Herschel-ATLAS/GAMA: How does the far-IR luminosity function depend on galaxy group properties?
文献类型：期刊论文
| 作者 | Guo, Qi1,2 ; Lacey, Cedric1; Norberg, Peder1; Cole, Shaun1; Baugh, Carlton1; Frenk, Carlos1; Cooray, Asantha3; Dye, Simon4; Bourne, N.4; Dunne, L.5
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| 刊名 | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| 出版日期 | 2014-08-11 |
| 卷号 | 442期号:3页码:2253-2270 |
| 关键词 | galaxies: clusters: general galaxies: formation galaxies: haloes galaxies: luminosity function mass function cosmology: theory infrared: galaxies |
| 英文摘要 | We use the Herschel Astrophysical Terahertz Large Area Survey (H-ATLAS) Phase I data to study the conditional luminosity function of far-IR (250 mu m) selected galaxies in optically selected galaxy groups from the Galaxy And Mass Assembly (GAMA) spectroscopic survey, as well as environmental effects on the far-IR-to-optical colour. We applied two methods, which gave consistent results for the far-IR conditional luminosity functions. The direct matching method matches H-ATLAS sources to GAMA/SDSS (Sloan Digital Sky Survey) galaxies, then links the optical counterparts to GAMA groups. The stacking method counts the number of far-IR sources within the projected radii of GAMA groups, subtracting the local background. We investigated the dependence of the far-IR (250 mu m) luminosity function on group mass in the range 10(12) < M-h < 10(14) h(-1) M-aS (TM) and on redshift in the range 0 < z < 0.4, using a sample of 3000 groups containing H-ATLAS sources with GAMA redshifts over an area of 126 deg(2). We find that the characteristic 250 mu m luminosity, L*(250), increases with group mass up to M-h similar to 10(13) h(-1) M-aS (TM), but is roughly constant above this, while it increases with redshift at high group masses, but less so at low masses. We also find that the group far-IR luminosity-to-mass ratio L(250)/M-h increases with redshift and is higher in low-mass groups. We estimate that around 70 per cent of the 250 mu m luminosity density in the local Universe is contributed by groups with M-h > 10(12) h(-1) M-aS (TM). We also find that the far-IR-to-optical colours of H-ATLAS galaxies are independent of group mass over the range 10(12) < M-h < 10(14) h(-1) M-aS (TM) in the local Universe. We also compare our observational results with recent semi-analytical models, and find that none of these galaxy formation models can reproduce the conditional far-IR luminosity functions of galaxy groups. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000339924300026 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6388]  |
| 专题 | 国家天文台_星系宇宙学研究部 |
| 作者单位 | 1.Univ Durham, Dept Phys, Inst Computat Cosmol, Durham DH1 3LE, England 2.Chinese Acad Sci, Natl Astron Observ, Max Planck Inst Astrophys, Partner Grp, Beijing 100012, Peoples R China 3.Univ Calif Irvine, Dept Phys & Astron, Irvine, CA 92697 USA 4.Univ Nottingham, Sch Phys & Astron, Nottingham NG7 2RD, England 5.Univ Canterbury, Dept Phys & Astron, Christchurch 1, New Zealand 6.Cardiff Univ, Sch Phys & Astron, Cardiff CF24 3AA, S Glam, Wales 7.Royal Observ, UK Astron Technol Ctr, Edinburgh EH9 3HJ, Midlothian, Scotland 8.Univ St Andrews, SUPA, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland 9.Liverpool John Moores Univ, Astrophys Res Inst, Liverpool L3 5RF, Merseyside, England 10.Univ Sydney, Sydney Inst Astron, Sydney, NSW 2006, Australia |
| 推荐引用方式 GB/T 7714 | Guo, Qi,Lacey, Cedric,Norberg, Peder,et al. Herschel-ATLAS/GAMA: How does the far-IR luminosity function depend on galaxy group properties?[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2014,442(3):2253-2270. |
| APA | Guo, Qi.,Lacey, Cedric.,Norberg, Peder.,Cole, Shaun.,Baugh, Carlton.,...&Robotham, A..(2014).Herschel-ATLAS/GAMA: How does the far-IR luminosity function depend on galaxy group properties?.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,442(3),2253-2270. |
| MLA | Guo, Qi,et al."Herschel-ATLAS/GAMA: How does the far-IR luminosity function depend on galaxy group properties?".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 442.3(2014):2253-2270. |
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来源：国家天文台
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