论文标题
基于Gaia Dr2的白色矮人开放群集关联
White dwarf-open cluster associations based on Gaia DR2
论文作者
论文摘要
通过在开放式簇中发现WD（OC），可以限制和完善导致形成白色矮人（WDS）的基本参数和物理过程。可以利用集群成员资格来建立此类WDS的确切距离，亮度，年龄和祖细胞。我们编制了可能是OC成员的可能的WD列表，以促进对银河场WD的不切实际或难以进行的WD研究。我们使用\ textit {gaia}卫星任务（GDR2）的第二个数据发布的WD和OC的目录来识别OC成员的WD。该交叉匹配是通过GDR2和派生目录中包含的天文和光度数据来促进的。假设大多数WD成员都是DA类型的，我们估计WD质量，冷却年龄和祖细胞质量。我们已经检测到了几个可能的WD成员，并重新评估了以前与研究的OCS相关的文献WD的成员。几个恢复的WDS属于$ M_ {I} \ SIM 2.0 M _ {\ odot} $左右的初始最终质量关系（IFMR）最近报道的不连续性，这允许在此制度中对IFMR进行更严格的约束。
Fundamental parameters and physical processes leading to the formation of white dwarfs (WDs) may be constrained and refined by discovering WDs in open clusters (OCs). Cluster membership can be utilized to establish the precise distances, luminosities, ages, and progenitor masses of such WDs. We compile a list of probable WDs that are OC members in order to facilitate WD studies that are impractical or difficult to conduct for Galactic field WDs. We use recent catalogs of WDs and OCs that are based on the second data release of the \textit{Gaia} satellite mission (GDR2) to identify WDs that are OC members. This crossmatch is facilitated by the astrometric and photometric data contained in GDR2 and the derived catalogs. Assuming that most of the WD members are of the DA type, we estimate the WD masses, cooling ages, and progenitor masses. We have detected several new likely WD members and reassessed the membership of the literature WDs that had been previously associated with the studied OCs. Several of the recovered WDs fall into the recently reported discontinuity in the initial-final mass relation (IFMR) around $M_{i} \sim 2.0 M_{\odot}$, which allows for tighter constrains on the IFMR in this regime.
