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Discovery of WASP-113b and WASP-114b, two inflated hot-Jupiters with contrasting densities | | S. C. C. Barros
; D. J. A.. Brown
; G. Hébrard
; Y. Gómez Maqueo Chew
; D. R. Anderson
; P. Boumis
; L. Delrez
; K. L. Hay
; K. W. F. Lam
; J. Llama
; M. Lendl
; J. McCormac
; B. Skiff
; B Smalley
; O Turner
; M. Vanhuysse
; D. J. Armstrong
; I. Boisse
; F. Bouchy
; A. Collier Cameron
; F. Faedi
; M. Gillon
; C. Hellier
; E. Jehin
; A. Liakos
; J. Meaburn
; H. P. Osborn
; F. Pepe
; I. Plauchu-Frayn
; D. Pollacco
; D. Queloz
; J. Rey
; J. Spake
; D.Ségransan
; A.H.M. Triaud
; S. Udry
; S.R. Walker
; C.A. Watson
; R. G. West
; P. J. Wheatley
; | | Date: |
8 Jul 2016 | | Abstract: | We present the discovery and characterisation of the exoplanets WASP-113b and
WASP-114b by the WASP survey, {it SOPHIE} and {it CORALIE}.
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.
The host stars WASP-113 and WASP-114 are very similar. They are both early
G-type stars with an effective temperature of $sim 5900,$K, [Fe/H]$sim 0.12$
and $T_{
m eff}$ $sim 4.1$dex. However, WASP-113 is older than WASP-114.
Although the planetary companions have similar radii, WASP-114b is almost 4
times heavier than WASP-113b. WASP-113b has a mass of $0.48,$ $mathrm{M}_{
m
Jup}$ and an orbital period of $sim 4.5,$days; WASP-114b has a mass of
$1.77,$ $mathrm{M}_{
m Jup}$ and an orbital period of $sim 1.5,$days. Both
planets have inflated radii, in particular WASP-113 with a radius anomaly of
$Re=0.35$. The high scale height of WASP-113b ($sim 950$ km ) makes it a good
target for follow-up atmospheric observations. | | Source: | arXiv, 1607.2341 | | Services: | Forum | Review | PDF | Favorites | |
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