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WASP-43b: the closest-orbiting hot Jupiter

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posted on 2012-10-24, 08:55 authored by C. Hellier, D. R. Anderson, A. C. 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
We report the discovery of WASP-43b, a hot Jupiter transiting a K7V star every 0.81 d. At 0.6-M⊙ 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.

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Citation

Astronomy & Astrophysics, 2011, 535

Version

  • VoR (Version of Record)

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Astronomy & Astrophysics

Publisher

EDP Sciences for European Southern Observatory (ESO)

issn

0004-6361

Copyright date

2011

Available date

2012-10-24

Publisher version

http://www.aanda.org/articles/aa/abs/2011/11/aa17081-11/aa17081-11.html

Language

en

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