PMO OpenIR  > 星系中的恒星形成研究团组
MOLECULAR GAS IN INFRARED ULTRALUMINOUS QSO HOSTS
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
2012-05-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume750Issue:2Pages:92(13pp)
AbstractWe 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.
KeywordGalaxies: Active Galaxies: Evolution Galaxies: High-redshift Galaxies: Starburst Radio Lines: Galaxies
Subject AreaAstronomy & Astrophysics
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1088/0004-637X/750/2/92
WOS KeywordSUPERMASSIVE 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
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000303446500006
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/8070
Collection星系中的恒星形成研究团组
Affiliation1.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
11.Inst Radio Astron Millimetr IRAM, F-38406 St Martin Dheres, France
Recommended Citation
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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