WASP-26b: A 1-Jupiter-mass planet around an early-G-type star

Details WASP-26b: A 1-Jupiter-mass planet around an early-G-type star WASP-26b: A 1-Jupiter-mass planet around an early-G-type star

2010-04-09

arxiv.org/abs/1004.1542v1

Astronomy and Astrophysics

Astrophysics

Earth and Planetary Astrophysics

4 pages, 5 figure, submitted to A&A

Scientific paper

We report the discovery of WASP-26b, a moderately over-sized Jupiter-mass exoplanet transiting its 11.3-magnitude early-G-type host star (1SWASP J001824.70-151602.3; TYC 5839-876-1) every 2.7566 days. A simultaneous fit to transit photometry and radial-velocity measurements yields a planetary mass of 1.02 +/- 0.03 M_Jup and radius of 1.32 +/- 0.08 R_Jup. The host star, WASP-26, has a mass of 1.12 +/- 0.03 M_sun and a radius of 1.34 +/- 0.06 R_sun and is in a visual double with a fainter K-type star. The two stars are at least a common-proper motion pair with a common distance of around 250 +/- 15 pc and an age of 6 +/- 2 Gy.

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