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IOP Publishing, Publications of the Astronomical Society of the Pacific, 903(123), p. 555-560

DOI: 10.1086/660135

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WASP-40b: Independent Discovery of the 0.6 MJupTransiting Exoplanet HAT-P-27b

Journal article published in 2011 by D. R. Anderson, S. C. C. Barros ORCID, I. Boisse, F. Bouchy, A. Collier Cameron, F. Faedi, G. Hebrard, C. Hellier, M. Lendl, C. Moutou, D. Pollacco, A. Santerne ORCID, B. Smalley, A. M. S. Smith, I. Todd and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

As accepted for publication in PASP. 8 pages, 6 figures, 4 tables ; From WASP photometry and SOPHIE radial velocities we report the discovery of WASP-40b (HAT-P-27b), a 0.6 Mjup planet that transits its 12th magnitude host star every 3.04 days. The host star is of late G-type or early K-type and likely has a metallicity greater than solar ([Fe/H] = 0.14 +/- 0.11). The planet's mass and radius are typical of the known hot Jupiters, thus adding another system to the apparent pileup of transiting planets with periods near 3 to 4 days. Our parameters match those of the recent HATnet announcement of the same planet, thus giving confidence in the techniques used. We report a possible indication of stellar activity in the host star.