Compressed Magnetic Field in the Magnetically Regulated Global Collapsing Clump of G9.62+0.19

doi:10.3847/2041-8213/aaf19e

	Compressed Magnetic Field in the Magnetically Regulated Global Collapsing Clump of G9.62+0.19
	Liu, Tie 1,2; Kim, Kee-Tae 1; Liu, Sheng-Yuan 3; Juvela, Mika 4; Zhang, Qizhou 5; Wu, Yuefang 6; Li, Pak Shing 7; Parsons, Harriet 2; Soam, Archana 1,8; Goldsmith, Paul F.9
刊名	ASTROPHYSICAL JOURNAL LETTERS
	2018-12-10
卷号	869 期号:1 页码:6
关键词	ISM: magnetic fields
ISSN号	2041-8205
DOI	10.3847/2041-8213/aaf19e
通讯作者	Liu, Tie(liutiepku@gmail.com)
英文摘要	How stellar feedback from high-mass stars (e.g., H II regions) influences the surrounding interstellar medium and regulates new star formation is still unclear. To address this question, we observed the G9.62+0.19 complex in 850 mu m continuum with the James Clerk Maxwell Telescope/POL-2 polarimeter. An ordered magnetic field has been discovered in its youngest clump, the G9.62 clump. The magnetic field strength is determined to be similar to 1 mG. Magnetic field plays a larger role than turbulence in supporting the clump. However, the G9.62 clump is still unstable against gravitational collapse even if thermal, turbulent, and magnetic field support are taken into account together. The magnetic field segments in the outskirts of the G9.62 clump seem to point toward the clump center, resembling a dragged-in morphology, indicating that the clump is likely undergoing magnetically regulated global collapse. However, the magnetic field in its central region is aligned with the shells of the photodissociation regions and is approximately parallel to the ionization (or shock) front, indicating that the magnetic field therein is likely compressed by the expanding H II regions that formed in the same complex.
WOS关键词	MASSIVE-STAR-FORMATION ; H-II REGIONS ; GEOMETRY ; SCUBA-2 ; BORDERS ; HOT
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000452385800005
内容类型	期刊论文
源URL	[http://libir.pmo.ac.cn/handle/332002/20542]
专题	中国科学院紫金山天文台
通讯作者	Liu, Tie
作者单位	1.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea 2.East Asian Observ, 660 North Aohoku Pl, Hilo, HI 96720 USA 3.Acad Sinica, Inst Astron & Astrophys, POB 23-141, Taipei 106, Taiwan 4.Univ Helsinki, Dept Phys, POB 64, FI-00014 Helsinki, Finland 5.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA 6.Peking Univ, Dept Astron, Beijing 100871, Peoples R China 7.Univ Calif Berkeley, Astron Dept, Berkeley, CA 94720 USA 8.NASA, Ames Res Ctr, USRA, SOFIA Sci Ctr, N232, Moffett Field, CA 94035 USA 9.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA 10.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
推荐引用方式 GB/T 7714	Liu, Tie,Kim, Kee-Tae,Liu, Sheng-Yuan,et al. Compressed Magnetic Field in the Magnetically Regulated Global Collapsing Clump of G9.62+0.19[J]. ASTROPHYSICAL JOURNAL LETTERS,2018,869(1):6.
APA	Liu, Tie.,Kim, Kee-Tae.,Liu, Sheng-Yuan.,Juvela, Mika.,Zhang, Qizhou.,...&Wang, Ke.(2018).Compressed Magnetic Field in the Magnetically Regulated Global Collapsing Clump of G9.62+0.19.ASTROPHYSICAL JOURNAL LETTERS,869(1),6.
MLA	Liu, Tie,et al."Compressed Magnetic Field in the Magnetically Regulated Global Collapsing Clump of G9.62+0.19".ASTROPHYSICAL JOURNAL LETTERS 869.1(2018):6.