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The JCMT BISTRO Survey: The Distribution of Magnetic Field Strengths toward the OMC-1 Region
Hwang, Jihye1,2; Kim, Jongsoo1,2; Pattle, Kate3; Kwon, Woojin1,4; Sadavoy, Sarah5; Koch, Patrick M.6; Hull, Charles L. H.7,8; Johnstone, Doug9,10; Furuya, Ray S.11; Won Lee, Chang1,2; Arzoumanian, Doris1,12; Tahani, Mehrnoosh13; Eswaraiah, Chakali14,15; Liu, Tie16; Kirchschlager, Florian17; Kim, Kee-Tae1,2; Tamura, Motohide18,19,20; Kwon, Jungmi18; Lyo, A-Ran1; Soam, Archana21; Kang, Ji-hyun1; Bourke, Tyler L.22,23; Matsumura, Masafumi24,25; Mairs, Steve26; Kim, Gwanjeong27; Park, Geumsook1; Nakamura, Fumitaka28,29; Onaka, Takashi18,30; Tang, Xindi31; Liu, Hong-Li32,33; Ward-Thompson, Derek34; Li, Di35,36; Hoang, Thiem1,2; Hasegawa, Tetsuo37; Qiu, Keping38,39; Lai, Shih-Ping6,40,41; Bastien, Pierre42,43
2021-06-01
Source PublicationASTROPHYSICAL JOURNAL
ISSN0004-637X
Volume913Issue:2Pages:85
Contribution Rank29
AbstractMeasurement of magnetic field strengths in a molecular cloud is essential for determining the criticality of magnetic support against gravitational collapse. In this paper, as part of the JCMT BISTRO survey, we suggest a new application of the Davis-Chandrasekhar-Fermi (DCF) method to estimate the distribution of magnetic field strengths in the OMC-1 region. We use observations of dust polarization emission at 450 and 850 mu m, and (CO)-O-18 (3-2) spectral line data obtained with the JCMT. We estimate the volume density, the velocity dispersion, and the polarization angle dispersion in a box, 40 '' x 40 '' (5x5 pixels), which moves over the OMC-1 region. By substituting three quantities in each box with the DCF method, we get magnetic field strengths over the OMC-1 region. We note that there are very large uncertainties in the inferred field strengths, as discussed in detail in this paper. The field strengths vary from 0.8 to 26.4 mG, and their mean value is about 6 mG. Additionally, we obtain maps of the mass-to-flux ratio in units of a critical value and the Alfven Mach number. The central parts of the BN-KL and South (S) clumps in the OMC-1 region are magnetically supercritical, so the magnetic field cannot support the clumps against gravitational collapse. However, the outer parts of the region are magnetically subcritical. The mean Alfven Mach number is about 0.4 over the region, which implies that the magnetic pressure exceeds the turbulent pressure in the OMC-1 region.
DOI10.3847/1538-4357/abf3c4
Indexed BySCI
Language英语
WOS KeywordGOULD BELT SURVEY ; REGULATED STAR-FORMATION ; MOLECULAR CLOUDS ; SCUBA-2 OBSERVATIONS ; ZEEMAN OBSERVATIONS ; LEGACY SURVEY ; ORION-A ; POLARIZATION ; EVOLUTION ; COLLAPSE
Funding ProjectNew Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the National Research Foundation of Korea[NRF-2016R1C1B2013642] ; NAOJ Fellowship ; JSPS KAKENHI[18K13586] ; JSPS KAKENHI[20K14527] ; JSPS KAKENHI[19H01938] ; JSPS KAKENHI[18H05442] ; JSPS KAKENHI[15H02063] ; JSPS KAKENHI[22000005] ; JSPS KAKENHI[19K14775] ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology[NRF-2019R1A2C1010851] ; Chinese academy of sciences[114231KYSB20200009] ; NSF[AST-1715876] ; Ministry of Science and Technology of Taiwan[106-2119-M-007-021-MY3] ; Ministry of Science and Technology of Taiwan[109-2112-M-007-010-MY3] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education[NRF-2020R1A6A3A01100208] ; National Natural Science Foundation of China (NSFC)[U1731237] ; National Natural Science Foundation of China (NSFC)[11911530226] ; National Natural Science Foundation of China (NSFC)[11725313] ; National Key R&D Program of China[2017YFA0402700] ; Science and Technology Facilities Council of the United Kingdom
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000655553900001
PublisherIOP PUBLISHING LTD
Funding OrganizationNew Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the National Research Foundation of Korea ; NAOJ Fellowship ; JSPS KAKENHI ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology ; Chinese academy of sciences ; NSF ; Ministry of Science and Technology of Taiwan ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education ; National Natural Science Foundation of China (NSFC) ; National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xao.ac.cn/handle/45760611-7/4204
