论文标题
金牛座星形地区的人口普查以及与盖亚的相邻关联
A Census of the Taurus Star-forming Region and Neighboring Associations with Gaia
论文作者
论文摘要
我已经使用了GAIA（DR3）第三个数据释放的高精度光度法和天文学来对金牛座恒星形成区域的成员和附近的年轻关联进行调查。这项工作制作了一个新的目录，由金牛座的532名收养成员组成，相对于Esplin＆Luhman 2019年的先前目录，其更改只有很小的变化。我使用Gaia Astermentry将金牛座成员分为具有独特运动学的13组。同时，我确定了金牛座附近七个协会的1378名候选人。所有这些关联都有光谱类型的直方图，在M5接近（〜0.15 MSUN）的峰值上，类似于太阳邻居中的其他年轻人群。对于金牛座群和相邻的关联，我从赫尔茨斯普朗 - 鲁塞尔图中的低质量恒星序列中估计了年龄。大多数金牛座群体的中位年龄为〜1-3 Myr，而关联的年龄从13至56 Myr不等。我已经使用了宽场红外调查探险家中的中红外光度法来搜索协会候选人中偶尔磁盘的过量发射。检测到51颗恒星的磁盘，其中20颗是在这项工作中首次报告的。最近的一些研究提出，在金牛座附近发现的老恒星（> = 10 Myr）的样品代表与金牛座云配合物相关的分布式种群。但是，我发现大多数恒星具有与金牛座任何关系不一致的运动学。
I have used high-precision photometry and astrometry from the third data release of Gaia (DR3) to perform a survey for members of the Taurus star-forming region and young associations in its vicinity. This work has produced a new catalog of 532 adopted members of Taurus, which has only minor changes relative to the previous catalog from Esplin & Luhman 2019. I have used the Gaia astrometry to divide the Taurus members into 13 groups that have distinct kinematics. Meanwhile, I have identified 1378 candidate members of seven associations near Taurus. All of these associations have histograms of spectral types that peak near M5 (~0.15 Msun), resembling other young populations in the solar neighborhood. For the Taurus groups and neighboring associations, I have estimated ages from their sequences of low-mass stars in Hertzsprung-Russell diagrams. Most of the Taurus groups have median ages of ~1-3 Myr while the associations have ages ranging from 13 to 56 Myr. I have used mid-infrared photometry from the Wide-field Infrared Survey Explorer to search for excess emission from circumstellar disks among the candidate members of the associations. Disks are detected for 51 stars, 20 of which are reported for the first time in this work. Some recent studies have proposed that samples of older stars (>=10 Myr) found in the vicinity of Taurus represent a distributed population that is associated with the Taurus cloud complex. However, I find that most of those stars have kinematics that are inconsistent with any relationship with Taurus.
