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arXiv 1005.2009astro-ph.EP
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HAT-P-16 b:一颗4 Mj的行星在偏心轨道上过境一颗明亮的恒星

HAT-P-16b: A 4 Mj Planet Transiting A Bright Star On An Eccentric Orbit

L. A. Buchhave, G. A. Bakos, J. D. Hartman, G. Torres, G. Kovacs, D. W. Latham, R. W. Noyes, G. A. Esquerdo, M. Everett, A. W. Howard, G. W. Marcy, D. A. Fische… 展开作者

L. A. Buchhave, G. A. Bakos, J. D. Hartman, G. Torres, G. Kovacs, D. W. Latham, R. W. Noyes, G. A. Esquerdo, M. Everett, A. W. Howard, G. W. Marcy, D. A. Fischer, J. A. Johnson, J. Andersen, G. Furesz, G. Perumpilly, D. D. Sasselov, R. P. Stefanik, B. Beky, J. Lazar, I. Papp, P. Sari

摘要:

我们报告发现了一颗凌日系外行星HAT-P-16 b,它绕着V = 10.8等的F8矮星GSC 2792-01700运行,周期P = 2.775960 +-0.00003 d,凌日历元Tc = 2455027.59293 +- 0.00031(BJD),渡越时间为0.1276 ± 0.0013d。主恒星的质量为1.22 +- 0.04 Msun,半径为1.24 +- 0.05 Rsun,有效温度为6158 +-80 K,金属丰度[Fe/H] = +0.17 +- 0.08。这颗行星的质量为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。将这些观测到的特征与最近的理论模型进行比较,我们发现HAT-P-16 b与1 Gyr H/He主导的气体巨行星相一致。HAT-P-16 b位于质量半径图的稀疏分布区域中,并且具有e = 0.036的非零偏心率,显著性为10 σ。

英文摘要:

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 d, transit epoch Tc = 2455027.59293 +- 0.00031 (BJD), and transit duration 0.1276 +- 0.0013 d. The host star has a mass of 1.22 +- 0.04 Msun, radius of 1.24 +- 0.05 Rsun, 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/cm3. 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 10 sigma.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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