PMO OpenIR  > 星系中的恒星形成研究团组
OBSERVATIONAL CONSTRAINTS ON THE CO-EVOLUTION OF SUPERMASSIVE BLACK HOLES AND GALAXIES
Zheng, X. Z.1; Bell, E. F.2,3; Somerville, R. S.2,4; Rix, H. -W.2; Jahnke, K.2; Fontanot, F.2,5; Rieke, G. H.6; Schiminovich, D.7; Meisenheimer, K.2
2009-12-20
Source PublicationASTROPHYSICAL JOURNAL
Volume707Issue:2Pages:1566-1577
AbstractThe star formation rate (SFR) and black hole accretion rate (BHAR) functions are measured to be proportional to each other at z less than or similar to 3. This close correspondence between SF and BHA would naturally yield a BH mass-galaxy mass correlation, whereas a BH mass-bulge mass correlation is observed. To explore this apparent contradiction, we study the SF in spheroid-dominated galaxies between z = 1 and the present day. We use 903 galaxies from the COMBO-17 survey with M(*) > 2 x 10(10) M(circle dot), ultraviolet and infrared-derived SFRs from Spitzer and Galaxy Evolution Explorer, and morphologies from GEMS Hubble Space Telescope/Advanced Camera for Surveys imaging. Using stacking techniques, we find that 25% of all SF occurs in spheroid-dominated galaxies (Sersic index n > 2.5), while the BHAR that we would expect if the global scalings held is 3 times higher. This rules out the simplest picture of co-evolution, in which SF and BHA trace each other at all times. These results could be explained if SF and BHA occur in the same events, but offset in time, for example at different stages of a merger event. However, one would then expect to see the corresponding star formation activity in early-stage mergers, in conflict with observations. We conclude that the major episodes of SF and BHA occur in different events, with the bulk of SF happening in isolated disks and most BHA occurring in major mergers. The apparent global co-evolution results from the regulation of the BH growth by the potential well of the galactic spheroid, which includes a major contribution from disrupted disk stars.
KeywordGalaxies: Active Galaxies: Evolution Quasars: General
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/707/2/1566
WOS KeywordACTIVE GALACTIC NUCLEI ; STAR-FORMATION HISTORY ; DEEP-FIELD-SOUTH ; BH-SIGMA RELATION ; ULTRAVIOLET LUMINOSITY DENSITY ; SPECTRAL ENERGY-DISTRIBUTIONS ; STELLAR MASS DENSITY ; DIGITAL-SKY-SURVEY ; RAY SELECTED AGN ; SIMILAR-TO 1
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000272465400058
Citation statistics
Cited Times:36[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/15933
Collection星系中的恒星形成研究团组
Affiliation1.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
2.Max Planck Inst Astron, D-69117 Heidelberg, Germany
3.Univ Michigan, Ann Arbor, MI 48109 USA
4.Space Telescope Sci Inst, Baltimore, MD 21218 USA
5.Osserv Astron Trieste, INAF, I-34131 Trieste, Italy
6.Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
7.Columbia Univ, Dept Astron, New York, NY 10027 USA
Recommended Citation
GB/T 7714
Zheng, X. Z.,Bell, E. F.,Somerville, R. S.,et al. OBSERVATIONAL CONSTRAINTS ON THE CO-EVOLUTION OF SUPERMASSIVE BLACK HOLES AND GALAXIES[J]. ASTROPHYSICAL JOURNAL,2009,707(2):1566-1577.
APA Zheng, X. Z..,Bell, E. F..,Somerville, R. S..,Rix, H. -W..,Jahnke, K..,...&Meisenheimer, K..(2009).OBSERVATIONAL CONSTRAINTS ON THE CO-EVOLUTION OF SUPERMASSIVE BLACK HOLES AND GALAXIES.ASTROPHYSICAL JOURNAL,707(2),1566-1577.
MLA Zheng, X. Z.,et al."OBSERVATIONAL CONSTRAINTS ON THE CO-EVOLUTION OF SUPERMASSIVE BLACK HOLES AND GALAXIES".ASTROPHYSICAL JOURNAL 707.2(2009):1566-1577.
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