Collection射电天文研究室_恒星形成与演化研究团组
Corresponding AuthorHwang, Jihye
Affiliation1.Korea Astron & Space Sci Inst KASI, 776 Daedeokdae Ro, Daejeon 34055, South Korea
2.Univ Sci & Technol, Korea UST, 217 Gajeong Ro, Daejeon 34113, South Korea
3.Natl Univ Ireland Galway, Ctr Astron, Dept Phys, Univ Rd, Galway H91 TK33, Ireland
4.Seoul Natl Univ, SNU Astron Res Ctr, 1 Gwanak Ro, Seoul 08826, South Korea
5.Queens Univ, Dept Phys Engn Phys & Astrophys, Kingston, ON K7L 3N6, Canada
6.Acad Sinica, Inst Astron & Astrophys, 1,Sec 4,Roosevelt Rd, Taipei 10617, Taiwan
7.Natl Astron Observ Japan, Alonso Cordova 3788,Off 61B, Santiago 7630422, Chile
8.Joint ALMA Observ, Alonso Cordova 3107, Santiago, Chile
9.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada
10.Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 2Y2, Canada
11.Tokushima Univ, Inst Liberal Arts & Sci, Minami Jousanajima Machi 1-1, Tokushima 7708502, Japan
12.Aix Marseille Univ, CNRS, CNES, LAM, Marseille, France
13.Natl Res Council Canada, Herzberg Astron & Astrophys Res Ctr, Domin Radio Astrophys Observ, POB 248, Penticton, BC V2A 6J9, Canada
14.Chinese Acad Sci, CAS Key Lab FAST, Natl Astron Observ, Beijing 100049, Peoples R China
15.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
16.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China
17.UCL, Dept Phys & Astron, London WC1E 6BT, England
18.Univ Tokyo, Grad Sch Sci, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan
19.Astrobiol Ctr, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
20.Natl Astron Observ, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan
21.Univ Space Res Assoc, NASA, Ames Res Ctr, SOFIA Sci Ctr, Moffett Field, CA 94035 USA
22.SKA Org, Jodrell Bank, Macclesfield SK11 9FT, Cheshire, England
23.Univ Manchester, Sch Phys & Astron, Jodrell Bank, Ctr Astrophys, Oxford Rd, Manchester M13 9PL, Lancs, England
24.Kagawa Univ, Fac Educ, Saiwai Cho 1-1, Takamatsu, Kagawa 7608522, Japan
25.Kagawa Univ, Ctr Educ Dev & Support, Saiwai Cho 1-1, Takamatsu, Kagawa 7608522, Japan
26.East Asian Observ, 660 N Aohoku Pl,Univ Pk, Hilo, HI 96720 USA
27.Natl Inst Nat Sci, Natl Astron Observ Japan, Nobeyama Radio Observ, Minamisa Ku, Minamimaki, Nagano 3841305, Japan
28.Natl Astron Observ Japan, Div Theoret Astron, Mitaka, Tokyo 1818588, Japan
29.SOKENDAI Grad Univ Adv Studies, Hayama, Kanagawa 2400193, Japan
30.Meisei Univ, Dept Phys, Fac Sci & Engn, 2-1-1 Hodokubo, Hino, Tokyo 1918506, Japan
31.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
32.Chinese Acad Sci, South Amer Ctr Astrophys, Camino El Observ 1515, Santiago, Chile
33.Chinese Acad Sci, Shanghai Astron Observ, 80 Nandan Rd, Shanghai 200030, Peoples R China
34.Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England
35.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China
36.Univ KwaZulu Natal, NAOC UKZN Computat Astrophys Ctr, ZA-4000 Durban, South Africa
37.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
38.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China
39.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China
40.Natl Tsing Hua Univ, Inst Astron, 101,Sec 2,Guangfu Rd, Hsinchu 30013, Taiwan
41.Natl Tsing Hua Univ, Dept Phys, 101,Sec 2,Guangfu Rd, Hsinchu 30013, Taiwan
42.Univ Montreal, Ctr Rech Astrophys Quebec, 1375 Ave Therese Lavoie Roux, Montreal, PQ H2V 0B3, Canada
43.Univ Montreal, Dept Phys, 1375 Ave Therese Lavoie Roux, Montreal, PQ H2V 0B3, Canada
Recommended Citation
GB/T 7714
Hwang, Jihye,Kim, Jongsoo,Pattle, Kate,et al. The JCMT BISTRO Survey: The Distribution of Magnetic Field Strengths toward the OMC-1 Region[J]. ASTROPHYSICAL JOURNAL,2021,913(2):85.
APA Hwang, Jihye.,Kim, Jongsoo.,Pattle, Kate.,Kwon, Woojin.,Sadavoy, Sarah.,...&Bastien, Pierre.(2021).The JCMT BISTRO Survey: The Distribution of Magnetic Field Strengths toward the OMC-1 Region.ASTROPHYSICAL JOURNAL,913(2),85.
MLA Hwang, Jihye,et al."The JCMT BISTRO Survey: The Distribution of Magnetic Field Strengths toward the OMC-1 Region".ASTROPHYSICAL JOURNAL 913.2(2021):85.
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