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

D.R. Anderson, S.C.C. Barros, I. Boisse, F. Bouchy, A. Collier Cameron, F. Faedi, [No Value] Hebrard, Don Pollacco, A. Santerne, B. Smalley, A.M.S. Smith, I. Todd, A.H.M.J. Triaud, R.G. West, P. Wheatley

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


From WASP photometry and SOPHIE radial velocities we report the discovery of WASP-40b (HAT-P-27b), a 0.6 M 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 3-4 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)555-560
Number of pages6
JournalPublications of the Astronomical Society of the Pacific
Issue number903
Publication statusPublished - May 2011

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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