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

German Aerospace Center (DLR)

Sz. Csizmadia

German Aerospace Center (DLR)

D. Gandolfi

University of Turin

S. Albrecht

Aarhus University

R. Alonso

University of La Laguna

IAC

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

IAC

University of La Laguna

Ph. Eigmüller

Technische Universität Berlin

German Aerospace Center (DLR)

M. Endl

The University of Texas at Austin

A. Erikson

German Aerospace Center (DLR)

Malcolm Fridlund

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

A. Fukui

National Institutes of Natural Sciences

IAC

S. Grziwa

University of Cologne

E. W. Guenther

Thüringer Landessternwarte Tautenburg

A. P. Hatzes

Thüringer Landessternwarte Tautenburg

D. Hidalgo

University of La Laguna

IAC

T. Hirano

Tokyo Institute of Technology

J. Korth

University of Cologne

M. Kuzuhara

National Institutes of Natural Sciences

J. Livingston

University of Tokyo

N. Narita

National Institutes of Natural Sciences

IAC

University of Tokyo

D. Nespral

IAC

University of La Laguna

P. Niraula

Wesleyan University

G. Nowak

University of La Laguna

IAC

E. Palle

IAC

University of La Laguna

M. Pätzold

University of Cologne

Carina Persson

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

J. Prieto-Arranz

IAC

University of La Laguna

H. Rauer

Freie Universität Berlin

German Aerospace Center (DLR)

Technische Universität Berlin

S. Redfield

Wesleyan University

I Ribas

Institute of Space Studies of Catalonia (IEEC)

Institute of Space Sciences (ICE) - CSIC

V. Van Eylen

Leiden University

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

5/14/2020