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The JCMT BISTRO-2 Survey: The Magnetic Field in the Center of the Rosette Molecular Cloud

文献类型：期刊论文

作者Konyves, Vera35; Ward-Thompson, Derek35; Pattle, Kate34; Di Francesco, James32,33; Arzoumanian, Doris31; Chen, Zhiwei30; Diep, Pham Ngoc29; Eswaraiah, Chakali27,28; Fanciullo, Lapo26; Furuya, Ray S.24,25
刊名ASTROPHYSICAL JOURNAL
出版日期2021-05-01
卷号913期号:1页码:11
ISSN号0004-637X
DOI10.3847/1538-4357/abf3ca
通讯作者Konyves, Vera(vkonyves@uclan.ac.uk)
英文摘要We present the first 850 mu m polarization observations in the most active star-forming site of the Rosette Molecular Cloud (d similar to 1.6 kpc) in the wall of the Rosette Nebula, imaged with the SCUBA-2/POL-2 instruments of the James Clerk Maxwell telescope, as part of the B-Fields In Star-forming Region Observations 2 (BISTRO-2) survey. From the POL-2 data we find that the polarization fraction decreases with the 850 mu m continuum intensity with alpha = 0.49 +/- 0.08 in the p proportional to I (-alpha ) relation, which suggests that some fraction of the dust grains remain aligned at high densities. The north of our 850 mu m image reveals a "gemstone ring" morphology, which is a similar to 1 pc diameter ring-like structure with extended emission in the "head" to the southwest. We hypothesize that it might have been blown by feedback in its interior, while the B-field is parallel to its circumference in most places. In the south of our SCUBA-2 field the clumps are apparently connected with filaments that follow infrared dark clouds. Here, the POL-2 magnetic field orientations appear bimodal with respect to the large-scale Planck field. The mass of our effective mapped area is similar to 174 M (circle dot), which we calculate from 850 mu m flux densities. We compare our results with masses from large-scale emission-subtracted Herschel 250 mu m data and find agreement within 30%. We estimate the plane-of-sky B-field strength in one typical subregion using the Davis-Chandrasekhar-Fermi technique and find 80 +/- 30 mu G toward a clump and its outskirts. The estimated mass-to-flux ratio of lambda = 2.3 +/- 1.0 suggests that the B-field is not sufficiently strong to prevent gravitational collapse in this subregion.
WOS关键词H II REGIONS ; STAR-FORMING REGIONS ; GOULD BELT SURVEY ; NGC 2244 ; HERSCHEL OBSERVATIONS ; GRAIN ALIGNMENT ; IMAGING SURVEY ; DENSE CORES ; O STARS ; CLUSTERS
资助项目Science and Technology Facilities Council (STFC)[ST/R000786/1] ; Vietnam National Foundation for Science and Technology Development (NAFOSTED)[103.99-2019.368] ; NAOJ Fellowship ; JSPS KAKENHI[18K13586] ; JSPS KAKENHI[20K14527] ; New Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology[NRF-2019 R1A2C1010851] ; National Key R&D Program of China[2017YFA0402600] ; National Key R&D Program of China[2017YFA0402700] ; National Natural Science Foundation of China (NSFC)[U1731237] ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; 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-007010-MY3] ; Science and Technology Facilities Council of the United Kingdom ; Canada Foundation for Innovation ; Canadian Space Agency
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:000655326600001
出版者IOP PUBLISHING LTD
资助机构Science and Technology Facilities Council (STFC) ; Vietnam National Foundation for Science and Technology Development (NAFOSTED) ; NAOJ Fellowship ; JSPS KAKENHI ; New Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; NSF ; Ministry of Science and Technology of Taiwan ; Science and Technology Facilities Council of the United Kingdom ; Canada Foundation for Innovation ; Canadian Space Agency
源URL[http://ir.xao.ac.cn/handle/45760611-7/4182]  
专题恒星形成与演化研究团组
通讯作者Konyves, Vera
作者单位1.Nanjing Univ, Minist Educ, Key Lab Modern Astron & Astrophys, Nanjing 210023, Peoples R China
2.Nanjing Univ, Sch Astron & Space Sci, 163 Xianlin Ave, Nanjing 210023, Peoples R China
3.Natl Tsing Hua Univ, Dept Phys, Hsinchu 30013, Taiwan
4.Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan
5.Seoul Natl Univ, SNU Astron Res Ctr, 1 Gwanak Ro, Seoul 08826, South Korea
6.Seoul Natl Univ, Dept Earth Sci Educ, 1 Gwanak Ro, Seoul 08826, South Korea
7.Chinese Acad Sci, Natl Astron Observ, A20 Datun Rd, Beijing 100012, Peoples R China
8.Univ Montreal, Dept Phys, 1375 Ave Therese Lavoie Roux, Montreal, PQ H2V 0B3, Canada
9.Univ Montreal, Ctr Rech Astrophys Quebec, 1375 Ave Therese Lavoie Roux, Montreal, PQ H2V 0B3, Canada
10.East Asian Observ, 660 N Aohoku Pl,Univ Pk, Hilo, HI 96720 USA
推荐引用方式
GB/T 7714		 Konyves, Vera,Ward-Thompson, Derek,Pattle, Kate,et al. The JCMT BISTRO-2 Survey: The Magnetic Field in the Center of the Rosette Molecular Cloud[J]. ASTROPHYSICAL JOURNAL,2021,913(1):11.
APA Konyves, Vera.,Ward-Thompson, Derek.,Pattle, Kate.,Di Francesco, James.,Arzoumanian, Doris.,...&Qiu, Keping.(2021).The JCMT BISTRO-2 Survey: The Magnetic Field in the Center of the Rosette Molecular Cloud.ASTROPHYSICAL JOURNAL,913(1),11.
MLA Konyves, Vera,et al."The JCMT BISTRO-2 Survey: The Magnetic Field in the Center of the Rosette Molecular Cloud".ASTROPHYSICAL JOURNAL 913.1(2021):11.

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