WASP-43b: the closest-orbiting hot Jupiter

C. Hellier, D.R. Anderson, A. Collier Cameron, M. Gillon, E. Jehin, M. Lendl, P.F. Maxted, Don Pollacco, D. Queloz, D. Ségransan, B. Smalley, A.M.S. Smith, J. Southworth, A.H.M.J. Triaud, [No Value] Udry

Research output: Contribution to journalArticlepeer-review

93 Citations (Scopus)

Abstract

We report the discovery of WASP-43b, a hot Jupiter transiting a K7V star every 0.81 d. At 0.6-Msun the host star has the lowest mass of any star currently known to host a hot Jupiter. It also shows a 15.6-d rotation period. The planet has a mass of 1.8 MJup, a radius of 0.9 RJup, and with a semi-major axis of only 0.014 AU has the smallest orbital distance of any known hot Jupiter. The discovery of such a planet around a K7V star shows that planets with apparently short remaining lifetimes owing to tidal decay of the orbit are also found around stars with deep convection zones.
Original languageEnglish
Article numberL7
JournalAstronomy and Astrophysics
Volume535
DOIs
Publication statusPublished - Nov 2011

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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