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题名: OBSERVATIONAL CONSTRAINTS ON THE CO-EVOLUTION OF SUPERMASSIVE BLACK HOLES AND GALAXIES
作者: 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
刊名: ASTROPHYSICAL JOURNAL
出版日期: 2009-12-20
卷号: 707, 期号:2, 页码:1566-1577
关键词: galaxies: active ; galaxies: evolution ; quasars: general
DOI: 10.1088/0004-637X/707/2/1566
文章类型: Review
英文摘要: The 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.
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 ; DEEP-FIELD-SOUTH ; BH-SIGMA RELATION ; ULTRAVIOLET LUMINOSITY DENSITY ; SPECTRAL ENERGY-DISTRIBUTIONS ; STELLAR MASS DENSITY ; DIGITAL-SKY-SURVEY ; RAY SELECTED AGN ; SIMILAR-TO 1
收录类别: SCI
语种: 英语
WOS记录号: WOS:000272465400058
Citation statistics:
内容类型: 期刊论文
URI标识: http://libir.pmo.ac.cn/handle/332002/15933
Appears in Collections:星系中的恒星形成研究团组_期刊论文

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作者单位: 1.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
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