论文标题
NGC 6819开放式二进制明星：KIC 5113146和KIC 5111815
Kepler Binary Stars in NGC 6819 Open Cluster: KIC 5113146 and KIC 5111815
论文作者
论文摘要
在这项研究中，基于光度法和光谱数据，对NGC 6819中两个双线二元星KIC 5113146和KIC 5111815进行了研究。对光和径向速度曲线进行了同时分析，并首次确定了系统组件的绝对参数。我们发现两个系统都有F型主序组件。群众和半径被发现为$ m_1 = 1.29 \ pm0.02 m _ {\ odot} $，$ r_ {1} = 1.47 \ pm0.03 r _ {\ odot} $和$ m_ {2} = 1.19 \ pm0.02 m _} $ r_ {2} = 1.13 \ pm0.02 r _ {\ odot} $用于KIC 5113146的主组件和辅助组件； $ m_ {1} = 1.51 \ pm0.08 m _ {\ odot} $，$ r_ {1} = 2.02 \ pm0.05 r _ {\ odot} $和$ m_ {2} = 1.19 = 1.19 \ pm0.07 m _ { r _ {\ odot} $分别用于KIC 5111815的组件。基于MESA进化轨迹和等线酮评估了组件的进化状态。 KIC 5111815和KIC 5113146的年龄分别为$ 2.50 \ pm0.35 $ gyr和$ 1.95 \ pm0.40 $ gyr。光度距离为2850美元\ pm 185 $ PC，用于KIC 5113146和$ 3120 \ pm 260 $ PC的KIC 5111815。在这项研究中获得的结果，Astoretric数据和文献研究中的研究表明，KIC 5113146和KIC 5111515 Systems均为NGC 689的最大可能成员。
In this study, investigation of two double-lined binary stars KIC 5113146 and KIC 5111815 in NGC 6819 is presented based on both photometric and spectroscopic data. Simultaneous analysis of light and radial velocity curves was made and the absolute parameters of the systems' components were determined for the first time. We find that both systems have F-type main-sequence components. The masses and radii were found to be $M_1=1.29\pm0.02 M_{\odot}$, $R_{1}=1.47\pm0.03 R_{\odot}$ and $M_{2}=1.19\pm0.02 M_{\odot}$, $R_{2}=1.13\pm0.02 R_{\odot}$ for the primary and secondary components of KIC 5113146; $M_{1}=1.51\pm0.08 M_{\odot}$, $R_{1}=2.02\pm0.05 R_{\odot}$ and $M_{2}=1.19\pm0.07 M_{\odot}$, $R_{2}=1.32\pm0.04 R_{\odot}$ for components of KIC 5111815, respectively. Evolutionary status of the components was evaluated based on the MESA evolutionary tracks and isochrones. The ages of the KIC 5111815 and KIC 5113146 were derived to be about $2.50\pm0.35$ Gyr and $1.95\pm0.40$ Gyr, respectively. Photometric distances were calculated to be $2850\pm 185$ pc for KIC 5113146 and $3120\pm 260$ pc for KIC 5111815. The results obtained in this study, astrometric data and researches in the literature reveal that both KIC 5113146 and KIC 5111815 systems are the most likely member of NGC 6819.
