Gas compression and likely triggered star formation in the infrared bubble N107

doi:10.1088/1674-4527/18/10/122

CORC > 国家天文台 > 中国科学院国家天文台

	Gas compression and likely triggered star formation in the infrared bubble N107
	Li, Hao 1,2; Li, Jin-Zeng 1; Yuan, Jing-Hua 1; Huang, Ya-Fang 1,2; Ren, Zhi-Yuan 1
刊名	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2018-10-01
卷号	18 期号:10 页码:16
关键词	ISM: HII regions ISM: clouds stars: formation ISM: structure methods: observational
ISSN号	1674-4527
DOI	10.1088/1674-4527/18/10/122
英文摘要	The expansion of HII regions can regulate the evolution of their natal clouds and the star formation therein. Infrared dust bubbles, which are frequently associated with HII regions, are ideal laboratories to test whether impulse(s) driven by the expanding bubbles enhances or suppresses star-formation. In this work, we present a comprehensive study of a 20-pc scale infrared bubble N107 to reveal the compression of the neutral gas and associated star-forming activities. We obtain coltunn density (N-H(2)) and dust temperature (T-dust) maps via fitting modified blackbodies to multi-band far-infrared Herschel data. The shell structure can be recognized on the column density map. The molecular gas along the rim of N107 fragments into 94 dense clumps at an angular resolution of 18 ''. Besides, based on the GLIMPSE point source catalog, we have identified 228 young stellar objects (YSOs) which are categorized into 55 Class I objects, 127 Class II objects and 46 transition disks (TDs). The 94 clumps and 55 Class I type YSOs are mainly distributed along the shell, which may suggest triggered star formation exists in N107. In addition, analysis of N-H(2) probability density functions (PDFs) helps us reveal the condition of natal clouds. The two lognormal profiles of PDFs suggest that the surrounding molecular gas has been compressed due to expansion of the bubble. This compression may trigger the star formation process. Moreover, we find the shape of the PDFs changed after removing the background. Taken together, this big bubble seems to compress the surrounding gas and strongly regulate star formation therein.
资助项目	National Natural Science Foundation of China[11503035] ; National Natural Science Foundation of China[11573036] ; National Natural Science Foundation of China[11403040] ; National Natural Science Foundation of China[11403041] ; International S&T Cooperation Program of China[2010DFA02710] ; NASA[1407]
WOS关键词	RADIATION-DRIVEN IMPLOSION ; GALACTIC PLANE SURVEY ; SUPERSONIC TURBULENCE ; FORMATION RATES ; MASS FUNCTION ; DARK CLOUDS ; HII-REGIONS ; BORDERS ; CLUSTERS ; DENSITY
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
WOS记录号	WOS:000446091900005
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; International S&T Cooperation Program of China ; International S&T Cooperation Program of China ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International S&T Cooperation Program of China ; International S&T Cooperation Program of China ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International S&T Cooperation Program of China ; International S&T Cooperation Program of China ; NASA ; NASA ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; International S&T Cooperation Program of China ; International S&T Cooperation Program of China ; NASA ; NASA
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/22905]
专题	中国科学院国家天文台
通讯作者	Li, Hao
作者单位	1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Li, Hao,Li, Jin-Zeng,Yuan, Jing-Hua,et al. Gas compression and likely triggered star formation in the infrared bubble N107[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2018,18(10):16.
APA	Li, Hao,Li, Jin-Zeng,Yuan, Jing-Hua,Huang, Ya-Fang,&Ren, Zhi-Yuan.(2018).Gas compression and likely triggered star formation in the infrared bubble N107.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,18(10),16.
MLA	Li, Hao,et al."Gas compression and likely triggered star formation in the infrared bubble N107".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 18.10(2018):16.