WASP-113b and WASP-114b, two inflated hot Jupiters with contrasting densities
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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.
Barros , S C C , Brown , D J A , Hébrard , G , Gómez Maqueo Chew , Y , Anderson , D R , Boumis , P , Delrez , L , Hay , K L , Lam , K W F , Llama , J , Lendl , M , McCormac , J , Skiff , B , Smalley , B , Turner , O , Vanhuysse , M , Armstrong , D J , Boisse , I , Bouchy , F , Collier Cameron , A , Faedi , F , Gillon , M , Hellier , C , Jehin , E , Liakos , A , Meaburn , J , Osborn , H P , Pepe , F , Plauchu-Frayn , I , Pollacco , D , Queloz , D , Rey , J , Spake , J , Ségransan , D , Triaud , A H M , Udry , S , Walker , S R , Watson , C A , West , R G & Wheatley , P J 2016 , ' WASP-113b and WASP-114b, two inflated hot Jupiters with contrasting densities ' , Astronomy & Astrophysics , vol. 593 , A113 . https://doi.org/10.1051/0004-6361/201526517
Astronomy & Astrophysics
© ESO, 2016. This work is made available online in accordance with the publisher’s policies. This is the final published version of the work, which was originally published at: https://dx.doi.org/10.1051/0004-6361/201526517