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

B. Smalley (Keele University) , D.R. Anderson , A. Collier Cameron , M. Gillon , C. Hellier , T.A. Lister , P.F.L. Maxted , D. Queloz

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A.H.M.J. Triaud R.G. West S.J. Bentley B. Enoch F. Pepe D.L. Pollacco D. Segransan A.M.S. Smith J. Southworth S. Udry P.J. Wheatley P.L. Wood J. Bento

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classification 🌌 astro-ph.EP astro-ph.SR

keywords stararoundearly-g-typehostjupiter-massmassradiuswasp-26b

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

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