Universität zu Köln

Smith, A. M. S., Csizmadia, Sz, Gandolfi, D., Albrecht, S., Alonso, R., Barragan, O., Cabrera, J., Cochran, W. D., Dai, F., Deeg, H., Eigmueller, Ph, Endl, M., Erikson, A., Fridlund, M., Fukui, A., Grziwa, S., Guenther, E. W., Hatzes, A. P., Hidalgo, D., Hirano, T., Korth, J., Kuzuhara, M., Livingston, J., Narita, N., Nespral, D., Niraula, P., Nowak, G., Palle, E., Paetzold, M., Persson, C. M., Prieto-Arranz, J., Rauer, H., Redfield, S., Ribas, I and Van Eylen, V. (2019). K2-295 b and K2-237 b: Two Transiting Hot Jupiters. Acta Astron., 69 (2). S. 135 - 159. WARSAW: COPERNICUS FOUNDATION POLISH ASTRONOMY. 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 Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Smith, A. M. S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Csizmadia, Sz UNSPECIFIED UNSPECIFIED UNSPECIFIED Gandolfi, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Albrecht, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Alonso, R. UNSPECIFIED UNSPECIFIED UNSPECIFIED Barragan, O. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cabrera, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Cochran, W. D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Dai, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Deeg, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Eigmueller, Ph UNSPECIFIED UNSPECIFIED UNSPECIFIED Endl, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Erikson, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fridlund, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fukui, A. UNSPECIFIED UNSPECIFIED UNSPECIFIED Grziwa, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Guenther, E. W. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hatzes, A. P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hidalgo, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Hirano, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Korth, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Kuzuhara, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Livingston, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Narita, N. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nespral, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Niraula, P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Nowak, G. UNSPECIFIED UNSPECIFIED UNSPECIFIED Palle, E. UNSPECIFIED UNSPECIFIED UNSPECIFIED Paetzold, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Persson, C. M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Prieto-Arranz, J. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rauer, H. UNSPECIFIED UNSPECIFIED UNSPECIFIED Redfield, S. UNSPECIFIED UNSPECIFIED UNSPECIFIED Ribas, I UNSPECIFIED UNSPECIFIED UNSPECIFIED Van Eylen, V. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-160825
DOI:	10.32023/0001-5237/69.2.3
Journal or Publication Title:	Acta Astron.
Volume:	69
Number:	2
Page Range:	S. 135 - 159
Date:	2019
Publisher:	COPERNICUS FOUNDATION POLISH ASTRONOMY
Place of Publication:	WARSAW
ISSN:	0001-5237
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EXTRASOLAR PLANETS; LIGHT CURVES; COOL STARS; SPECTROGRAPH; GYROCHRONOLOGY; COMPANIONS; ATMOSPHERE; EXOPLANETS; MODEL Multiple languages Astronomy & Astrophysics Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/16082