WASP-43b: The closest-orbiting hot Jupiter

Coel Hellier; D. R. Anderson; A. Collier Cameron; M. Gillon; E. Jehin; M. Lendl; P. F. L. Maxted; F. Pepe; D. Pollacco; D. Queloz; D. Segransan; B. Smalley; A. M. S. Smith; J. Southworth; A. H. M. J. Triaud; S. Udry; R. G. West

doi:10.1051/0004-6361/201117081

WASP-43b: The closest-orbiting hot Jupiter

Earth and Planetary Astrophysics 2015-05-27 v1

Authors: Coel Hellier , D. R. Anderson , A. Collier Cameron , M. Gillon , E. Jehin , M. Lendl , P. F. L. Maxted , F. Pepe , D. Pollacco , D. Queloz , D. Segransan , B. Smalley , A. M. S. Smith , J. Southworth , A. H. M. J. Triaud , S. Udry , R. G. West

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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 hosting 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.

Keywords

transiting exoplanets

Cite

@article{arxiv.1104.2823,
  title  = {WASP-43b: The closest-orbiting hot Jupiter},
  author = {Coel Hellier and D. R. Anderson and A. Collier Cameron and M. Gillon and E. Jehin and M. Lendl and P. F. L. Maxted and F. Pepe and D. Pollacco and D. Queloz and D. Segransan and B. Smalley and A. M. S. Smith and J. Southworth and A. H. M. J. Triaud and S. Udry and R. G. West},
  journal= {arXiv preprint arXiv:1104.2823},
  year   = {2015}
}

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4 pages

WASP-43b: The closest-orbiting hot Jupiter

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