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Neutral Carbon Emission in Luminous Infrared Galaxies: The [CI] Lines as Total Molecular Gas Tracers
Jiao, Qian1,2,3; Zhao, Yinghe4,5,6,7; Zhu, Ming1,2; Lu, Nanyao1,8; Gao, Yu7,9; Zhang, Zhi-Yu10,11
2017-05-10
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume840Issue:2Pages:7
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.

Keywordgalaxies: starburst ISM: atoms ISM: molecules submillimeter: galaxies
DOI10.3847/2041-8213/aa6f0f
WOS KeywordHIGH-REDSHIFT GALAXIES ; ATOMIC CARBON ; PHYSICAL CONDITIONS ; CO ; DUST ; ASTRONOMY ; SAMPLE ; MODEL
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000404545200002
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/22962
Collection中国科学院紫金山天文台
Corresponding AuthorZhao, Yinghe
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, Beijing 100012, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100012, Peoples R China
4.Chinese Acad Sci, Yunnan Observ, Kunming 650011, Peoples R China
5.Chinese Acad Sci, Key Lab Struct & Evolut Celestial Objects, Kunming 650011, Peoples R China
6.Chinese Acad Sci, Ctr Astron Mega Sci, 20A Datun Rd, Beijing 100012, Peoples R China
7.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
8.CCJCA, Camino Observ 1515, Santiago, Chile
9.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Peoples R China
10.Univ Edinburgh, Royal Observ, Inst Astron, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland
11.ESO, Karl Schwarzschild Str 2, D-85748 Munich, Germany
Recommended Citation
GB/T 7714
Jiao, Qian,Zhao, Yinghe,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):7.
APA Jiao, Qian,Zhao, Yinghe,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),7.
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):7.
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