A Catalog of 1.58 Million Clusters of Galaxies Identified from the DESI Legacy Imaging Surveys

被引：19

作者：

Wen, Z. L. ^{[1
,2
]}

Han, J. L. ^{[1
,2
,3
]}

机构：

[1] Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100101, Peoples R China

[2] Chinese Acad Sci, CAS Key Lab FAST, NAOC, Chaoyang Dist, Beijing 100101, Peoples R China

[3] Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China

来源：

ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES | 2024年 / 272卷 / 02期

基金：

中国国家自然科学基金;

关键词：

DARK ENERGY SURVEY; EQUATORIAL-DEPTH SURVEY; HYPER SUPRIME-CAM; ATACAMA COSMOLOGY TELESCOPE; STELLAR MASS GROWTH; RICH CLUSTERS; PHOTOMETRIC REDSHIFTS; FINDING ALGORITHM; OPTICAL CATALOG; INFRARED SURVEY;

D O I：

10.3847/1538-4365/ad409d

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on the DESI Legacy Imaging Surveys released data and available spectroscopic redshifts, we identify 1.58 million clusters of galaxies by searching for the overdensity of the stellar mass distribution of galaxies within redshift slices around preselected massive galaxies, with 877,806 clusters being found for the first time. The identified clusters have an equivalent mass of M 500 >= 0.47 x 1014 M circle dot with an uncertainty of 0.2 dex. The redshift distribution of clusters extends to z similar to 1.5, and 338,841 clusters have spectroscopic redshifts. Our cluster sample includes most of the rich optical clusters in previous catalogs, more than 95% of the massive Sunyaev-Zeldovich clusters, and 90% of the ROSAT and eROSITA X-ray clusters. From the light distributions of the member galaxies, we derive the dynamical state parameters for 27,685 rich clusters and find no significant evolution of the dynamical state with redshift. We find that the stellar mass of the brightest cluster galaxies grows by a factor of 2 since z = 1.

引用

页数：15

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