A detection of the layered structure of nearby open clusters

被引：4

作者：

Hu, Qingshun ^{[1
,2
]}

Zhang, Yu ^{[1
,2
]}

Esamdin, Ali ^{[1
,2
]}

Wang, Hong ^{[1
,2
]}

Qin, Mingfeng ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China

[2] Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China

来源：

ASTRONOMY & ASTROPHYSICS | 2023年 / 672卷

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

methods: statistical; open clusters and associations: general; galaxies: stellar content; MASS SEGREGATION; EVOLUTION; !text type='PYTHON']PYTHON[!/text; SHAPE; PARAMETERS; MORPHOLOGY; DISTANCES; ASTROPY;

D O I：

10.1051/0004-6361/202244199

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We applied the newly developed rose diagram overlay method to detect the layered structure of 88 nearby open clusters (=500pc) 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 (N) 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.

引用

页数：12

共 50 条

[21] Miec: A Bayesian hierarchical model for the analysis of nearby young open clusters
Olivares, J.
Bouy, H.
Sarro, L. M.
Moraux, E.
Berihuete, A.
Galli, P. A. B.
Miret-Roig, N.
ASTRONOMY & ASTROPHYSICS, 2021, 649
[22] OPEN CLUSTERS AND GALACTIC STRUCTURE
JANES, K
ADLER, D
ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1982, 49 (03): : 425 - 445
[23] OPEN CLUSTERS AND GALACTIC STRUCTURE
PANDEY, AK
BHATT, BC
MAHRA, HS
ASTRONOMY & ASTROPHYSICS, 1988, 189 (1-2) : 66 - 69
[24] Spiral-like structure at the centre of nearby clusters of galaxies
Lagana, T. F.
Andrade-Santos, F.
Lima Neto, G. B.
ASTRONOMY & ASTROPHYSICS, 2010, 511
[25] Spiral-like structure in the core of nearby galaxy clusters
Lagana, Tatiana F.
Andrade-Santos, Felipe
Lima Neto, Gastao B.
X-RAY ASTRONOMY-2009: PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES, PROCEEDINGS, 2010, 1248 : 297 - 299
[26] Globular clusters in nearby galaxy clusters
Hilker, M
EXTRA-GALACTIC GLOBULAR CLUSTER SYSTEMS, 2003, : 173 - 178
[27] UBVRI OBSERVATIONS OF STARS IN THE FIELDS OF 5 OPEN CLUSTERS WITH NEARBY CARBON STARS
JORGENSEN, UG
WESTERLUND, BE
ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1988, 72 (02): : 193 - 208
[28] Do Hipparcos distances of nearby open clusters really disagree with the HR diagram?
Robichon, N
Lebreton, Y
Turon, C
Mermilliod, JC
STELLAR CLUSTERS AND ASSOCIATIONS: CONVECTION, ROTATION, AND DYNAMOS, 2000, 198 : 141 - 144
[29] Open star clusters and Galactic structure
Joshi, Yogesh C.
ASTROMETRY AND ASTROPHYSICS IN THE GAIA SKY, 2018, 12 (S330): : 227 - 228
[30] piRNA clusters and open chromatin structure
Yamanaka, Soichiro
Siomi, Mikiko C.
Siomi, Haruhiko
MOBILE DNA, 2014, 5

← 1 2 3 4 5 →