WASP-43b: The closest-orbiting hot Jupiter

[en] 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.

Disciplines :

Space science, astronomy & astrophysics

Author, co-author :

Hellier, Coel

Anderson, D. R.

Collier Cameron, A.

Gillon, Michaël ; Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique et traitement de l'image

Jehin, Emmanuel

Lendl, M.

Maxted, P. F. L.

Pepe, F.

Pollacco, D.

Queloz, D.

More authors (7 more)

Language :

English

Title :

WASP-43b: The closest-orbiting hot Jupiter

Publication date :

14 November 2011

Journal title :

Astronomy and Astrophysics

ISSN :

0004-6361

eISSN :

1432-0746

Publisher :

EDP Sciences, Les Ulis, France

Volume :

535

Pages :

Peer reviewed :

Peer Reviewed verified by ORBi

Additional URL :

http://adsabs.harvard.edu/abs/2011arXiv1104.2823H

Commentary :

4 pages

Available on ORBi :

since 11 July 2011

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