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Van Grootel","submitted_at":"2014-01-13T10:59:00Z","abstract_excerpt":"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. 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Collier-Cameron, A. H. M. J. Triaud, A. M. S. Smith, B. Smalley, C. Hellier, D. Pollacco, D. Queloz, D. R. Anderson, D. Segransan, E. Jehin, F. Pepe, J. Southworth, L. Delrez, M. Gillon, M. Lendl, P. F. L. Maxted, R. G. West, S. Udry, V. Van Grootel","submitted_at":"2014-01-13T10:59:00Z","abstract_excerpt":"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. 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