylen

Acta Astronomica

0001-5237 (ISSN)

Vol. 69 135-158

Exoplanets from space – CHEOPS and PLATO, ESA’s next two projects

Swedish National Space Board, 2017-01-01 -- 2022-12-31.

Subject Categories

Astronomy, Astrophysics and Cosmology

Roots

Basic sciences

DOI

10.32023/0001-5237/69.2.3

More information

Latest update

8/26/2019