arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1607.01795astro-ph.SRastro-ph.GA
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VVV巡天五重星团中的变星

Variable Stars in the Quintuplet stellar cluster with the VVV Survey

C. Navarro Molina, J. Borissova, M. Catelan, J. Alonso-García, E. Kerins, R. Kurtev, P. W. Lucas, N. Medina, D. Minniti, I. Dékány

摘要:

五重星团是银河系中质量最大的星团之一,非常靠近银河系中心。我们提出了一个新的搜索变星在集群附近,使用五年的Vista变星数据库中的通过Lactea(VVV)ESO公众调查在近红外。总共有7586个对象被确定在从集群中心的$2'$周围的区域,使用55个$K_S$波段历元。33颗恒星显示出$K_S$波段的变化,其中24颗是以前未发现的。大多数发现的变星是慢/半规则变星,长周期的Mira型变星和OH/IR星。此外,我们的许多候选人在相当短的时间内表现出变化。我们还提出了四个年轻恒星对象(YSO)的候选人,这可能是集群成员。

英文摘要:

The Quintuplet cluster is one of the most massive star clusters in the Milky Way, situated very close to the Galactic center. We present a new search for variable stars in the vicinity of the cluster, using the five-year database of the Vista Variables in the Via Lactea (VVV) ESO Public Survey in the near-infrared. A total of 7586 objects were identified in the zone around $2'$ from the cluster center, using 55 $K_S$-band epochs. Thirty-three stars show $K_S$-band variability, 24 of them being previously undiscovered. Most of the variable stars found are slow/semiregular variables, long-period variables of the Mira type, and OH/IR stars. In addition, a good number of our candidates show variations in a rather short timescale. We also propose four Young Stellar Object (YSO) candidates, which could be cluster members.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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