Effects of galaxy mergers on the faint IRAS source counts and the background

	Effects of galaxy mergers on the faint IRAS source counts and the background
	Wang, YP ; Biermann, PL
刊名	ASTRONOMY & ASTROPHYSICS
	2000-04-01
卷号	356 期号:3 页码:808-814
关键词	galaxies : starburst galaxies : Seyfert galaxies : spiral galaxies : evolution galaxies : interactions galaxies : luminosity function, mass function
ISSN号	0004-6361
英文摘要	Binary merging constitutes a complementary mode of galaxy evolution to the canonical hierarchical clustering theory. This merger-driven evolution not only influences the galaxy mass distribution function, but may drive the main galactic activity cycles, such as starbursts and the activity in the nuclei (AGNs). In this paper, we use galaxy aggregation dynamics together with a possible merger-driven starburst and AGN phenomena, to study the effects of evolution of these consequential activities for the faint IRAS source counts and the infra-red background. We find that the strong evolution of IRAS 60 mu m source count at flux range of 10 mJy similar to 1 Jy is difficult to be explained only by the merger rate decrease with cosmic time. We need to assume a redshift dependent infrared burst phase of ultraluminous infrared galaxies (ULIGs) from the gas rich mergers at high redshift and the gas poor mergers at low redshift. The background intensity at 60 mu m which we get from this aggregation evolution is a lower Limit of only 1.9 nW m(-2) sr(-1), about half of those estimated by some previous models, but close to the lower end of the range derived by Malkan & Stecker (1998).
学科主题	Astronomy & Astrophysics
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Astronomy & Astrophysics
研究领域[WOS]	Astronomy & Astrophysics
关键词[WOS]	ACTIVE GALACTIC NUCLEI ; STAR-FORMATION HISTORY ; HIGH-REDSHIFT GALAXIES ; LUMINOSITY FUNCTION ; INFRARED GALAXIES ; ENERGY-SPECTRUM ; NUMBER COUNTS ; EVOLUTION ; FIELD ; CONSTRAINTS
收录类别	SCI
语种	英语
WOS记录号	WOS:000087446700010
公开日期	2013-02-01
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/8295]
专题	紫金山天文台_期刊（老文献）
作者单位	1.Acad Sinica, Purple Mt Observ, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100864, Peoples R China 3.Max Planck Inst Radioastron, D-53121 Bonn, Germany 4.Berg Univ Gesamthsch Wuppertal, D-42097 Wuppertal, Germany
推荐引用方式 GB/T 7714	Wang, YP,Biermann, PL. Effects of galaxy mergers on the faint IRAS source counts and the background[J]. ASTRONOMY & ASTROPHYSICS,2000,356(3):808-814.
APA	Wang, YP,&Biermann, PL.(2000).Effects of galaxy mergers on the faint IRAS source counts and the background.ASTRONOMY & ASTROPHYSICS,356(3),808-814.
MLA	Wang, YP,et al."Effects of galaxy mergers on the faint IRAS source counts and the background".ASTRONOMY & ASTROPHYSICS 356.3(2000):808-814.