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Carbon monoxide in an extremely metal-poor galaxy
Shi, Yong1,2,3; Wang, Junzhi4,5; Zhang, Zhi-Yu7; Gao, Yu5,8; Hao, Cai-Na9; Xia, Xiao-Yang6,9; Gu, Qiusheng1,2,3
2016-12-09
Source PublicationNATURE COMMUNICATIONS
ISSN2041-1723
Volume7Pages:5
Corresponding AuthorShi, Yong(yshipku@gmail.com)
AbstractExtremely metal-poor galaxies with metallicity below 10% of the solar value in the local universe are the best analogues to investigating the interstellar medium at a quasi-primitive environment in the early universe. In spite of the ongoing formation of stars in these galaxies, the presence of molecular gas (which is known to provide the material reservoir for star formation in galaxies such as our Milky Way) remains unclear. Here we report the detection of carbon monoxide (CO), the primary tracer of molecular gas, in a galaxy with 7% solar metallicity, with additional detections in two galaxies at higher metallicities. Such detections offer direct evidence for the existence of molecular gas in these galaxies that contain few metals. Using archived infrared data, it is shown that the molecular gas mass per CO luminosity at extremely low metallicity is approximately one-thousand times the Milky Way value.
DOI10.1038/ncomms13789
WOS KeywordCO-TO-H-2 CONVERSION FACTOR ; STAR-FORMING GALAXIES ; LOW-METALLICITY ; IRREGULAR GALAXIES ; DUST ; GAS ; ABUNDANCES ; EMISSION ; H-2 ; CO
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000389538100001
PublisherNATURE PUBLISHING GROUP
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23418
Collection中国科学院紫金山天文台
Corresponding AuthorShi, Yong
Affiliation1.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China
2.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China
3.Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210093, Jiangsu, Peoples R China
4.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
5.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China
6.Royal Observ, Univ Edinburgh, Astron Inst, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland
7.ESO, Karl Schwarzschild Str 2, D-85748 Garching, Germany
8.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
9.Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China
Recommended Citation
GB/T 7714
Shi, Yong,Wang, Junzhi,Zhang, Zhi-Yu,et al. Carbon monoxide in an extremely metal-poor galaxy[J]. NATURE COMMUNICATIONS,2016,7:5.
APA Shi, Yong.,Wang, Junzhi.,Zhang, Zhi-Yu.,Gao, Yu.,Hao, Cai-Na.,...&Gu, Qiusheng.(2016).Carbon monoxide in an extremely metal-poor galaxy.NATURE COMMUNICATIONS,7,5.
MLA Shi, Yong,et al."Carbon monoxide in an extremely metal-poor galaxy".NATURE COMMUNICATIONS 7(2016):5.
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