An Extended Halo-based Group/Cluster Finder: Application to the DESI Legacy Imaging Surveys DR8
文献类型：期刊论文
| 作者 | Yang,Xiaohu8,9; Xu,Haojie8; He,Min8; Gu,Yizhou8; Katsianis,Antonios9; Meng,Jiacheng12; Shi,Feng10; Zou,Hu11 ; Zhang,Youcai6; Liu,Chengze8
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| 刊名 | The Astrophysical Journal
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| 出版日期 | 2021-03-01 |
| 卷号 | 909期号:2 |
| 关键词 | Dark matter Dark matter distribution Large-scale structure of the universe Galaxies Galaxy groups Galaxy clusters Galaxy dark matter halos |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abddb2 |
| 英文摘要 | Abstract We extend the halo-based group finder developed by Yang et al. (2005c) to use data simultaneously with either photometric or spectroscopic redshifts. A mock galaxy redshift survey constructed from a high-resolution N-body simulation is used to evaluate the performance of this extended group finder. For galaxies with magnitude z ≤ 21 and redshift 0 < z ≤ 1.0 in the DESI legacy imaging surveys (the Legacy Surveys), our group finder successfully identifies more than 60% of the members in about 90% of halos with mass ?1012.5 h?1 M⊙. Detected groups with mass ?1012.0 h?1 M⊙ have a purity (the fraction of true groups) greater than 90%. The halo mass assigned to each group has an uncertainty of about 0.2 dex at the high-mass end ?1013.5 h?1 M⊙ and 0.45 dex at the low-mass end. Groups with more than 10 members have a redshift accuracy of ～0.008. We apply this group finder to the Legacy Surveys DR8 and find 6.4 million groups with at least three members. About 500,000 of these groups have at least 10 members. The resulting catalog containing 3D coordinates, richness, halo masses, and total group luminosities is made publicly available. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-909-2-ABDDB2 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/59868]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Yang,Xiaohu |
| 作者单位 | 1.Key Laboratory for Research in Galaxies and Cosmology, Department of Astronomy, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 2.School of Astronomy and Space Science, University of Science and Technology of China, Hefei, Anhui 230026, People’s Republic of China 3.Department of Astronomy, University of Massachusetts, Amherst, MA 01003, USA 4.Department of Astronomy and Astrophysics, University of California, Santa Cruz, 1156 High Street, Santa Cruz, CA 95064, USA 5.Purple Mountain Observatory, No. 10 Yuanhua Road, Nanjing 210033, People’s Republic of China 6.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Nandan Road 80, Shanghai 200030, People’s Republic of China 7.School of Physics, Korea Institute for Advanced Study, 85 Heogiro, Dongdaemun-gu, Seoul, 02455, Republic of Korea 8.Department of Astronomy, School of Physics and Astronomy, and Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China; xyang@sjtu.edu.cn 9.Tsung-Dao Lee Institute, and Key Laboratory for Particle Physics, Astrophysics and Cosmology, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, People’s Republic of China 10.Korea Astronomy and Space Science Institute, Yuseong-gu, Daedeok-daero 776, Daejeon 34055, Republic of Korea |
| 推荐引用方式 GB/T 7714 | Yang,Xiaohu,Xu,Haojie,He,Min,et al. An Extended Halo-based Group/Cluster Finder: Application to the DESI Legacy Imaging Surveys DR8[J]. The Astrophysical Journal,2021,909(2). |
| APA | Yang,Xiaohu.,Xu,Haojie.,He,Min.,Gu,Yizhou.,Katsianis,Antonios.,...&Zu,Ying.(2021).An Extended Halo-based Group/Cluster Finder: Application to the DESI Legacy Imaging Surveys DR8.The Astrophysical Journal,909(2). |
| MLA | Yang,Xiaohu,et al."An Extended Halo-based Group/Cluster Finder: Application to the DESI Legacy Imaging Surveys DR8".The Astrophysical Journal 909.2(2021). |
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