中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
MOLECULAR GAS IN INFRARED ULTRALUMINOUS QSO HOSTS

文献类型:期刊论文

作者Xia, X. Y.1; Gao, Y.2,3; Hao, C. -N.1; Tan, Q. H.2,3,4; Mao, S.5,6; Omont, A.7,8; Flaquer, B. O.9; Leon, S.9,10; Cox, P.11
刊名ASTROPHYSICAL JOURNAL
出版日期2012-05-10
卷号750期号:2页码:92(13pp)
ISSN号0004-637X
关键词galaxies: active galaxies: evolution galaxies: high-redshift galaxies: starburst radio lines: galaxies
英文摘要We report CO detections in 17 out of 19 infrared ultraluminous QSO (IR QSO) hosts observed with the IRAM 30 m telescope. The cold molecular gas reservoir in these objects is in a range of (0.2-2.1) x 10(10) M-circle dot (adopting a CO-to-H-2 conversion factor alpha CO = 0.8 M-circle dot (K km s(-1) pc(2))(-1)). We find that the molecular gas properties of IR QSOs, such as the molecular gas mass, star formation efficiency (L-FIR/L'(CO)), and CO (1-0) line widths, are indistinguishable from those of local ultraluminous infrared galaxies (ULIRGs). A comparison of low-and high-redshift CO-detected QSOs reveals a tight correlation between L-FIR and L'(CO(1-0)) for all QSOs. This suggests that, similar to ULIRGs, the far-infrared emissions of all QSOs are mainly from dust heated by star formation rather than by active galactic nuclei (AGNs), confirming similar findings from mid-infrared spectroscopic observations by Spitzer. A correlation between the AGN-associated bolometric luminosities and the CO line luminosities suggests that star formation and AGNs draw from the same reservoir of gas and there is a link between star formation on similar to kpc scale and the central black hole accretion process on much smaller scales.
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]SUPERMASSIVE BLACK-HOLES ; ACTIVE GALACTIC NUCLEI ; QUASI-STELLAR OBJECTS ; HIGH-REDSHIFT QUASARS ; PALOMAR-GREEN QSOS ; SIMILAR-TO 2 ; STAR-FORMATION ; SUBMILLIMETER GALAXIES ; SPECTROSCOPIC PROPERTIES ; EVOLUTIONARY LINK
收录类别SCI
语种英语
WOS记录号WOS:000303446500006
公开日期2013-01-31
源URL[http://libir.pmo.ac.cn/handle/332002/8070]  
专题紫金山天文台_星系中的恒星形成研究团组
作者单位1.Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China
2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
3.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
4.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
5.Natl Astron Observ China, Beijing 100012, Peoples R China
6.Univ Manchester, Jodrell Bank, Ctr Astrophys, Manchester M13 9PL, Lancs, England
7.CNRS, F-75014 Paris, France
8.UPMC, Inst Astrophys Paris, UMR7095, F-75014 Paris, France
9.Inst Radioastron Milimetr IRAM, Granada 18012, Spain
10.Joint Alma Observ ESO, Santiago, Chile
推荐引用方式
GB/T 7714
Xia, X. Y.,Gao, Y.,Hao, C. -N.,et al. MOLECULAR GAS IN INFRARED ULTRALUMINOUS QSO HOSTS[J]. ASTROPHYSICAL JOURNAL,2012,750(2):92(13pp).
APA Xia, X. Y..,Gao, Y..,Hao, C. -N..,Tan, Q. H..,Mao, S..,...&Cox, P..(2012).MOLECULAR GAS IN INFRARED ULTRALUMINOUS QSO HOSTS.ASTROPHYSICAL JOURNAL,750(2),92(13pp).
MLA Xia, X. Y.,et al."MOLECULAR GAS IN INFRARED ULTRALUMINOUS QSO HOSTS".ASTROPHYSICAL JOURNAL 750.2(2012):92(13pp).

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来源:紫金山天文台

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