학술논문
Kepler-62: A five-planet system with planets of 1.4 and 1.6 Earth radii in the Habitable Zone
Document Type
Working Paper
Author
Borucki, W. J.; Agol, E.; Fressin, F.; Kaltenegger, L.; Rowe, J.; Isaacson, H.; Fischer, D.; Batalha, N.; Lissauer, J. J.; Marcy, G. W.; Fabrycky, D.; Désert, J. -M.; Bryson, S. T.; Barclay, T.; Bastien, F.; Boss, A.; Brugamyer, E.; Buchhave, L. A.; Burke, Chris; Caldwell, D. A.; Carter, J.; Charbonneau, D.; Crepp, J. R.; Christensen-Dalsgaard, J.; Christiansen, J. L.; Ciardi, D.; Cochran, W. D.; DeVore, E.; Doyle, L.; Dupree, A. K.; Endl, M.; Everett, M. E.; Ford, E. B.; Fortney, J.; Gautier III, T. N.; Geary, J. C.; Gould, A.; Haas, M.; Henze, C.; Howard, A. W.; Howell, S. B.; Huber, D.; Jenkins, J. M.; Kjeldsen, H.; Kolbl, R.; Kolodziejczak, J.; Latham, D. W.; Lee, B. L.; Lopez, E.; Mullally, F.; Orosz, J. A.; Prsa, A.; Quintana, E. V.; Sanchez-Ojeda, R.; Sasselov, D.; Seader, S.; Shporer, A.; Steffen, J. H.; Still, M.; Tenenbaum, P.; Thompson, S. E.; Torres, G.; Twicken, J. D.; Welsh, W. F.; Winn, J. N.
Source
Science Express / http://www.sciencemag.org/content/early/recent / 18 April 2013 / Page 1/ 10.1126/science.1234702
Subject
Language
Abstract
We present the detection of five planets -- Kepler-62b, c, d, e, and f -- of size 1.31, 0.54, 1.95, 1.61 and 1.41 Earth radii, orbiting a K2V star at periods of 5.7, 12.4, 18.2, 122.4 and 267.3 days, respectively. The outermost planets (Kepler-62e & -62f) are super-Earth-size (1.25 < planet radius/earth radius < 2.0) planets in the habitable zone (HZ) of their host star, receiving 1.2 +- 0.2 and 0.41 +- 0.05 times the solar flux at Earth's orbit. Theoretical models of Kepler-62e and -62f for a stellar age of ~7 Gyr suggest that both planets could be solid: either with a rocky composition or composed of mostly solid water in their bulk.
Comment: Published online 18 April 2013 in Science Express
Comment: Published online 18 April 2013 in Science Express