Resolving the Interstellar Medium in Ultraluminous Infrared QSO Hosts with ALMA
文献类型:期刊论文
作者 | Tan, Qing-Hua15,16; Gao, Yu15,16; Kohno, Kotaro13,14; Xia, Xiao-Yang12; Omont, Alain10,11; Hao, Cai-Na12; Mao, Shu-De7,8,9; Daddi, Emanuele6; Shi, Yong4,5; Zhao, Ying-He3 |
刊名 | ASTROPHYSICAL JOURNAL |
出版日期 | 2019-12-10 |
卷号 | 887期号:1页码:20 |
ISSN号 | 0004-637X |
DOI | 10.3847/1538-4357/ab50be |
通讯作者 | Tan, Qing-Hua(qhtan@pmo.ac.cn) |
英文摘要 | We 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. |
WOS关键词 | SUPERMASSIVE BLACK-HOLES ; ACTIVE GALACTIC NUCLEI ; QUASI-STELLAR OBJECTS ; DENSE MOLECULAR GAS ; STAR-FORMATION ; HIGH-REDSHIFT ; ROTATION CURVES ; SPECTROSCOPIC PROPERTIES ; GALAXIES ; EMISSION |
WOS研究方向 | Astronomy & Astrophysics |
语种 | 英语 |
出版者 | IOP PUBLISHING LTD |
WOS记录号 | WOS:000506001500024 |
源URL | [http://libir.pmo.ac.cn/handle/332002/35382] |
专题 | 中国科学院紫金山天文台 |
通讯作者 | Tan, Qing-Hua |
作者单位 | 1.Univ Paris 06, 98Bis Blvd Arago, F-75014 Paris, France 2.CNRS, Inst Astrophys Paris, 98Bis Blvd Arago, F-75014 Paris, France 3.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Yunnan, Peoples R China 4.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210093, Peoples R China 5.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Peoples R China 6.Univ Paris Diderot, Univ Paris Saclay, Sorbonne Paris Cite, CNRS,CEA,IRFU,DAp,AIM, F-91191 Gif Sur Yvette, France 7.Chinese Acad Sci, Natl Astron Observ, 20A Datun Rd, Beijing 100012, Peoples R China 8.Tsinghua Univ, Tsinghua Ctr Astrophys, Beijing 100084, Peoples R China 9.Tsinghua Univ, Phys Dept, Beijing 100084, Peoples R China 10.Inst Astrophys Paris, UMR 7095, CNRS, 98Bis Blvd Arago, F-75014 Paris, France |
推荐引用方式 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. |
入库方式: OAI收割
来源:紫金山天文台
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