Article (Scientific journals)
WASP-113b and WASP-114b, two inflated hot-Jupiters with contrasting densities
Barros, S. C. C.; Brown, D. J. A.; Hébrard, G. et al.
2016In Astronomy and Astrophysics, 593, p. 9
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Keywords :
Astrophysics - Earth and Planetary Astrophysics
Abstract :
[en] 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 $T_{\rm eff}$ $\sim 4.1$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 $0.48\,$ $\mathrm{M}_{\rm Jup}$ and an orbital period of $\sim 4.5\,$days; WASP-114b has a mass of $1.77\,$ $\mathrm{M}_{\rm Jup}$ 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Barros, S. C. C.
Brown, D. J. A.
Hébrard, G.
Gómez Maqueo Chew, Y.
Anderson, D. R.
Boumis, P.
Delrez, Laetitia ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
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, Michaël  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Hellier, C.
Jehin, Emmanuel  ;  Université de Liège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
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.
More authors (30 more) Less
Language :
English
Title :
WASP-113b and WASP-114b, two inflated hot-Jupiters with contrasting densities
Publication date :
01 October 2016
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Volume :
593
Pages :
9
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
9 pages, 6 figures, 5 tables, published in A&A
Available on ORBi :
since 09 September 2016

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