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
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DOIAbstract
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).NASA's Science Mission DirectorateAstronom