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

A. M.S. Smith; S. Csizmadia; D. Gandolfi; S. Albrecht; R. Alonso; O. Barragán; J. Cabrera; W. D. Cochran; F. Dai; H. Deeg; P. Eigmüller; M. Endl; A. Erikson; M. Fridlund; 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; C. M. Persson; J. Prieto-Arranz; H. Rauer; S. Redfield; I. Ribas; V. Van Eylen

doi:10.32023/0001-5237/69.2.3

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

A. M.S. Smith, S. Csizmadia, D. Gandolfi, S. Albrecht, R. Alonso, O. Barragán, J. Cabrera, W. D. Cochran, F. Dai, H. Deeg, P. Eigmüller, M. Endl, A. Erikson, M. Fridlund, A. Fukui, S. Grziwa, E. W. Guenther, A. P. Hatzes, D. Hidalgo, T. HiranoJ. Korth, M. Kuzuhara, J. Livingston, N. Narita, D. Nespral, P. Niraula, G. Nowak, E. Palle, M. Pätzold, C. M. Persson, J. Prieto-Arranz, H. Rauer, S. Redfield, I. Ribas, V. Van Eylen

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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.

Original language	English
Pages (from-to)	135-158
Number of pages	24
Journal	Acta Astronomica
Volume	69
Issue number	2
DOIs	https://doi.org/10.32023/0001-5237/69.2.3
Publication status	Published - 2019
Externally published	Yes

Free keywords

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

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10.32023/0001-5237/69.2.3

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Smith, A. M. S., Csizmadia, S., Gandolfi, D., Albrecht, S., Alonso, R., Barragán, O., Cabrera, J., Cochran, W. D., Dai, F., Deeg, H., Eigmüller, P., Endl, M., Erikson, A., Fridlund, M., Fukui, A., Grziwa, S., Guenther, E. W., Hatzes, A. P., Hidalgo, D., ... Van Eylen, V. (2019). K2-295 B and K2-237 B: Two transiting hot Jupiters. Acta Astronomica, 69(2), 135-158. https://doi.org/10.32023/0001-5237/69.2.3

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title = "K2-295 B and K2-237 B: Two transiting hot Jupiters",

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.",

keywords = "Planetary systems, Planets, Planets and satellites: detection, Satellites: individual: K2-295, K2-237",

author = "Smith, \{A. M.S.\} and S. Csizmadia and D. Gandolfi and S. Albrecht and R. Alonso and O. Barrag{\'a}n and J. Cabrera and Cochran, \{W. D.\} and F. Dai and H. Deeg and P. Eigm{\"u}ller and M. Endl and A. Erikson and M. Fridlund and A. Fukui and S. Grziwa and Guenther, \{E. W.\} and Hatzes, \{A. P.\} and D. Hidalgo and T. Hirano and J. Korth and M. Kuzuhara and J. Livingston and N. Narita and D. Nespral and P. Niraula and G. Nowak and E. Palle and M. P{\"a}tzold and Persson, \{C. M.\} and J. Prieto-Arranz and H. Rauer and S. Redfield and I. Ribas and \{Van Eylen\}, V.",

year = "2019",

doi = "10.32023/0001-5237/69.2.3",

language = "English",

volume = "69",

pages = "135--158",

journal = "Acta Astronomica",

issn = "0001-5237",

publisher = "Copernicus Foundation for Polish Astronomy",

number = "2",

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Smith, AMS, Csizmadia, S, Gandolfi, D, Albrecht, S, Alonso, R, Barragán, O, Cabrera, J, Cochran, WD, Dai, F, Deeg, H, Eigmüller, P, Endl, M, Erikson, A, Fridlund, M, Fukui, A, Grziwa, S, Guenther, EW, Hatzes, AP, Hidalgo, D, Hirano, T, Korth, J, Kuzuhara, M, Livingston, J, Narita, N, Nespral, D, Niraula, P, Nowak, G, Palle, E, Pätzold, M, Persson, CM, Prieto-Arranz, J, Rauer, H, Redfield, S, Ribas, I & Van Eylen, V 2019, 'K2-295 B and K2-237 B: Two transiting hot Jupiters', Acta Astronomica, vol. 69, no. 2, pp. 135-158. https://doi.org/10.32023/0001-5237/69.2.3

TY - JOUR

T1 - K2-295 B and K2-237 B

T2 - Two transiting hot Jupiters

AU - Smith, A. M.S.

AU - Csizmadia, S.

AU - Gandolfi, D.

AU - Albrecht, S.

AU - Alonso, R.

AU - Barragán, O.

AU - Cabrera, J.

AU - Cochran, W. D.

AU - Dai, F.

AU - Deeg, H.

AU - Eigmüller, P.

AU - Endl, M.

AU - Erikson, A.

AU - Fridlund, M.

AU - Fukui, A.

AU - Grziwa, S.

AU - Guenther, E. W.

AU - Hatzes, A. P.

AU - Hidalgo, D.

AU - Hirano, T.

AU - Korth, J.

AU - Kuzuhara, M.

AU - Livingston, J.

AU - Narita, N.

AU - Nespral, D.

AU - Niraula, P.

AU - Nowak, G.

AU - Palle, E.

AU - Pätzold, M.

AU - Persson, C. M.

AU - Prieto-Arranz, J.

AU - Rauer, H.

AU - Redfield, S.

AU - Ribas, I.

AU - Van Eylen, V.

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

KW - Planetary systems

KW - Planets

KW - Planets and satellites: detection

KW - Satellites: individual: K2-295, K2-237

UR - https://www.scopus.com/pages/publications/85070419440

U2 - 10.32023/0001-5237/69.2.3

DO - 10.32023/0001-5237/69.2.3

M3 - Article

AN - SCOPUS:85070419440

SN - 0001-5237

VL - 69

SP - 135

EP - 158

JO - Acta Astronomica

JF - Acta Astronomica

IS - 2

ER -

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

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