Discovery of the Transiting Planet Kepler-5B

Koch, David G.; Borucki, William J.; Rowe, Jason F.; Batalha, Natalie M.; Brown, Timothy M.; Caldwell, Douglas A.; Caldwell, John; Cochran, William D.; DeVore, Edna; Dunham, Edward W.; Dupree, Andrea K.; Gautier, Thomas N., III; Geary, John C.; Gilliland, Ron L.; Howell, Steve B.; Jenkins, Jon M.; Latham, David W.; Lissauer, Jack J.; Marcy, Geoff W.; Morrison, David; Tarter, Jill

Abstract

We present 44 days of high duty cycle, ultra precise photometry of the 13th magnitude star Kepler-5 (KIC 8191672, T(eff) = 6300 K, log g = 4.1), which exhibits periodic transits with a depth of 0.7%. Detailed modeling of the transit is consistent with a planetary companion with an orbital period of 3.548460 +/- 0.000032 days and a radius of 1.431(-0.052)(+0.041) R(J). Follow-up radial velocity measurements with the Keck HIRES spectrograph on nine separate nights demonstrate that the planet is more than twice as massive as Jupiter with a mass of 2.114(-0.059)(+0.056) M(J) and a mean density of 0.894 +/- 0.079 g cm(-3).

Citation

Koch, David G., William J. Borucki, Jason F. Rowe, Natalie M. Batalha, Timothy M. Brown, Douglas A. Caldwell, John Caldwell et al. "Discovery of the transiting planet Kepler-5b." The Astrophysical Journal Letters, Vol. 713, No. 2 (Apr., 2010): L131.

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