论文标题
重新访问Open Clusters UPK 39，UPK 41和PHOC 39：发现了一个新的二进制开放群集
Revisit of open clusters UPK 39, UPK 41 and PHOC 39 : a new binary open cluster found
论文作者
论文摘要
我们研究了Aquila Rift Cloud附近的三个开放群集，称为UPK 39（\ texttt {C1}），UPK 41（\ texttt {C2}）在Sim等人中。 （2019年）和Phoc 39（\ texttt {C3}以下内容）分别在Hunt \＆Reffert（2021）中。使用Gaia DR3的光度法，变红和灭绝，我们构建了颜色吸收性磁性图（CAMD）。使用同句拟合其年龄估计为$ 6.3 \ pm0.9 $，$ 8.1 \ pm1.4 $和$ 21.8 \ pm2.2 $ MYR。使用来自Gaia和Lamost的数据估算的它们的适当运动和径向速度非常相似。从它们的轨道上，它们之间的相对距离在不同的时间，运动学，年龄和金属性，我们得出结论，\ texttt {c1}和\ texttt {c2}是原始的二进制二进制开放群集，这些群集可能是同一时间形成的，并且可能是在\ texttt {c3}中捕获{c3} c1 c1 c1 c1 c1 c11未来。
We investigate the three open clusters near Aquila Rift cloud, named as UPK 39 (\texttt{c1} hereafter), UPK 41 (\texttt{c2} hereafter) in Sim et al. (2019) and PHOC 39 (\texttt{c3} hereafter) in Hunt \& Reffert (2021), respectively. Using photometric passpands, reddening, and extinction from Gaia DR3, we construct the color-absolute-magnitude diagram (CAMD). Using isochrone fits their ages are estimated as $6.3\pm0.9$, $8.1\pm1.4$ and $21.8\pm2.2$ Myr, respectively. Their proper motions and radial velocities, estimated using data from Gaia and LAMOST are very similar. From their orbits, relative distances among them at different times, kinematics, ages, and metallicities, we conclude that \texttt{c1} and \texttt{c2} are primordial binary open cluster, which are likely to have been formed at the same time, and \texttt{c3} may capture \texttt{c1}, \texttt{c2} in the future.
