An empirical model to form and evolve galaxies in dark matter halos
文献类型：期刊论文
| 作者 | Li, Shi-Jie1,6; Zhang, You-Cai1; Yang, Xiao-Hu2,3; Wang, Hui-Yuan4; Tweed, Dylan2; Liu, Cheng-Ze2; Yang, Lei2; Shi, Feng1,6; Lu, Yi1; Luo, Wen-Tao1 |
| 刊名 | Research in astronomy and astrophysics
 |
| 出版日期 | 2016-08-01 |
| 卷号 | 16期号:8页码:130-u126 |
| ISSN号 | 1674-4527 |
| 关键词 | Cosmology: dark matter Galaxies: formation Galaxies: halos |
| DOI | 10.1088/1674-4527/16/8/130 |
| 通讯作者 | Li, shi-jie(sjli@shao.ac.cn) |
| 英文摘要 | Based on the star formation histories of galaxies in halos with different masses, we develop an empirical model to grow galaxies in dark matter halos. this model has very few ingredients, any of which can be associated with observational data and thus be efficiently assessed. by applying this model to a very high resolution cosmological n-body simulation, we predict a number of galaxy properties that are a very good match to relevant observational data. namely, for both centrals and satellites, the galaxy stellar mass functions up to redshift z similar or equal to 4 and the conditional stellar mass functions in the local universe are in good agreement with observations. in addition, the two point correlation function is well predicted in the different stellar mass ranges explored by our model. furthermore, after applying stellar population synthesis models to our stellar composition as a function of redshift, we find that the luminosity functions in the 0.1(u), 0.1(g), 0.1(r), 0.1(i) and 0.1(z) bands agree quite well with the sdss observational results down to an absolute magnitude at about -17.0. the sdss conditional luminosity function itself is predicted well. finally, the cold gas is derived from the star formation rate to predict the hi gas mass within each mock galaxy. we find a remarkably good match to observed hi-to-stellar mass ratios. these features ensure that such galaxy/gas catalogs can be used to generate reliable mock redshift surveys. |
| WOS关键词 | STAR-FORMATION HISTORIES ; ACTIVE GALACTIC NUCLEI ; I MASS FUNCTION ; STELLAR MASS ; LUMINOSITY FUNCTION ; SEMIANALYTIC MODEL ; LOCAL UNIVERSE ; VELOCITY DISPERSION ; ACCRETION HISTORIES ; BAYESIAN-INFERENCE |
| WOS研究方向 | Astronomy & Astrophysics |
| WOS类目 | Astronomy & Astrophysics |
| 语种 | 英语 |
| 出版者 | NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES |
| WOS记录号 | WOS:000381832700013 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2375658 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, Shi-Jie |
| 作者单位 | 1.Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, Shanghai 200030, Peoples R China 2.Shanghai Jiao Tong Univ, Ctr Astron & Astrophys, Shanghai 200240, Peoples R China 3.Shanghai Jiao Tong Univ, IFSA Collaborat Innovat Ctr, Shanghai 200240, Peoples R China 4.Univ Sci & Technol China, Dept Astron, Key Lab Res Galaxies & Cosmol, Hefei 230026, Peoples R China 5.Shanghai Jiao Tong Univ, Ctr High Performance Comp, Shanghai 200240, Peoples R China 6.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Shi-Jie,Zhang, You-Cai,Yang, Xiao-Hu,et al. An empirical model to form and evolve galaxies in dark matter halos[J]. Research in astronomy and astrophysics,2016,16(8):130-u126. |
| APA | Li, Shi-Jie.,Zhang, You-Cai.,Yang, Xiao-Hu.,Wang, Hui-Yuan.,Tweed, Dylan.,...&Wei, Jian-Wen.(2016).An empirical model to form and evolve galaxies in dark matter halos.Research in astronomy and astrophysics,16(8),130-u126. |
| MLA | Li, Shi-Jie,et al."An empirical model to form and evolve galaxies in dark matter halos".Research in astronomy and astrophysics 16.8(2016):130-u126. |
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来源：中国科学院大学
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