中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 新疆天文台
  3. 研究单元未命名
  4. 射电天文研究室
  5. 恒星形成与演化研究团组
The JCMT BISTRO Survey: Alignment between Outflows and Magnetic Fields in Dense Cores/Clumps

文献类型：期刊论文

作者Yen, Hsi-Wei1; Koch, Patrick M.1; Hull, Charles L. H.2,3; Ward-Thompson, Derek4; Bastien, Pierre5,6; Hasegawa, Tetsuo7; Kwon, Woojin8,9; Lai, Shih-Ping1,10,11; Qiu, Keping12,13; Ching, Tao-Chung14,15
刊名ASTROPHYSICAL JOURNAL
出版日期2021
卷号907期号:1页码:33
ISSN号0004-637X
关键词Star formation Star forming regions Protostars Interstellar magnetic fields
DOI10.3847/1538-4357/abca99
产权排序42
英文摘要We compare the directions of molecular outflows of 62 low-mass Class 0 and I protostars in nearby (<450 pc) star-forming regions with the mean orientations of the magnetic fields on 0.05-0.5 pc scales in the dense cores/clumps where they are embedded. The magnetic field orientations were measured using the JCMT POL-2 data taken by the BISTRO-1 survey and from the archive. The outflow directions were observed with interferometers in the literature. The observed distribution of the angles between the outflows and the magnetic fields peaks between 15 degrees and 35 degrees. After considering projection effects, our results could suggest that the outflows tend to be misaligned with the magnetic fields by 50 degrees 15 degrees in three-dimensional space and are less likely (but not ruled out) randomly oriented with respect to the magnetic fields. There is no correlation between the misalignment and the bolometric temperatures in our sample. In several sources, the small-scale (1000-3000 au) magnetic field is more misaligned with the outflow than the large-scale magnetic field, suggesting that the small-scale magnetic field has been twisted by the dynamics. In comparison with turbulent MHD simulations of core formation, our observational results are more consistent with models in which the energy densities in the magnetic field and the turbulence of the gas are comparable. Our results also suggest that the misalignment alone cannot sufficiently reduce the efficiency of magnetic braking to enable formation of the observed number of large Keplerian disks with sizes larger than 30-50 au.
WOS关键词MOLECULAR CLOUD CORES ; ANGULAR-MOMENTUM ; DISC FORMATION ; PROTOPLANETARY DISKS ; STAR-FORMATION ; MASS ; BRAKING ; PROTOSTARS ; OPHIUCHUS ; COLLAPSE
资助项目National Key R&D Program of China[2017YFA0402700] ; National Key R&D Program of China[2017YFA0402600] ; Science and Technology Facilities Council of the United Kingdom ; Canada Foundation for Innovation ; Ministry of Science and Technology (MOST) grant in Taiwan[MOST 108-2112-M-001-003-MY2] ; MOST in Taiwan[108-2112-M-001-012] ; MOST in Taiwan[109-2112-M-001-022] ; MOST in Taiwan[108-2112-M-001-004-MY2] ; Academia Sinica Career Development Award ; NAOJ Fellowship ; JSPS KAKENHI grants[18K13586] ; JSPS KAKENHI grants[20K14527] ; JSPS KAKENHI grants[18H05442] ; JSPS KAKENHI grants[15H02063] ; JSPS KAKENHI grants[22000005] ; New Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the National Research Foundation of Korea[NRF-2016R1C1B2013642] ; Ministry of Science and Technology of Taiwan[MOST 106-2119-M-007-021-MY3] ; Ministry of Science and Technology of Taiwan[109-2112-M-007-010-MY3] ; National Natural Science Foundation of China (NSFC)[U1731237] ; National Natural Science Foundation of China (NSFC)[11590781] ; National Natural Science Foundation of China (NSFC)[11629302] ; National Natural Science Foundation of China (NSFC)[12073061] ; National Research Foundation of Korea (NRF) - Korea government (MSIT)[NRF-2019R1I1A1A01042480] ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Vietnam National Foundation for Science and Technology Development (NAFOSTED)[103.99-2019.368] ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology[NRF2019R1A2C1010851] ; International Partnership Program of the Chinese Academy of Sciences[114231KYSB20200009] ; Shanghai Pujiang Program[20PJ1415500] ; NSF[AST-1715876] ; Japan Society for Promotion of Science[KAKENHI 19H0193810]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000610896700001
资助机构National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom ; Canada Foundation for Innovation ; Ministry of Science and Technology (MOST) grant in Taiwan ; MOST in Taiwan ; Academia Sinica Career Development Award ; NAOJ Fellowship ; JSPS KAKENHI grants ; New Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the National Research Foundation of Korea ; Ministry of Science and Technology of Taiwan ; National Natural Science Foundation of China (NSFC) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; Vietnam National Foundation for Science and Technology Development (NAFOSTED) ; Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology ; International Partnership Program of the Chinese Academy of Sciences ; Shanghai Pujiang Program ; NSF ; Japan Society for Promotion of Science
源URL[http://ir.xao.ac.cn/handle/45760611-7/3835]  
专题恒星形成与演化研究团组
通讯作者Yen, Hsi-Wei
作者单位1.Acad Sinica, Inst Astron & Astrophys, 11F Astromath Bldg,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan
2.NAOJ Chile, Natl Astron Observ Japan, Alonso Cordova 3788,Off 61B, Santiago 7630422, Chile
3.Joint ALMA Observ, Alonso Cordova 3107, Santiago, Chile
4.Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England
5.Univ Montreal, Ctr Rech Astrophys Quebec, CP 6128 Succ Centre Ville, Montreal, PQ H3C 3J7, Canada
6.Univ Montreal, Dept Phys, CP 6128 Succ Centre Ville, Montreal, PQ H3C 3J7, Canada
7.Natl Inst Nat Sci, Natl Astron Observ Japan, Mitaka, Tokyo 1818588, Japan
8.Seoul Natl Univ, Dept Earth Sci Educ, 1 Gwanak Ro, Seoul 08826, South Korea
9.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea
10.Natl Tsing Hua Univ, Inst Astron, Hsinchu 30013, Taiwan
推荐引用方式
GB/T 7714		 Yen, Hsi-Wei,Koch, Patrick M.,Hull, Charles L. H.,et al. The JCMT BISTRO Survey: Alignment between Outflows and Magnetic Fields in Dense Cores/Clumps[J]. ASTROPHYSICAL JOURNAL,2021,907(1):33.
APA Yen, Hsi-Wei.,Koch, Patrick M..,Hull, Charles L. H..,Ward-Thompson, Derek.,Bastien, Pierre.,...&Zhang, Chuan-Peng.(2021).The JCMT BISTRO Survey: Alignment between Outflows and Magnetic Fields in Dense Cores/Clumps.ASTROPHYSICAL JOURNAL,907(1),33.
MLA Yen, Hsi-Wei,et al."The JCMT BISTRO Survey: Alignment between Outflows and Magnetic Fields in Dense Cores/Clumps".ASTROPHYSICAL JOURNAL 907.1(2021):33.

入库方式： OAI收割

来源：新疆天文台

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。