论文标题
太阳能类似物的旋转交叉匹配开普勒和Gaia DR2
Rotation of solar analogs cross-matching Kepler and Gaia DR2
论文作者
论文摘要
从开普勒任务数据中解释主要序列恒星的旋转周期分布的主要障碍是缺乏这些对象的精确进化状态。我们通过根据GAIA数据发布2次透视和光度法研究了30,000多个开普勒恒星，并通过旋转周期测量来解决这一问题。其中许多是子巨人，应在以后的矮人工作中排除。我们特别研究了193星的太阳能类似物样本，并报告了其中125例新确定的旋转周期。其中包括来自先前样品的54颗恒星，其中可以确认50个周期。其余的是新的，其中10个比太阳旋转期更长，这表明像太阳一样的恒星继续在太阳时代过去的主要序列上旋转。我们的太阳能模拟样本可能有可能作为柏拉图等未来任务的基准，并强调需要在解释恒星种群和时间序列调查结果之前需要额外的星形，光度法和光谱信息。
A major obstacle to interpreting the rotation period distribution for main-sequence stars from Kepler mission data has been the lack of precise evolutionary status for these objects. We address this by investigating the evolutionary status based on Gaia Data Release 2 parallaxes and photometry for more than 30,000 Kepler stars with rotation period measurements. Many of these are subgiants, and should be excluded in future work on dwarfs. We particularly investigate a 193-star sample of solar analogs, and report newly-determined rotation periods for 125 of these. These include 54 stars from a prior sample, of which can confirm the periods for 50. The remainder are new, and 10 of them longer than solar rotation period, suggesting that sun-like stars continue to spin down on the main sequence past solar age. Our sample of solar analogs could potentially serve as a benchmark for future missions such as PLATO, and emphasizes the need for additional astrometric, photometric, and spectroscopic information before interpreting the stellar populations and results from time-series surveys.
