Subhaloes gone Notts: spin across subhaloes and finders
文献类型：期刊论文
| 作者 | Onions, Julian1; Ascasibar, Yago2; Behroozi, Peter3,4,5; Casado, Javier2; Elahi, Pascal1,6; Han, Jiaxin6,7,8; Knebe, Alexander2; Lux, Hanni1; Merchan, Manuel E.9; Muldrew, Stuart I.1 |
| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
 |
| 出版日期 | 2013-03-01 |
| 卷号 | 429期号:3页码:2739-2747 |
| 关键词 | galaxies: evolution galaxies: haloes cosmology: theory dark matter |
| 英文摘要 | We present a study of a comparison of spin distributions of subhaloes found associated with a host halo. The subhaloes are found within two cosmological simulation families of Milky Way-like galaxies, namely the Aquarius and GHALO simulations. These two simulations use different gravity codes and cosmologies. We employ 10 different substructure finders, which span a wide range of methodologies from simple overdensity in configuration space to full 6D phase space analysis of particles. We subject the results to a common post-processing pipeline to analyse the results in a consistent manner, recovering the dimensionless spin parameter. We find that spin distribution is an excellent indicator of how well the removal of background particles (unbinding) has been carried out. We also find that the spin distribution decreases for substructures the nearer they are to the host haloes, and that the value of the spin parameter rises with enclosed mass towards the edge of the substructure. Finally, subhaloes are less rotationally supported than field haloes, with the peak of the spin distribution having a lower spin parameter. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | DARK-MATTER HALOES ; SMOOTHED PARTICLE HYDRODYNAMICS ; GALAXY FORMATION ; ANGULAR-MOMENTUM ; FINDING ALGORITHM ; DISK GALAXIES ; EVOLUTION ; SIMULATIONS ; UNIVERSE ; LAMBDA |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000318271300068 |
| 源URL | [http://119.78.226.72/handle/331011/18051]  |
| 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 Autonoma Madrid, Fac Ciencias, Dept Fis Teor, E-28049 Madrid, Spain 3.Kavli Inst Particle Astrophys & Cosmol, Stanford, CA 94309 USA 4.Stanford Univ, Dept Phys, Stanford, CA 94305 USA 5.SLAC Natl Accelerator Lab, Menlo Pk, CA 94025 USA 6.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 7.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China 8.Univ Durham, Dept Phys, Inst Computat Cosmol, Durham DH1 3LE, England 9.UNC, CONICET, CCT Cordoba, Inst Astron Teor & Expt, Cordoba, Argentina 10.Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA |
| 推荐引用方式 GB/T 7714 | Onions, Julian,Ascasibar, Yago,Behroozi, Peter,et al. Subhaloes gone Notts: spin across subhaloes and finders[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2013,429(3):2739-2747. |
| APA | Onions, Julian.,Ascasibar, Yago.,Behroozi, Peter.,Casado, Javier.,Elahi, Pascal.,...&Yue, Thomas.(2013).Subhaloes gone Notts: spin across subhaloes and finders.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,429(3),2739-2747. |
| MLA | Onions, Julian,et al."Subhaloes gone Notts: spin across subhaloes and finders".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 429.3(2013):2739-2747. |
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