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Effects of galaxy mergers on the faint IRAS source counts and the background
Wang, YP; Biermann, PL
2000-04-01
Source PublicationASTRONOMY & ASTROPHYSICS
ISSN0004-6361
Volume356Issue:3Pages:808-814
AbstractBinary 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).
KeywordGalaxies : Starburst Galaxies : Seyfert Galaxies : Spiral Galaxies : Evolution Galaxies : Interactions Galaxies : Luminosity Function, Mass Function
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
WOS KeywordACTIVE GALACTIC NUCLEI ; STAR-FORMATION HISTORY ; HIGH-REDSHIFT GALAXIES ; LUMINOSITY FUNCTION ; INFRARED GALAXIES ; ENERGY-SPECTRUM ; NUMBER COUNTS ; EVOLUTION ; FIELD ; CONSTRAINTS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000087446700010
Citation statistics
Cited Times:12[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8295
Collection期刊(老文献)
Affiliation1.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
Recommended Citation
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.
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