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Neutral Carbon Emission in Luminous Infrared Galaxies: The [CI] Lines as Total Molecular Gas Tracers
Jiao, Qian1,2,3; Zhao YH(赵应和)4,5,6,7; Zhu, Ming1,2; Lu, Nanyao1,8; Gao, Yu7,9; Zhang, Zhi-Yu10,11
Source PublicationASTROPHYSICAL JOURNAL LETTERS
2017-05-10
Volume840Issue:2
DOI10.3847/2041-8213/aa6f0f
Contribution Rank第4完成单位
Indexed BySCI
KeywordGalaxies: Starburst Ism: Atoms Ism: Molecules Submillimeter: Galaxies
Abstract

We present a statistical study of the [C I] (P-3(1) (R) P-3(0)), [C I] (P-3(2) (R) P-3(1)) lines (hereafter [C I] (1-0) and [C I] (2-1), respectively) and the CO(1-0) line for a sample of (ultra-) luminous infrared galaxies ((U) LIRGs). We explore the correlations between the luminosities of CO(1-0) and [C I] lines, and find that L'(CO(1-0)) correlates almost linearly with both L'[C I] (1-0) and L'[C I] (2-1), suggesting that [C I] lines can trace total molecular gas mass, at least for (U) LIRGs. We also investigate the dependence of L'([C I] (1-0))/L'(CO (1-0)), L'([C I] (2-1))/L'(CO (1-0)), and L'([C I] (2-1))/L'([C I] (1-0)) on the far-infrared color of 60-to-100 mu m, and find non-correlation, a weak correlation, and a modest correlation, respectively. Under the assumption that these two carbon transitions are optically thin, we further calculate the [C I] line excitation temperatures, atomic carbon masses, and mean [C I] line flux-to-H-2 mass conversion factors for our sample. The resulting H-2 masses using these [C I]-based conversion factors roughly agree with those derived from L'(CO (1-0)) and CO-to-H-2 conversion factor.

Funding ProjectNatural Science Foundation of China[11673057] ; Natural Science Foundation of China[U1531246] ; Natural Science Foundation of China[11420101002] ; Natural Science Foundation of China[11673028] ; Natural Science Foundation of China[11311130491] ; CAS Key Research Program of Frontier Sciences ; ERC in the form of the Advanced Investigator Programme[321302]
Funding OrganizationNatural Science Foundation of China[11673057, U1531246, 11420101002, 11673028, 11311130491] ; CAS Key Research Program of Frontier Sciences ; ERC in the form of the Advanced Investigator Programme[321302]
Language英语
Subject Area天文学 ; 天体物理学 ; 高能天体物理学 ; 星系与宇宙学
MOST Discipline Catalogue理学 ; 理学::天文学
SubtypeArticle
PublisherIOP PUBLISHING LTD
Publication PlaceTEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
ISSN2041-8205
URL查看原文
WOS IDWOS:000404545200002
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS KeywordHigh-redshift Galaxies ; Atomic Carbon ; Physical Conditions ; Co ; Dust ; Astronomy ; Sample ; Model
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ynao.ac.cn/handle/114a53/10146
Collection丽江天文观测站(南方基地)
中国科学院天体结构与演化重点实验室
Corresponding AuthorZhao YH(赵应和)
Affiliation1.National Astronomical Observatories, Chinese Academy of Sciences (CAS), Beijing 100012, China
2.Key Laboratory of Radio Astronomy, CAS, Beijing 100012, China
3.University of Chinese Academy of Sciences, Beijing 100012, China
4.Yunnan Observatories, CAS, Kunming 650011, China
5.Key Laboratory for the Structure and Evolution of Celestial Objects, CAS, Kunming 650011, China
6.Center for Astronomical Mega-Science, CAS, 20A Datun Road, Chaoyang District, Beijing 100012, China
7.Purple Mountain Observatory, CAS, Nanjing 210008, China
8.China-Chile Joint Center for Astronomy (CCJCA), Camino El Observatorio 1515, Las Condes, Santiago, Chile
9.Key Laboratory of Radio Astronomy, CAS, Nanjing 210008, China
10.Institute for Astronomy, University of Edinburgh, Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, UK
11.ESO, Karl Schwarzschild Str 2, D-85748 Munich, Germany
Corresponding Author AffilicationYunnan Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Jiao, Qian,Zhao YH,Zhu, Ming,et al. Neutral Carbon Emission in Luminous Infrared Galaxies: The [CI] Lines as Total Molecular Gas Tracers[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,840(2).
APA Jiao, Qian,Zhao YH,Zhu, Ming,Lu, Nanyao,Gao, Yu,&Zhang, Zhi-Yu.(2017).Neutral Carbon Emission in Luminous Infrared Galaxies: The [CI] Lines as Total Molecular Gas Tracers.ASTROPHYSICAL JOURNAL LETTERS,840(2).
MLA Jiao, Qian,et al."Neutral Carbon Emission in Luminous Infrared Galaxies: The [CI] Lines as Total Molecular Gas Tracers".ASTROPHYSICAL JOURNAL LETTERS 840.2(2017).
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