Article (Scientific journals)
WASP-103 b: A new planet at the edge of tidal disruption
Gillon, Michaël; Anderson, D. R.; Collier-Cameron, A. et al.
2014In Astronomy and Astrophysics
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Keywords :
Astrophysics - Earth and Planetary Astrophysics
Abstract :
[en] We report the discovery of WASP-103b, a new ultra-short-period planet (P=22.2 hr) transiting a 12.1 V-magnitude F8-type main-sequence star (1.22+-0.04 Msun, 1.44-0.03+0.05 Rsun, Teff = 6110+-160 K). WASP-103b is significantly more massive (1.49+-0.09 Mjup) and larger (1.53-0.07+0.05 Rjup) than Jupiter. Its large size and extreme irradiation (around 9 10^9 erg/s/cm^2) make it an exquisite target for a thorough atmospheric characterization with existing facilities. Furthermore, its orbital distance is less than 20% larger than its Roche radius, meaning that it might be significantly distorted by tides and might experience mass loss through Roche-lobe overflow. It thus represents a new key object for understanding the last stage of the tidal evolution of hot Jupiters.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Gillon, Michaël  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Anderson, D. R.
Collier-Cameron, A.
Delrez, Laetitia ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Hellier, C.
Jehin, Emmanuel  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Origines Cosmologiques et Astrophysiques (OrCa)
Lendl, M.
Maxted, P. F. L.
Pepe, F.
Pollacco, D.
Queloz, D.
Segransan, D.
Smith, A. M. S.
Smalley, B.
Southworth, J.
Triaud, A. H. M. J.
Udry, S.
Van Grootel, Valérie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astrophysique stellaire théorique et astérosismologie
West, R. G.
More authors (9 more) Less
Language :
English
Title :
WASP-103 b: A new planet at the edge of tidal disruption
Publication date :
09 January 2014
Journal title :
Astronomy and Astrophysics
ISSN :
0004-6361
eISSN :
1432-0746
Publisher :
EDP Sciences, Les Ulis, France
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
5 pages, 4 figures. Accepted for publication as Letter in Astronomy and Astrophysics on 09/01/2014
Available on ORBi :
since 14 January 2014

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