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arXiv 1108.4205astro-ph.EPastro-ph.SR
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退休的A星及其同伴：18颗新的木星行星

Retired A Stars and Their Companions: Eighteen New Jovian Planets

John Asher Johnson, Christian Clanton, Andrew W. Howard, Brendan P. Bowler, Gregory W. Henry, Geoffrey W. Marcy, Justin R. Crepp, Michael Endl, William D. Cochr… 展开作者

John Asher Johnson, Christian Clanton, Andrew W. Howard, Brendan P. Bowler, Gregory W. Henry, Geoffrey W. Marcy, Justin R. Crepp, Michael Endl, William D. Cochran, Phillip J. MacQueen, Jason T. Wright, Howard Isaacson

备注：
ApJS accepted. The \rotate command prevented proper compilation. As a result Tables 19 and 21 do not fit onto the page, causing the final columns (S_HK, Nobs, respectively) to be omitted
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摘要：

我们报告发现的18个木星行星作为我们的亚巨星在凯克天文台的多普勒调查的一部分，与后续的多普勒和测光观测在麦当劳和费尔伯恩天文台，分别。主恒星的质量为0.927 <Mstar/Msun <1.95，半径为2.5 <Rstar/Rsun <8.7，金属丰度为-0.46 <[Fe/H]<+0.30。这些行星的最小质量为0.9 MJup &lt;MP sin i 0.76 AU。<3 MJup and semima jor axes a >这些探测代表了已知的行星数量增加了50%，这些行星围绕着质量大于1.5 Msun的恒星运行，并提供了关于质量大于太阳的恒星周围行星性质的有价值的额外信息。

英文摘要：

We report the detection of eighteen Jovian planets discovered as part of our Doppler survey of subgiant stars at Keck Observatory, with follow-up Doppler and photometric observations made at McDonald and Fairborn Observatories, respectively. The host stars have masses 0.927 < Mstar /Msun < 1.95, radii 2.5 < Rstar/Rsun < 8.7, and metallicities -0.46 < [Fe/H] < +0.30. The planets have minimum masses 0.9 MJup < MP sin i <3 MJup and semima jor axes a > 0.76 AU. These detections represent a 50% increase in the number of planets known to orbit stars more massive than 1.5 Msun and provide valuable additional information about the properties of planets around stars more massive thantheSun.

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