K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Smith, Alexis and Csizmadia, Szilard and Gandolfi, D. and Albrecht, S. and Alonso, R. and Barragán, O. and Cabrera Perez, Juan and Cochran, W.D. and Dai, F. and Deeg, H. and Eigmüller, Philipp and Endl, M. and Erikson, A and Fridlund, M. and Fukui, A. and Grziwa, S. and Guenther, E.W. and Hatzes, A.P. and Hidalgo, D. and Hirano, T. and Korth, J. and Kuzuhara, M. and Livingston, J. and Narita, N. and Nespral, D. and Niraula, P. and Nowak, G. and Palle, E. and Pätzold, M. and Persson, C.M. and Prieto-Arranz, J. and Rauer, H and Redfield, S. and Ribas, I. and Van Eylen, V. (2019) K2-295 b and K2-237 b: Two Transiting Hot Jupiters. Acta Astronomica, 69, pp. 135-158. Copernicus Foundation for Polish Astronomy. doi: 10.32023/0001-5237/69.2.3. ISSN 0001-5237.

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Abstract

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.

Item URL in elib:

https://elib.dlr.de/129159/

Document Type:

Article

Title:

K2-295 b and K2-237 b: Two Transiting Hot Jupiters

Authors:

Authors	Institution or Email of Authors	Author's ORCID iD	ORCID Put Code
Smith, Alexis	UNSPECIFIED	https://orcid.org/0000-0002-2386-4341	UNSPECIFIED
Csizmadia, Szilard	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Gandolfi, D.	Dipartimento di Fisica, Universitá di Torino, Via P. Giuria 1, I-10125, Torino, Italy	UNSPECIFIED	UNSPECIFIED
Albrecht, S.	Stellar Astrophysics Centre, Department of Physics and Astronomy, Aarhus University, Ny Munkegade 120, DK-8000 Aarhus C, Denmark	UNSPECIFIED	UNSPECIFIED
Alonso, R.	Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Barragán, O.	Dipartimento di Fisica, Universitá di Torino, Via P. Giuria 1, I-10125, Torino, Italy	UNSPECIFIED	UNSPECIFIED
Cabrera Perez, Juan	UNSPECIFIED	https://orcid.org/0000-0001-6653-5487	UNSPECIFIED
Cochran, W.D.	Department of Astronomy and McDonald Observatory, University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712, USA	UNSPECIFIED	UNSPECIFIED
Dai, F.	Department of Physics and Kavli Institute for Astrophysics and Space Research, Massachusetts Institute of Technology, Cambridge, MA 02139,USA	UNSPECIFIED	UNSPECIFIED
Deeg, H.	Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Eigmüller, Philipp	UNSPECIFIED	https://orcid.org/0000-0003-4096-0594	UNSPECIFIED
Endl, M.	Department of Astronomy and McDonald Observatory, University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712, USA	UNSPECIFIED	UNSPECIFIED
Erikson, A	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Fridlund, M.	Leiden Observatory, Leiden University, 2333CA Leiden, The Netherlands; Chalmers University of Technology, Department of Space, Earth and Environment, Onsala Space Observatory, SE-439 92 Onsala, Sweden; Instituto de Astrofísica de Canarias (IAC), 38205 La	UNSPECIFIED	UNSPECIFIED
Fukui, A.	Subaru Telescope Okayama Branch Office, National Astronomical Observatory of Japan, NINS, 3037-5 Honjo, Kamogata, Asakuchi, Okayama 719-0232, Japan; Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Grziwa, S.	Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany	UNSPECIFIED	UNSPECIFIED
Guenther, E.W.	Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany	UNSPECIFIED	UNSPECIFIED
Hatzes, A.P.	Thüringer Landessternwarte Tautenburg, Sternwarte 5, 07778 Tautenburg, Germany	UNSPECIFIED	UNSPECIFIED
Hidalgo, D.	Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Hirano, T.	Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan	UNSPECIFIED	UNSPECIFIED
Korth, J.	Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany	UNSPECIFIED	UNSPECIFIED
Kuzuhara, M.	Astrobiology Center, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan	UNSPECIFIED	UNSPECIFIED
Livingston, J.	Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan	UNSPECIFIED	UNSPECIFIED
Narita, N.	Department of Astronomy, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan; Astrobiology Center, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan; National Astronomical Observatory of Japan, NINS, 2-21-1 Osawa, Mitaka, Tokyo 181-8588	UNSPECIFIED	UNSPECIFIED
Nespral, D.	Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Niraula, P.	Astronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA	UNSPECIFIED	UNSPECIFIED
Nowak, G.	Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Palle, E.	Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Pätzold, M.	Rheinisches Institut für Umweltforschung an der Universität zu Köln, Aachener Strasse 209, 50931 Köln, Germany	UNSPECIFIED	UNSPECIFIED
Persson, C.M.	Chalmers University of Technology, Department of Space, Earth and Environment, Onsala Space Observatory, SE-439 92 Onsala, Sweden	UNSPECIFIED	UNSPECIFIED
Prieto-Arranz, J.	Instituto de Astrofísica de Canarias (IAC), 38205 La Laguna, Tenerife, Spain; Departamento de Astrofísica, Universidad de La Laguna (ULL), 38206 La Laguna, Tenerife, Spain	UNSPECIFIED	UNSPECIFIED
Rauer, H	UNSPECIFIED	UNSPECIFIED	UNSPECIFIED
Redfield, S.	Astronomy Department and Van Vleck Observatory, Wesleyan University, Middletown, CT 06459, USA	UNSPECIFIED	UNSPECIFIED
Ribas, I.	Institut de Ciéncies de l'Espai (ICE, CSIC), Campus UAB, Can Magrans s/n, 08193 Bellaterra, Spain; Institut d'Estudis Espacials de Catalunya (IEEC), 08034 Barcelona, Spain	UNSPECIFIED	UNSPECIFIED
Van Eylen, V.	Leiden Observatory, Leiden University, 2333CA Leiden, The Netherlands)	UNSPECIFIED	UNSPECIFIED

Date:

2019

Journal or Publication Title:

Acta Astronomica

Refereed publication:

Yes

Open Access:

Yes

Gold Open Access:

In SCOPUS:

Yes

In ISI Web of Science:

Yes

Volume:

DOI:

10.32023/0001-5237/69.2.3

Page Range:

pp. 135-158

Publisher:

Copernicus Foundation for Polish Astronomy

ISSN:

0001-5237

Status:

Published

Keywords:

Planetary systems, Planets and satellites: detection, Planets and satellites: individual: K2-295, K2-237

HGF - Research field:

Aeronautics, Space and Transport

HGF - Program:

Space

HGF - Program Themes:

Space Exploration

DLR - Research area:

Raumfahrt

DLR - Program:

R EW - Space Exploration

DLR - Research theme (Project):

R - Projekt COROT Beteiligung (old)

Location:

Berlin-Adlershof

Institutes and Institutions:

Institute of Planetary Research > Extrasolar Planets and Atmospheres
Institute of Planetary Research > Leitungsbereich PF

Deposited By:

Smith, Dr Alexis M S

Deposited On:

01 Oct 2019 10:13

Last Modified:

30 Jan 2024 13:08

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