WASP-40b: Independent Discovery of the 0.6 M$_Jup$ Transiting Exoplanet HAT-P-27b

D.~R. Anderson, S.~C.~C. Barros, I. Boisse, F. Bouchy, A. Collier Cameron, F. Faedi, G. Hebrard, C. Hellier, M. Lendl, C. Moutou, D. Pollacco, A. Santerne, B. Smalley, A.~M.~S. Smith, I. Todd, A.~H.~M.~J. Triaud, R.~G. West, P.~J. Wheatley, J. Bento, B. EnochM. Gillon, P.~F.~L. Maxted, J. McCormac, D. Queloz, E.~K. Simpson, I. Skillen

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16 Citations (Scopus)

Abstract

From WASP photometry and SOPHIE radial velocities we report the discovery of WASP-40b (HAT-P-27b), a 0.6 M$_Jup$ 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 plusmn 0.11). The planetrsquos mass and radius are typical of the known hot Jupiters, thus adding another system to the apparent pileup of transiting planets with periods near 3-4 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.
Original languageEnglish
Pages (from-to)555
Number of pages1
JournalPublications of the Astronomical Society of the Pacific
Volume123
DOIs
Publication statusPublished - 1 May 2011

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