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A Curved Magnetic Field in the Ring-like Shell of Bubble N4
Chen, Zhiwei1,2; Jiang, Zhibo1,2; Tamura, Motohide3,4; Kwon, Jungmi5; Roman-Lopes, A.6
2017-04-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume838Issue:2Pages:5
Abstract

We report the detection of a curved magnetic field in the ring-like shell of the bubble N4, derived from near-infrared polarization of reddened diskless stars located behind this bubble. The magnetic field in the shell is curved and parallel to the ring-like shell, and its strength is estimated to be similar to 120 mu G in the plane of the sky. The magnetic field strength in the shell is significantly enhanced compared to the local field strength. We calculate the mass-to-flux ratio for the submillimeter clumps in the shell and find that they are all magnetically subcritical. Our results demonstrate that the magnetic field strengthens as the interstellar medium is compressed into a shell, and suggest that the magnetic field has the potential to hinder star formation triggered by H II region expansion.

KeywordISM: bubbles ISM: individual objects (N4) ISM: magnetic fields polarization
DOI10.3847/1538-4357/aa65d3
WOS KeywordSTAR-FORMATION ; MOLECULAR CLOUDS ; ATLASGAL SURVEY ; GALACTIC DISK ; DUST ; EXTINCTION ; EVOLUTION ; DENSITY ; REGIONS
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000398118500004
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23142
Collection中国科学院紫金山天文台
Corresponding AuthorChen, Zhiwei
Affiliation1.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
3.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
4.Natl Astron Observ Japan, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
5.Japan Aerosp Explorat Agcy, Inst Space & Astronaut Sci, Chuo Ku, 3-1-1 Yoshinodai, Sagamihara, Kanagawa 2525210, Japan
6.Univ La Serena, Dept Phys & Astron, Av Juan Cisternas, La Serena 1200, Chile
Recommended Citation
GB/T 7714
Chen, Zhiwei,Jiang, Zhibo,Tamura, Motohide,et al. A Curved Magnetic Field in the Ring-like Shell of Bubble N4[J]. ASTROPHYSICAL JOURNAL,2017,838(2):5.
APA Chen, Zhiwei,Jiang, Zhibo,Tamura, Motohide,Kwon, Jungmi,&Roman-Lopes, A..(2017).A Curved Magnetic Field in the Ring-like Shell of Bubble N4.ASTROPHYSICAL JOURNAL,838(2),5.
MLA Chen, Zhiwei,et al."A Curved Magnetic Field in the Ring-like Shell of Bubble N4".ASTROPHYSICAL JOURNAL 838.2(2017):5.
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