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Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA
Tan, Qing-Hua1,2; Gao, Yu1,2; Kohno, Kotaro3,4; Xia, Xiao-Yang5; Omont, Alain6,7; Hao, Cai-Na5; Mao, Shu-De8,9,10; Daddi, Emanuele11; Shi, Yong12,13; Zhao, Ying-He14; Cox, Pierre15,16
2019-12-10
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume887Issue:1Pages:20
Corresponding AuthorTan, Qing-Hua(qhtan@pmo.ac.cn)
AbstractWe present ALMA observations of the CO(1-0) line and 3 mm continuum emission in eight ultraluminous infrared (IR) quasi-stellar objects (QSOs) at z = 0.06-0.19. All eight IR QSO hosts are clearly resolved in their CO molecular gas emission with a median source size of 3.2 kpc, and seven out of eight sources are detected in 3 mm continuum, which is found to be more centrally concentrated with respect to molecular gas with sizes of 0.4-1.0 kpc. Our observations reveal a diversity of CO morphology and kinematics for the IR QSO systems, which can be roughly classified into three categories: rotating gas disk with ordered velocity gradient, compact CO peak with disturbed velocity, and multiple CO distinct sources undergoing a merger between a luminous QSO and a companion galaxy separated by a few kpc. The molecular gas in three of the IR QSO hosts is found to be rotation-dominated with a ratio of the maximum rotation velocity to the local velocity dispersion of V-rot/sigma = 4-6. Basic estimates of the dynamical masses within the CO-emitting regions give masses between 7.4 x 10(9) and 6.9 x 10(10) M-circle dot. We find an increasing trend between black hole mass accretion rate and star formation rate (SFR) over 3 orders of magnitude in far-IR luminosity/SFR, in line with the correlation between QSO bolometric luminosity and star formation activity, indicative of a likely direct connection between active galactic nuclei and star formation activity over galaxy evolution timescales.
DOI10.3847/1538-4357/ab50be
WOS KeywordSUPERMASSIVE BLACK-HOLES ; ACTIVE GALACTIC NUCLEI ; QUASI-STELLAR OBJECTS ; DENSE MOLECULAR GAS ; STAR-FORMATION ; HIGH-REDSHIFT ; ROTATION CURVES ; SPECTROSCOPIC PROPERTIES ; GALAXIES ; EMISSION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000506001500024
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35383
Collection中国科学院紫金山天文台
Corresponding AuthorTan, Qing-Hua
Affiliation1.Chinese Acad Sci, Purple Mt Observ, 10 Yuanhua Rd, Nanjing 210033, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 10 Yuanhua Rd, Nanjing 210033, Peoples R China
3.Univ Tokyo, Grad Sch Sci, Inst Astron, Mitaka, Tokyo 1810015, Japan
4.Univ Tokyo, Res Ctr Early Universe, Grad Sch Sci, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
5.Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China
6.UPMC Univ Paris 6, Sorbonne Univ, 98Bis Blvd Arago, F-75014 Paris, France
7.Inst Astrophys Paris, UMR 7095, CNRS, 98Bis Blvd Arago, F-75014 Paris, France
8.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China
9.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China
10.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China
11.Univ Paris Diderot, Univ Paris Saclay, Sorbonne Paris Cite, CNRS,CEA,IRFU,DAp,AIM, F-91191 Gif Sur Yvette, France
12.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Peoples R China
13.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Peoples R China
14.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China
15.CNRS, Inst Astrophys Paris, 98Bis Blvd Arago, F-75014 Paris, France
16.Univ Paris 06, 98Bis Blvd Arago, F-75014 Paris, France
Recommended Citation
GB/T 7714
Tan, Qing-Hua,Gao, Yu,Kohno, Kotaro,et al. Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA[J]. ASTROPHYSICAL JOURNAL,2019,887(1):20.
APA Tan, Qing-Hua.,Gao, Yu.,Kohno, Kotaro.,Xia, Xiao-Yang.,Omont, Alain.,...&Cox, Pierre.(2019).Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA.ASTROPHYSICAL JOURNAL,887(1),20.
MLA Tan, Qing-Hua,et al."Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA".ASTROPHYSICAL JOURNAL 887.1(2019):20.
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