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WASP-37b: A 1.8 MJ exoplanet transiting a metal-poor star
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2011 (English)In: Astronomical Journal, ISSN 0004-6256, E-ISSN 1538-3881, Vol. 141, no 1, 8- p.Article in journal (Refereed) Published
Abstract [en]

We report on the discovery of WASP-37b, a transiting hot Jupiter orbiting an m(v) = 12.7 G2-type dwarf, with a period of 3.577469 +/- 0.000011 d, transit epoch T-0 = 2455338.6188 +/- 0.0006 (HJD; dates throughout the paper are given in Coordinated Universal Time (UTC)), and a transit duration 0.1304(-0.0017)(+0.0018) d. The planetary companion has a mass M-p = 1.80 +/- 0.17 M-J and radius R-p = 1.16(-0.06)(+0.07) R-J, yielding a mean density of 1.15(-0.15)(+0.12) rho(J). From a spectral analysis, we find that the host star has M-star = 0.925 +/- 0.120 M-circle dot, R-star = 1.003 +/- 0.053 R-circle dot, T-eff = 5800 +/- 150 K, and [Fe/H] = -0.40 +/- 0.12. WASP-37 is therefore one of the lowest metallicity stars to host a transiting planet.

Place, publisher, year, edition, pages
2011. Vol. 141, no 1, 8- p.
Keyword [en]
planetary systems, stars: individual (WASP-37, GSC 00326-00658), techniques: photometric, techniques: spectroscopic
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-143687DOI: 10.1088/0004-6256/141/1/8ISI: 000285291100008OAI: oai:DiVA.org:uu-143687DiVA: diva2:390920
Available from: 2011-01-24 Created: 2011-01-24 Last updated: 2012-02-27Bibliographically approved

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Stempels, H. C.
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