(2016) WASP-113b and WASP-114b, two inflated hot Jupiters with contrasting densities. Astronomy & Astrophysics, 593 . A113. doi:10.1051/0004-6361/201526517

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Abstract

Aims. We present the discovery and characterisation of the exoplanets WASP-113b and WASP-114b by the WASP surveys, SOPHIE and CORALIE.

Methods. The planetary nature of the systems was established by performing follow-up photometric and spectroscopic observations. The follow-up data were combined with the WASP-photometry and analysed with an MCMC code to obtain system parameters.
Results. The host stars WASP-113 and WASP-114 are very similar. They are both early G-type stars with an effective temperature of ~5900 K, [Fe/H] ~ 0.12, and log g~ 4.1 dex. However, WASP-113 is older than WASP-114. Although the planetary companions have similar radii, WASP-114b is almost four times heavier than WASP-113b. WASP-113b has a mass of 0.48 MJup and an orbital period of ~4.5 days; WASP-114b has a mass of 1.77 MJup and an orbital period of ~1.5 days. Both planets have inflated radii, in particular WASP-113 with a radius anomaly of ℜ = 0.35. The high scale height of WASP-113b (~950 km) makes it a good target for follow-up atmospheric observations.

Item Type:	Journal Article
Subjects:	Q Science > QB Astronomy
Divisions:	Faculty of Science > Physics
Library of Congress Subject Headings (LCSH):	Extrasolar planets
Journal or Publication Title:	Astronomy & Astrophysics
Publisher:	EDP Sciences
ISSN:	0004-6361
Official Date:	2 October 2016
Dates:	Date Event 2 October 2016 Published 4 July 2016 Accepted 12 May 2016 Submitted
Volume:	593
Article Number:	A113
DOI:	10.1051/0004-6361/201526517
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
Funder:	Queen's University of Belfast, University of St. Andrews, University of Keele, University of Leicester, Open University, Royal Greenwich Observatory. Isaac Newton Group of Telescopes (Santa Cruz de la Palma, Canary Islands), Science and Technology Facilities Council (Great Britain) (STFC), Centre national d'études spatiales (France) (CNES), Fundação para a Ciência e a Tecnologia (FCT) (Portugal), Seventh Framework Programme (European Commission) (FP7), Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung [Swiss National Science Foundation] (SNSF), Fonds national de la recherche scientifique (Belgium) (FNRS)
Grant number:	Grant 98761 (CNES), Contract No. IF/01312/2014, Grant PTDC/FIS-AST/1526/2014 (FCT), Grant no. 313014 ETAEARTH (FP7), FRFC 2.5.594.09.F (FNRS)
Open Access Version:	ArXiv

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