论文标题
使用CCD VI，2 Mass和Gaia DR2天文统计的开放群集国王13的研究
Study of open cluster King 13 using CCD VI, 2MASS and Gaia DR2 Astrometry
论文作者
论文摘要
在本文中，我们根据VI CCD和2 Mass JHKS光度数据介绍了开放群集国王13的天体物理参数。这是一个研究良好的群集，在本工作中发现了新的结果。为了识别可能的成员，我们使用GAIA DR2目录的正确运动数据。群集的平均正确运动被确定为-2.8 \ pm 0.2和-0.88 \ pm 0.14 mas yr {-1}，群集范围得出为3'.2。使用颜色标记图，我们分别估计集群的年龄和距离为510 \ pm 60 Myr和3.84 \ pm 0.15 kpc。使用颜色图确定簇沿簇方向的星际红色E（B-V）确定为0.80 \ pm 0.2 mag。发现群集的质量函数斜率与Salpeter值相当。该集群的总质量得出为270 m _ {\ odot}。目前的分析表明，King 13是一个动态放松的集群。
In this paper, we present astrophysical parameters of the open cluster King 13 based on the VI CCD and 2MASS JHKs photometric data. This is a poorly studied cluster, for which new results have been found in the present work. To identify probable members, we use proper motion data from Gaia DR2 catalogue. The mean proper motion of the cluster is determined as -2.8 \pm 0.2 and -0.88 \pm 0.14 mas yr{-1} and cluster extent is derived as 3'.2. Using color-magnitude diagrams, we estimate the age and distance of the cluster as 510 \pm 60 Myr and 3.84 \pm 0.15 kpc respectively. Interstellar reddening E(B-V) in the direction of the cluster is determined as 0.80 \pm 0.2 mag using color-color diagram. Mass function slope of the cluster is found to be comparable with the Salpeter value. The total mass of this cluster is derived as 270 M_{\odot}. The present analysis shows that King 13 is a dynamically relaxed cluster.
