HAT-P-27b: A hot Jupiter transiting a G star on a 3 day orbit
| Autor: | Béky, Bence, Bakos, Gáspár Á., Hartman, Joel, Torres, Guillermo, Latham, David W., Jordán, Andres, Arriagada, Pamela, Bayliss, Daniel, Kiss, László L., Kovács, Géza, Quinn, Sam N., Marcy, Geoffrey W., Howard, Andrew W., Fischer, Debra A., Johnson, John A., Esquerdo, Gilbert A., Noyes, Robert W., Buchhave, Lars A., Sasselov, Dimitar D., Stefanik, Robert P., Perumpilly, Gopakumar, Lázár, József, Papp, István, Sári, Pál |
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| Rok vydání: | 2011 |
| Předmět: | |
| Zdroj: | B\'eky, B., et al. 2011, ApJ, 734, 109 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/0004-637X/734/2/109 |
| Popis: | We report the discovery of HAT-P-27b, an exoplanet transiting the moderately bright G8 dwarf star GSC 0333-00351 (V=12.214). The orbital period is 3.039586 +/- 0.000012 d, the reference epoch of transit is 2455186.01879 +/- 0.00054 (BJD), and the transit duration is 0.0705 +/- 0.0019 d. The host star with its effective temperature 5300 +/- 90 K is somewhat cooler than the Sun, and is more metal-rich with a metallicity of +0.29 +/- 0.10. Its mass is 0.94 +/- 0.04 Msun and radius is 0.90 +/- 0.04 Rsun. For the planetary companion we determine a mass of 0.660 +/- 0.033 MJ and radius of 1.038 +0.077 -0.058 RJ. For the 30 known transiting exoplanets between 0.3 MJ and 0.8 MJ, a negative correlation between host star metallicity and planetary radius, and an additional dependence of planetary radius on equilibrium temperature are confirmed at a high level of statistical significance. Comment: Submitted to ApJ on 2011-01-18. 12 pages, 7 figures, 7 tables |
| Databáze: | arXiv |
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