论文标题
低质量球状簇E3的破坏
The disruption of the low-mass globular cluster E3
论文作者
论文摘要
我们使用{\ it Gaia} Dr2光度法和正确的运动来搜索银河球簇E \，3的假设潮汐尾巴。使用经典去污染过程的修改版本，我们能够确定从其中心的群集到$ r \ sim 1 $ \ deg的扩展结构的存在，从而表明这个研究不佳的集群正在经历潮汐破坏过程。这些低表面亮度结构与靠近其周围的簇的簇预期的那样，与前往银河中心的方向对齐。讨论了不同的情况来解释该集群损失的重要质量。
We use {\it Gaia} DR2 photometry and proper motions to search for the hypothetical tidal tails of the Galactic globular cluster E\,3. Using a modified version of a classical decontamination procedure, we are able to identify the presence of an extended structure emerging from the cluster up to $r \sim 1$\,deg from its center, thus suggesting that this poorly studied cluster is undergoing a tidal disruption process. These low surface-brightness structures are aligned with the direction to the Galactic center, as expected for a cluster close to its perigalacticon. Different scenarios to explain the important amount of mass lost by this cluster are discussed.
