WASP-25b: a 0.6 MJ planet in the Southern hemisphere

Autoria(s): Enoch, B.; Collier, Cameron A.; Anderson, D.R.; Lister, T.A.; Hellier, C.; Maxted, P.F.L.; Queloz, D.; Triaud, A.H.M.J.; West, R.G.; Brown, D.J.A.; Gillon, M.; Hebb, L.; Lendl, M.; Parley, N.; Pepe, F.; Pollacco, Don; Segransan, D.; Simpson, E.; Street, R.A.; Udry, S.
Data(s)

01/01/2011
Resumo

We report the detection of a 0.6 MJ extrasolar planet by WASP-South, WASP-25b, transiting its solar-type host star every 3.76 d. A simultaneous analysis of the WASP, FTS and Euler photometry and CORALIE spectroscopy yields a planet of Rp= 1.22 RJ and Mp= 0.58 MJ around a slightly metal-poor solar-type host star, [Fe/H]=- 0.05 ± 0.10, of R*= 0.92 Rsun and M*= 1.00 Msun. WASP-25b is found to have a density of ?p= 0.32 ?J, a low value for a sub-Jupiter mass planet. We investigate the relationship of planetary radius to planetary equilibrium temperature and host star metallicity for transiting exoplanets with a similar mass to WASP-25b, finding that these two parameters explain the radii of most low-mass planets well.
Identificador

http://pure.qub.ac.uk/portal/en/publications/wasp25b-a-06-mj-planet-in-the-southern-hemisphere(a4168337-11bc-4651-ad65-dd6bc98d37e9).html

http://dx.doi.org/10.1111/j.1365-2966.2010.17550.x
Idioma(s)

eng
Direitos

info:eu-repo/semantics/restrictedAccess
Fonte

Enoch , B , Collier , C A , Anderson , D R , Lister , T A , Hellier , C , Maxted , P F L , Queloz , D , Triaud , A H M J , West , R G , Brown , D J A , Gillon , M , Hebb , L , Lendl , M , Parley , N , Pepe , F , Pollacco , D , Segransan , D , Simpson , E , Street , R A & Udry , S 2011 , ' WASP-25b: a 0.6 MJ planet in the Southern hemisphere ' Monthly Notices of the Royal Astronomical Society , vol 410 , no. 3 , pp. 1631-1636 . DOI: 10.1111/j.1365-2966.2010.17550.x
Palavras-Chave #/dk/atira/pure/subjectarea/asjc/1900/1912 #Space and Planetary Science #/dk/atira/pure/subjectarea/asjc/3100/3103 #Astronomy and Astrophysics
Tipo

article
Acesso ao item digital