Teutsch 76: A deep near-infrared study

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Journal of Astrophysics and Astronomy Pub Date : 2023-05-13 DOI:10.1007/s12036-023-09936-w

Saurabh Sharma, Lokesh Dewangan, Neelam Panwar, Harmeen Kaur, Devendra K. Ojha, Ramkesh Yadav, Aayushi Verma, Tapas Baug, Tirthendu Sinha, Rakesh Pandey, Arpan Ghosh, Tarak Chand

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引用次数: 1

Abstract

We have performed a detailed analysis on the Teutsch 76 (T76) open cluster using the deep near-infrared (NIR) observations taken with the TANSPEC instrument mounted on the 3.6m Devasthal optical telescope along with the recently available high quality proper motion data from the Gaia data release 3 and deep photometric data from Pan-STARRS1 survey. We have found that the T76 cluster is having a central density concentration with circular morphology, probably due to the star-formation processes. The radius of the T76 cluster is found to be 45\(^{\prime \prime }\) (1.24 pc) and 28 stars within this radius were marked as highly probable cluster members. We have found that the cluster is located at a distance of \(5.7\pm 1.0\) kpc and is having an age of \(50\pm 10\) Myr. The mass function slope (\(\Gamma \)) in the cluster region in the mass range of \(\sim \) \(0.75<M/M_\odot <5.8\) is estimated as \(-1.3\pm 0.2\), which is similar to the value of −1.35 given by Salpeter (1955). The cluster is not showing any signatures of mass-segregation and is currently undergoing dynamical relaxation.

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Teutsch 76:深近红外研究

我们对Teutsch 76 (T76)疏散星团进行了详细的分析，使用了安装在3.6m Devasthal光学望远镜上的TANSPEC仪器进行的深近红外(NIR)观测，以及最近从盖亚数据发布3中获得的高质量自适应运动数据和Pan-STARRS1调查的深光度数据。我们发现T76星团的中心密度有一个圆形的形态，可能是由于恒星形成的过程。T76星团的半径为45 \(^{\prime \prime }\) (1.24 pc)，在这个半径内有28颗恒星被标记为极可能的星团成员。我们发现这个星团位于\(5.7\pm 1.0\) kpc的距离上，年龄为\(50\pm 10\) Myr。聚类区域在\(\sim \)\(0.75<M/M_\odot <5.8\)质量范围内的质量函数斜率(\(\Gamma \))估计为\(-1.3\pm 0.2\)，与Salpeter(1955)给出的- 1.35值相似。该星团没有表现出任何质量分离的特征，目前正在经历动力学弛豫。

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来源期刊

Journal of Astrophysics and Astronomy 地学天文-天文与天体物理

CiteScore

1.80

自引率

9.10%

发文量

审稿时长

>12 weeks

期刊介绍： The journal publishes original research papers on all aspects of astrophysics and astronomy, including instrumentation, laboratory astrophysics, and cosmology. Critical reviews of topical fields are also published. Articles submitted as letters will be considered.