Carbon monoxide in an extremely metal-poor galaxy

doi:10.1038/ncomms13789

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	Carbon monoxide in an extremely metal-poor galaxy
	Shi, Yong 2,3,4; Wang, Junzhi 5,6; Zhang, Zhi-Yu 8; Gao, Yu 1,6; Hao, Cai-Na 9; Xia, Xiao-Yang 7,9; Gu, Qiusheng 2,3,4
刊名	NATURE COMMUNICATIONS
	2016-12-09
卷号	7
ISSN号	2041-1723
DOI	10.1038/ncomms13789
英文摘要	Extremely 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.
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000389538100001
内容类型	期刊论文
源URL	[http://119.78.226.72/handle/331011/32679]
专题	中国科学院上海天文台
通讯作者	Shi, Yong
作者单位	1.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China 2.Nanjing Univ, Sch Astron & Space Sci, Nanjing 210093, Jiangsu, Peoples R China 3.Nanjing Univ, Key Lab Modern Astron & Astrophys, Minist Educ, Nanjing 210093, Jiangsu, Peoples R China 4.Collaborat Innovat Ctr Modern Astron & Space Expl, Nanjing 210093, Jiangsu, Peoples R China 5.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China 6.Chinese Acad Sci, Key Lab Radio Astron, Nanjing 210008, Jiangsu, Peoples R China 7.Royal Observ, Univ Edinburgh, Astron Inst, Blackford Hill, Edinburgh EH9 3HJ, Midlothian, Scotland 8.ESO, Karl Schwarzschild Str 2, D-85748 Garching, Germany 9.Tianjin Normal Univ, Tianjin Astrophys Ctr, Tianjin 300387, Peoples R China
推荐引用方式 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.
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.
MLA	Shi, Yong,et al."Carbon monoxide in an extremely metal-poor galaxy".NATURE COMMUNICATIONS 7(2016).