HAT-P-16b: A 4 MJ PLANET TRANSITING A BRIGHT STAR ON AN ECCENTRIC ORBIT,
HAT-P-16b: A 4 MJ PLANET TRANSITING A BRIGHT STAR ON AN ECCENTRIC ORBIT,
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HAT-P-16b：一颗 4 MJ 的行星在偏心轨道上凌日一颗明亮的恒星，
DOI：
10.1088/0004-637x/720/2/1118
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
P. Sári
中科院分区：
文献类型：
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作者：
L. Buchhave;L. Buchhave;G. Bakos;J. Hartman;G. Torres;G. Kovacs;D. Latham;R. Noyes;G. Esquerdo;M. Everett;A. Howard;G. Marcy;D. Fischer;J. Johnson;J. Andersen;G. Fűrész;G. Perumpilly;D. Sasselov;R. Stefanik;B. Béky;J. Lázár;I. Papp;P. Sári
我们发现了一颗围绕着V = 10.8等F8矮星GSC 2792-01700运行的凌日系外行星hatp -P-16b，其周期P = 2.775960±0.000003天，凌日历元Tc = 2455027.59293±0.00031 (BJD10)，凌日持续时间0.1276±0.0013天。主星的质量为1.22±0.04 M☉，半径为1.24±0.05 R☉，有效温度为6158±80 K，金属丰度[Fe/H] = +0.17±0.08。这颗伴星的质量为4.193±0.094 MJ，半径为1.289±0.066 RJ，平均密度为2.42±0.35 g cm−3。将这些观测特征与最近的理论模型进行比较，我们发现HAT-P-16b与1 Gyr H/ he主导的气态巨行星一致。HAT-P-16b位于质量半径图中人口稀少的区域，其非零偏心率e = 0.036，显著性为10σ。
We report the discovery of HAT-P-16b, a transiting extrasolar planet orbiting the V = 10.8 mag F8 dwarf GSC 2792-01700, with a period P = 2.775960 ± 0.000003 days, transit epoch Tc = 2455027.59293 ± 0.00031 (BJD10), and transit duration 0.1276 ± 0.0013 days. The host star has a mass of 1.22 ± 0.04 M☉, radius of 1.24 ± 0.05 R☉, effective temperature 6158 ± 80 K, and metallicity [Fe/H] = +0.17 ± 0.08. The planetary companion has a mass of 4.193 ± 0.094 MJ and radius of 1.289 ± 0.066 RJ, yielding a mean density of 2.42 ± 0.35 g cm−3. Comparing these observed characteristics with recent theoretical models, we find that HAT-P-16b is consistent with a 1 Gyr H/He-dominated gas giant planet. HAT-P-16b resides in a sparsely populated region of the mass–radius diagram and has a non-zero eccentricity of e = 0.036 with a significance of 10σ.