Galaxy cluster mass reconstruction project - I. Methods and first results on galaxy-based techniques
文献类型：期刊论文
| 作者 | Old, L.1; Skibba, R. A.2; Pearce, F. R.1; Croton, D.3; Muldrew, S. I.1; Munoz-Cuartas, J. C.4; Gifford, D.5; Gray, M. E.1; von der Linden, A.6,7,8; Mamon, G. A.9,10 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2014-06-01 |
| 卷号 | 441期号:2页码:1513-1536 |
| 关键词 | methods: numerical methods: statistical galaxies: clusters: general galaxies: haloes galaxies: kinematics and dynamics cosmology: observations |
| 英文摘要 | This paper is the first in a series in which we perform an extensive comparison of various galaxy-based cluster mass estimation techniques that utilize the positions, velocities and colours of galaxies. Our primary aim is to test the performance of these cluster mass estimation techniques on a diverse set of models that will increase in complexity. We begin by providing participating methods with data from a simple model that delivers idealized clusters, enabling us to quantify the underlying scatter intrinsic to these mass estimation techniques. The mock catalogue is based on a Halo Occupation Distribution (HOD) model that assumes spherical Navarro, Frenk and White (NFW) haloes truncated at R-200, with no substructure nor colour segregation, and with isotropic, isothermal Maxwellian velocities. We find that, above 10(14)M(aS (TM)), recovered cluster masses are correlated with the true underlying cluster mass with an intrinsic scatter of typically a factor of 2. Below 10(14)M(aS (TM)), the scatter rises as the number of member galaxies drops and rapidly approaches an order of magnitude. We find that richness-based methods deliver the lowest scatter, but it is not clear whether such accuracy may simply be the result of using an over-simplistic model to populate the galaxies in their haloes. Even when given the true cluster membership, large scatter is observed for the majority non-richness-based approaches, suggesting that mass reconstruction with a low number of dynamical tracers is inherently problematic. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DIGITAL SKY SURVEY ; DARK-MATTER HALOS ; INTERNAL VELOCITY DISPERSIONS ; MORPHOLOGY-DENSITY RELATION ; ADAPTIVE MATCHED-FILTER ; LARGE-SCALE STRUCTURE ; SDSS REDSHIFT SURVEY ; X-RAY-CLUSTERS ; DATA RELEASE ; RED-SEQUENCE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000336494800047 |
| 源URL | [http://119.78.226.72/handle/331011/18178]  |
| 专题 | 上海天文台_星系宇宙学重点实验室 |
| 作者单位 | 1.Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England 2.Univ Calif San Diego, Dept Phys, Ctr Astrophys & Space Sci, San Diego, CA 92093 USA 3.Swinburne Univ Technol, Ctr Astrophys Supercomp, Hawthorn, Vic 3122, Australia 4.Univ Antioquia, Inst Fis, Grp Computat Phys & Astrophys, Medellin, Colombia 5.Univ Michigan, Dept Astron, Ann Arbor, MI 48109 USA 6.Univ Copenhagen, Niels Bohr Inst, Dark Cosmol Ctr, DK-2100 Copenhagen, Denmark 7.Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94305 USA 8.Stanford Univ, Dept Phys, Stanford, CA 94305 USA 9.CNRS, UMR 7095, Inst Astrophys Paris, F-75014 Paris, France 10.UPMC, F-75014 Paris, France |
| 推荐引用方式 GB/T 7714 | Old, L.,Skibba, R. A.,Pearce, F. R.,et al. Galaxy cluster mass reconstruction project - I. Methods and first results on galaxy-based techniques[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,441(2):1513-1536. |
| APA | Old, L..,Skibba, R. A..,Pearce, F. R..,Croton, D..,Muldrew, S. I..,...&Wojtak, R..(2014).Galaxy cluster mass reconstruction project - I. Methods and first results on galaxy-based techniques.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,441(2),1513-1536. |
| MLA | Old, L.,et al."Galaxy cluster mass reconstruction project - I. Methods and first results on galaxy-based techniques".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 441.2(2014):1513-1536. |
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