Molecular Gas and Star-formation in Low Surface Brightness Galaxies

doi:10.3847/1538-3881/aa845a

	Molecular Gas and Star-formation in Low Surface Brightness Galaxies
	Cao, Chen 2; Wu, Hong1,4 ; Cao, Tian-Wen1,4,5 ; Du, Wei 1; Lei, Feng-Jie 1,4; Zhu, Ming 1; Wouterloot, Jan 3; Parsons, Harriet 3; Zhu, Yi-Nan1 ; Wu, Chao-Jian1
刊名	ASTRONOMICAL JOURNAL
	2017-09-01
卷号	154 期号:3
关键词	Galaxies: Evolution Galaxies: Star Formation Ism: Molecules
DOI	10.3847/1538-3881/aa845a
文献子类	Article
英文摘要	We have obtained CO(J = 2-1) spectra of nine face-on low surface brightness galaxies using the JCMT 15 m telescope and observed Ha images using the 2.16 m telescope of NAOC. As no CO has been detected, only upper limits on the H-2 masses are given. The upper limits of total molecular hydrogen masses are about (1.2-82.4) x 10(7) M-circle dot. Their star-formation rates are mainly lower than 0.4 M-circle dot yr(-1) and star-formation efficiencies are lower than 1.364 x 10(-10) yr(-1). Our results show that the absence of molecular gas content is the direct reason for the low star-formation rate. The low star -formation efficiency probably resulted from the low efficiency of H I gas transforming to H-2 gas.
WOS关键词	DISK GALAXIES ; INTERSTELLAR-MEDIUM ; SPIRAL GALAXIES ; FORMATION EFFICIENCY ; IRREGULAR GALAXIES ; OXYGEN ABUNDANCES ; CONVERSION FACTOR ; NEARBY GALAXIES ; HI OBSERVATIONS ; FORMATION LAW
WOS研究方向	Astronomy & Astrophysics
语种	英语
WOS记录号	WOS:000410575200001
资助机构	National Natural Science Foundation of China(11403037 ; National Natural Science Foundation of China(11403037 ; Strategic Priority Research Program, "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program, "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821803 ; China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821803 ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Science and Technology Facilities Council of the United Kingdom ; Science and Technology Facilities Council of the United Kingdom ; (M15BI057) ; (M15BI057) ; 11733006 ; 11733006 ; 2014CB845705) ; 2014CB845705) ; 11173030 ; 11173030 ; 11225316 ; 11225316 ; 11503013 ; 11503013 ; 11403061 ; 11403061 ; U1531245 ; U1531245 ; 11303038) ; 11303038) ; National Natural Science Foundation of China(11403037 ; National Natural Science Foundation of China(11403037 ; Strategic Priority Research Program, "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; Strategic Priority Research Program, "The Emergence of Cosmological Structures" of the Chinese Academy of Sciences(XDB09000000) ; China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821803 ; China Ministry of Science and Technology under the State Key Development Program for Basic Research(2012CB821803 ; Chinese Academy of Sciences (CAS) ; Chinese Academy of Sciences (CAS) ; Science and Technology Facilities Council of the United Kingdom ; Science and Technology Facilities Council of the United Kingdom ; (M15BI057) ; (M15BI057) ; 11733006 ; 11733006 ; 2014CB845705) ; 2014CB845705) ; 11173030 ; 11173030 ; 11225316 ; 11225316 ; 11503013 ; 11503013 ; 11403061 ; 11403061 ; U1531245 ; U1531245 ; 11303038) ; 11303038)
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/20135]
专题	国家天文台_光学天文研究部
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Key Lab Opt Astron, Beijing 100012, Peoples R China 2.Shandong Univ Weihai, Sch Space Sci & Phys, Weihai 264209, Shandong, Peoples R China 3.East Asian Observ, 660 N Aohoku Pl, Hilo, HI 96720 USA 4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing, Peoples R China 5.China Chile Joint Ctr Astron, Chinese Acad Sci South Amer Ctr Astron, Camino Observ 1515, Santiago, Chile
推荐引用方式 GB/T 7714	Cao, Chen,Wu, Hong,Cao, Tian-Wen,et al. Molecular Gas and Star-formation in Low Surface Brightness Galaxies[J]. ASTRONOMICAL JOURNAL,2017,154(3).
APA	Cao, Chen.,Wu, Hong.,Cao, Tian-Wen.,Du, Wei.,Lei, Feng-Jie.,...&Wicker, James E..(2017).Molecular Gas and Star-formation in Low Surface Brightness Galaxies.ASTRONOMICAL JOURNAL,154(3).
MLA	Cao, Chen,et al."Molecular Gas and Star-formation in Low Surface Brightness Galaxies".ASTRONOMICAL JOURNAL 154.3(2017).