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K2-295 B and K2-237 B : Two transiting hot Jupiters

Smith, A. M.S. ; Csizmadia, S. ; Gandolfi, D. ; Albrecht, S. ; Alonso, R. ; Barragán, O. ; Cabrera, J. ; Cochran, W. D. ; Dai, F. and Deeg, H. , et al. (2019) In Acta Astronomica 69(2). p.135-158
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.

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publishing date
type
Contribution to journal
publication status
published
keywords
Planetary systems, Planets, Planets and satellites: detection, Satellites: individual: K2-295, K2-237
in
Acta Astronomica
volume
69
issue
2
pages
24 pages
publisher
Copernicus GmbH
external identifiers
  • scopus:85070419440
ISSN
0001-5237
DOI
10.32023/0001-5237/69.2.3
language
English
LU publication?
no
additional info
Publisher Copyright: © 2019 Copernicus Foundation for Polish Astronomy. All rights reserved.
id
8354d60f-aefe-4192-8bac-9636796add3d
date added to LUP
2023-02-02 10:21:02
date last changed
2023-02-27 13:02:22
@article{8354d60f-aefe-4192-8bac-9636796add3d,
  abstract     = {{<p>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.</p>}},
  author       = {{Smith, A. M.S. and Csizmadia, S. and Gandolfi, D. and Albrecht, S. and Alonso, R. and Barragán, O. and Cabrera, J. and Cochran, W. D. and Dai, F. and Deeg, H. and Eigmüller, P. 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.}},
  issn         = {{0001-5237}},
  keywords     = {{Planetary systems; Planets; Planets and satellites: detection; Satellites: individual: K2-295, K2-237}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{135--158}},
  publisher    = {{Copernicus GmbH}},
  series       = {{Acta Astronomica}},
  title        = {{K2-295 B and K2-237 B : Two transiting hot Jupiters}},
  url          = {{http://dx.doi.org/10.32023/0001-5237/69.2.3}},
  doi          = {{10.32023/0001-5237/69.2.3}},
  volume       = {{69}},
  year         = {{2019}},
}