Open AccessLISC Catalog of Star Clusters. I. Galactic Disk Clusters in Gaia EDR3
Author(s) -
Zhongmu Li,
Yangyang Deng,
Huanbin Chi,
Jing Chen,
Xuejie Liu,
Chen Yan,
Wen Chen,
Wenkai Guo,
Xutang Tao
Publication year - 2022
Publication title -
the astrophysical journal. supplement series/astrophysical journal. supplement series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.546
H-Index - 277
eISSN - 1538-4365
pISSN - 0067-0049
DOI - 10.3847/1538-4365/ac3c49
Subject(s) - astrophysics , physics , open cluster , star cluster , metallicity , star (game theory) , cluster (spacecraft) , distance modulus , stars , blue straggler , population , star count , binary number , binary star , astronomy , computer science , k type main sequence star , t tauri star , demography , sociology , programming language , arithmetic , mathematics
This work searches for the candidates of Galactic disk star clusters in Gaia Early Data Release 3 (Gaia EDR3) and determines their basic parameters from color–magnitude diagrams (CMDs). A friends-of-friends method for membership determination and stellar population models including binary stars (ASPS) and rotating stars are adopted. As a result, 868 new star cluster candidates are found, besides 2729 known ones. When checking the CMD of each candidate, 61 new candidates show main sequences including a turnoff, which suggests that they are real star clusters. The basic parameters, including distance modulus, color excess, metallicity, age (or age range), primordial binary fraction, and rotating star fraction, are determined carefully by fitting the morphologies of CMDs of 61 newly identified star clusters and 594 known star clusters, which have relatively clear main sequences. The CMDs are fitted in considerable detail to ensure the reliability of property parameters of clusters. All final results are included in a new star cluster catalog, which is named LI team’s Star Cluster (LISC), and the catalog is available in the Zenodo repository.