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WASP-21b :
WASP-21b : a hot-Saturn exoplanet transiting a thick disc star
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Bouchy, F. (author)
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Hebb, L. (author)
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Skillen, I. (author)
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Cameron, A. Collier (author)
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Smalley, B. (author)
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Udry, S. (author)
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Anderson, D. R. (author)
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Boisse, I. (author)
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Enoch, B. (author)
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Haswell, C. A. (author)
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Hebrard, G. (author)
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Hellier, C. (author)
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Joshi, Y. (author)
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Kane, S. R. (author)
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Maxted, P. F. L. (author)
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Mayor, M. (author)
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Moutou, C. (author)
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Pepe, F. (author)
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Pollacco, D. (author)
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Queloz, D. (author)
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Segransan, D. (author)
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Simpson, E. K. (author)
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Smith, A. M. S. (author)
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- Stempels, H. C. (author)
- Uppsala universitet,Institutionen för fysik och astronomi
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Street, R. (author)
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Triaud, A. H. M. J. (author)
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West, R. G. (author)
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Wheatley, P. J. (author)
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(creator_code:org_t)
- 2010-09-17
- 2010
- English.
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In: Astronomy and Astrophysics. - : EDP Sciences. - 0004-6361 .- 1432-0746. ; 519, s. A98-
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https://www.aanda.or...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- 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 1.07 R-Jup and mass of 0.30 M-Jup, WASP-21b has a density close to 0.24 rho(Jup) corresponding 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.
Subject headings
- NATURVETENSKAP -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)
Keyword
- planetary systems
- techniques: photometric
- techniques: radial velocities
- Astronomy and astrophysics
- Astronomi och astrofysik
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Bouchy, F.
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Hebb, L.
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Skillen, I.
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Cameron, A. Coll ...
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Smalley, B.
-
Udry, S.
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show more...
-
Anderson, D. R.
-
Boisse, I.
-
Enoch, B.
-
Haswell, C. A.
-
Hebrard, G.
-
Hellier, C.
-
Joshi, Y.
-
Kane, S. R.
-
Maxted, P. F. L.
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Mayor, M.
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Moutou, C.
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Pepe, F.
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Pollacco, D.
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Queloz, D.
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Segransan, D.
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Simpson, E. K.
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Smith, A. M. S.
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Stempels, H. C.
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Street, R.
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Triaud, A. H. M. ...
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West, R. G.
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Wheatley, P. J.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Astronomy Astrop ...
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Astronomy and As ...
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Uppsala University