WASP-21b: a hot-Saturn exoplanet transiting a thick disc star
WASP-21b: a hot-Saturn exoplanet transiting a thick disc star
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WASP-21b:一颗热土星系外行星凌日厚盘状恒星
DOI:
10.1051/0004-6361/201014817
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发表时间:
2010
影响因子:
6.5
通讯作者:
Bouchy F
中科院分区:
文献类型:
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作者:
Bouchy F
We report the discovery of WASP-21b, a new transiting exoplanet discovered by the Wide Angle Search for Planets (WASP) Consortium and established and characterized with the FIES, SOPHIE, CORALIE and HARPS fiber-fed echelle spectrographs. A 4.3-d period, 1.1% transit depth and 3.4-h duration are derived for WASP-21b using SuperWASP-North and high precision photometric observations at the Liverpool Telescope. Simultaneous fitting to the photometric and radial velocity data with a Markov Chain Monte Carlo procedure leads to a planet in the mass regime of Saturn. With a radius of 1.07RJupand mass of 0.30MJup, WASP-21b has a density close to 0.24ρJupcorresponding to the distribution peak at low density of transiting gaseous giant planets. With a host star metallicity [Fe/H] of –0.46, WASP-21b strengthens the correlation between planetary density and host star metallicity for the five known Saturn-like transiting planets. Furthermore there are clear indications that WASP-21b is the first transiting planet belonging to the thick disc.
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DOI:
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发表时间:
2009
期刊:
影响因子:
--
作者:
G. González
通讯作者:
G. González
DOI:
--
发表时间:
2002
期刊:
影响因子:
--
作者:
F. Pepe;M. Mayor;F. Galland;D. Naef;D. Queloz;N. Santos;S. Udry;M. Burnet
通讯作者:
M. Burnet
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
M. Haywood
通讯作者:
M. Haywood
DOI:
--
发表时间:
2009
期刊:
影响因子:
--
作者:
F. Bouchy;G. Hébrard;S. Udry;X. Delfosse;I. Boisse;M. Desort;X. Bonfils;A. Eggenberger;D. Ehrenreich;T. Forveille;A. Lagrange;H. Coroller;C. Lovis;C. Moutou;F. Pepe;C. Perrier;F. Pont;D. Queloz;N. Santos;D. Ségransan;A. Vidal
通讯作者:
A. Vidal
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
L. Hebb;A. Collier;B. Loeillet;D. Pollacco;G. Hébrard;R. Street;F. Bouchy;H. C. Stempels;C. Moutou;E. Simpson;S. Udry;Y. Joshi;R. West;I. Skillen;D. Wilson;I. McDonald;N. Gibson;S. Aigrain;D. Anderson;C. Benn;D. Christian;B. Enoch;C. Haswell;C. Hellier;K. Horne;J. Irwin;T. Lister;P. Maxted;M. Mayor;A. Norton;N. Parley;F. Pont;D. Queloz;B. Smalley;P. Wheatley
通讯作者:
P. Wheatley