Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii

Autoria(s): Gómez Maqueo Chew, Y.; Faedi, F.; Pollacco, D.; J. A. Brown, D.; P. Doyle, A.; Collier Cameron, A.; Gillon, M.; Lendl, M.; Smalley, B.; H. M. J. Triaud, A.; G. West, R.; J. Wheatley, P.; Busuttil, R.; Liebig, C.; R. Anderson, D.; Armstrong, D. J.; Barros, S. C. C.; Bento, J.; Bochinski, J.; Burwitz, V.; Delrez, L.; Enoch, B.; Fumel, A.; A. Haswell, C.; Hébrard, G.; Hellier, C.; Holmes, S.; Jehin, E.; Kolb, U.; F. L. Maxted, P.; McCormac, J.; R. M. Miller, G.; J. Norton, A.; Pepe, F.; Queloz, D.; Rodríguez, J.; Ségransan, D.; Skillen, I.; G. Stassun, K.; Udry, S.; Watson, C.
Data(s)

01/11/2013
Resumo

We report the discovery of two transiting hot Jupiters, WASP-65b (M<sub>pl</sub> = 1.55 ± 0.16 M<sub>J</sub>; R<sub>pl</sub> = 1.11 ± 0.06 R<sub>J</sub>), and WASP-75b (M<sub>pl</sub> = 1.07 ± 0.05 M<sub>J</sub>; R<sub>pl</sub> = 1.27 ± 0.05 R<sub>J</sub>). They orbit their host star every ∼2.311, and ∼2.484 days, respectively. The planet host WASP-65 is a G6 star (T<sub>eff</sub> = 5600 K, [Fe/H] = −0.07 ± 0.07, age 8 Gyr); WASP-75 is an F9 star (T<sub>eff</sub> = 6100 K, [Fe/H] = 0.07 ± 0.09, age ∼ 3 Gyr). WASP-65b is one of the densest known exoplanets in the mass range 0.1 and 2.0 MJ (ρpl = 1.13 ± 0.08 ρJ), a mass range where a large fraction of planets are found to be inflated with respect to theoretical planet models. WASP-65b is one of only a handful of planets with masses of ∼1.5 MJ, a mass regime surprisingly underrepresented among the currently known hot Jupiters. The radius of WASP-75b is slightly inflated (10%) as compared to theoretical planet models with no core, and has a density similar to that of Saturn (ρpl = 0.52 ± 0.06 ρJ). Key words. planetary systems – stars: individual:
Formato

application/pdf
Identificador

http://pure.qub.ac.uk/portal/en/publications/discovery-of-wasp65b-and-wasp75b-two-hot-jupiters-without-highly-inflated-radii(7f4efeb4-7717-47ff-a334-3990d9b0d0a0).html

http://dx.doi.org/10.1051/0004-6361/201322314

http://pure.qub.ac.uk/ws/files/9314179/Discovery_of_WASP_65b_and_WASP_75b_Two_Hot_Jupiters_Without_Highly_Inflated_Radii.pdf
Idioma(s)

eng
Direitos

info:eu-repo/semantics/openAccess
Fonte

Gómez Maqueo Chew , Y , Faedi , F , Pollacco , D , J. A. Brown , D , P. Doyle , A , Collier Cameron , A , Gillon , M , Lendl , M , Smalley , B , H. M. J. Triaud , A , G. West , R , J. Wheatley , P , Busuttil , R , Liebig , C , R. Anderson , D , Armstrong , D J , Barros , S C C , Bento , J , Bochinski , J , Burwitz , V , Delrez , L , Enoch , B , Fumel , A , A. Haswell , C , Hébrard , G , Hellier , C , Holmes , S , Jehin , E , Kolb , U , F. L. Maxted , P , McCormac , J , R. M. Miller , G , J. Norton , A , Pepe , F , Queloz , D , Rodríguez , J , Ségransan , D , Skillen , I , G. Stassun , K , Udry , S & Watson , C 2013 , ' Discovery of WASP-65b and WASP-75b: Two hot Jupiters without highly inflated radii ' Astronomy and Astrophysics , vol 559 , A36 . DOI: 10.1051/0004-6361/201322314
Palavras-Chave #astro-ph.EP #astro-ph.SR #/dk/atira/pure/subjectarea/asjc/3100/3103 #Astronomy and Astrophysics #/dk/atira/pure/subjectarea/asjc/1900/1912 #Space and Planetary Science
Tipo

article
Acesso ao item digital