Gillon, M, Anderson, DR, Collier-Cameron, A, Delrez, L, Hellier, C, Jehin, E, Lendl, M, Maxted, PFL, Pepe, F, Pollacco, D, Queloz, D, Segransan, D, Smith, AMS, Smalley, B, Southworth, J, Triaud, AHMJ, Udry, S, Van Grootel, V and West, RG (2014) WASP-103 b: a new planet at the edge of tidal disruption. Astronomy & Astrophysics, 562. ISSN 0004-6361

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We report the discovery of WASP-103 b, a new ultra-short-period planet (P = 22.2 h) transiting a 12.1 V-magnitude F8-type main-sequence star (1.22 ± 0.04 M⊙, 1.44-0.03+0.05 R⊙, Teff = 6110 ± 160 K). WASP-103 b 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 (~ 9 × 109 erg s-1 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.

Item Type: Article
Uncontrolled Keywords: planetary systems; WASP-103; photometric; radial velocities; spectroscopic
Subjects: Q Science > QB Astronomy
Divisions: Faculty of Natural Sciences > School of Physical and Geographical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 30 Apr 2015 15:11
Last Modified: 20 May 2019 14:42

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