Barros, SCC, Brown, DJA, Hebrard, G, Gomez Maqueo Chew, Y, Anderson, DR, Boumis, P, Delrez, L, Hay, K, Lam, KWF, Llama, J, Lendl, M, McCormac, J, Skiff, B, Smalley, B ORCID: https://orcid.org/0000-0002-3456-087X, Turner, O, Vanhuysse, M, Armstrong, DJ, Boisse, I, Bouchy, F, Collier Cameron, A, Faedi, F, Gillon, M, Hellier, C ORCID: https://orcid.org/0000-0002-3439-1439, Jehin, E, Liakos, A, Meaburn, J, Osborn, HP, Pepe, F, Plauchu-Frayn, I, Pollacco, D, Queloz, D, Rey, J, Spake, J, Segransan, D, Triaud, AHM, Udry, S, Walker, SR, Watson, CA, WEst, RG and Wheatley, PJ (2016) Discovery of WASP-113b and WASP-114b, two inflated hot-Jupiters with contrasting densities. Astronomy and Astrophysics, 593.

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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: Article
Additional Information: This work is made available online in accordance with the publishers policies. © ESO, 2016
Uncontrolled Keywords: planets and satellites: detection; stars: individual:WASP-113; stars:individual:WASP-114; techniques:radial velocities/ techniques:photometric
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Depositing User: Symplectic
Date Deposited: 31 Oct 2016 11:50
Last Modified: 08 Apr 2019 10:32
URI: http://eprints.keele.ac.uk/id/eprint/2383

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