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A detection of the layered structure of nearby open clusters

Authors :
Hu, Qingshun
Zhang, Yu
Esamdin, Ali
Wang, Hong
Qin, Mingfeng
Source :
A&A 672, A12 (2023)
Publication Year :
2023

Abstract

We applied the newly developed rose diagram overlay method to detect the layered structure of 88 nearby open clusters ($\leq$500~pc) on the three projections after the distance correction of their member stars, based on the catalog in literature. The results show that with the rose diagram overlay method, a total of 74 clusters in our sample have a layered structure, while the remaining clusters are without a clear layered structure. We for the first time defined the layered structure parameters for the sample clusters. Meanwhile, we found that the layered circle core area ($s$) has a strong positive correlation with the number of cluster members, while the kernel instability index ($\eta$) has a strong negative correlation with the number of cluster members. Our study provides a novel perspective for the detection of the layered structure of open clusters.<br />Comment: 11 pages, 9 figures, 6 tables, accepted for publication in A&A

Details

Database :
arXiv
Journal :
A&A 672, A12 (2023)
Publication Type :
Report
Accession number :
edsarx.2302.02750
Document Type :
Working Paper
Full Text :
https://doi.org/10.1051/0004-6361/202244199