HAT-P-27b: A HOT JUPITER TRANSITING A G STAR ON A 3 DAY ORBIT-猫眼课题宝

DOI：

10.1088/0004-637x/734/2/109

发表时间：

2011-01

期刊：

The Astrophysical Journal

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

B. B'eky;G. Bakos;J. Hartman;Guillermo Torres;D. Latham;A. Jord'an;P. Arriagada;D. Bayliss;László L. Kiss;G. Kov'acs;S. Quinn;Geoffrey W Marcy;Andrew W. Howard;Debra A. Fischer;John A. Johnson;G. Esquerdo;Robert W. Noyes;L. Buchhave;D. Sasselov;R. Stefanik;G. Perumpilly;J. L'az'ar;I. Papp;P'al S'ari

我们报告了HAT-P-27 b的发现，这是一颗穿过中等亮度的G8矮星星GSC 0333-00351（V = 12.214）的系外行星。轨道周期为3.039586 ± 0.000012天，凌日参考历元为2455186.01879 ± 0.00054（BJD），凌日持续时间为0.0705 ± 0.0019天。主星星的有效温度为5300 ± 90 K，比太阳稍冷，金属丰度为+0.29 ± 0.10。它的质量为0.94 ± 0.04 M，半径为0.90+0.05− 0.04 R。对于行星伴星，我们确定质量为0.660 ± 0.033 MJ，半径为1.038+0.077− 0.058 RJ。对于30个已知的0.3 MJ和0.8 MJ之间的凌日系外行星，主星星金属丰度和行星半径之间的负相关性和行星半径对平衡温度的额外依赖性被证实在高水平的统计显著性。

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 days, the reference epoch of transit is 2455186.01879 ± 0.00054 (BJD), and the transit duration is 0.0705 ± 0.0019 days. 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 M☉ and radius is 0.90+0.05− 0.04 R☉. 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.

HAT-P-27b: A HOT JUPITER TRANSITING A G STAR ON A 3 DAY ORBIT

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