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arXiv 1012.3027astro-ph.EP
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Qatar-1b:一颗热木星绕着一颗富含金属的K矮星运行

Qatar-1b: a hot Jupiter orbiting a metal-rich K dwarf star

K. A. Alsubai, N. R. Parley, D. M. Bramich, R. G. West, P. M. Sorensen, A. Collier Cameron, D. W. Latham, K. Horne, D. R. Anderson, D. J. A. Brown, L. A. Buchha… 展开作者

K. A. Alsubai, N. R. Parley, D. M. Bramich, R. G. West, P. M. Sorensen, A. Collier Cameron, D. W. Latham, K. Horne, D. R. Anderson, D. J. A. Brown, L. A. Buchhave, G. A. Esquerdo, M. E. Everett, G. Fürész, C. Hellier, G. M. Miller, D. Pollacco, S. N. Quinn, J. C. Smith, R. P. Stefanik, A. Szentgyorgyi

摘要:

我们报告了卡塔尔-1b的发现和初步特征,这是一颗热木星,绕着一颗富含金属的K矮星运行,这是Alsubai项目系外行星过境调查发现的第一颗行星。我们描述的战略用于选择候选凌日行星的测光产生的Alsubai项目仪器。我们检查的天体物理和其他误报率光谱侦察过程中发现的第一批候选人。同时拟合卡塔尔-1b后续的径向速度和测光,得出行星质量为1.09+/-0.08 Mjup,半径为1.16+/-0.05 Rjup。轨道周期和间隔为1.420033天和0.0234天文单位的轨道假设是圆形的。恒星密度、有效温度和自转速率表明该系统的年龄大于4 Gyr。

英文摘要:

We report the discovery and initial characterisation of Qatar-1b, a hot Jupiter orbiting a metal-rich K dwarf star, the first planet discovered by the Alsubai Project exoplanet transit survey. We describe the strategy used to select candidate transiting planets from photometry generated by the Alsubai Project instrument. We examine the rate of astrophysical and other false positives found during the spectroscopic reconnaissance of the initial batch of candidates. A simultaneous fit to the follow-up radial velocities and photometry of Qatar-1b yield a planetary mass of 1.09+/-0.08 Mjup and a radius of 1.16+/-0.05 Rjup. The orbital period and separation are 1.420033 days and 0.0234 AU for an orbit assumed to be circular. The stellar density, effective temperature and rotation rate indicate an age greater than 4 Gyr for the system.

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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