JCMT POL-2 and BISTRO Survey Observations of Magnetic Fields in the L1689 Molecular Cloud

doi:10.3847/1538-4357/abcc6c

CORC > 新疆天文台 > 研究单元未命名 > 射电天文研究室 > 恒星形成与演化研究团组

	JCMT POL-2 and BISTRO Survey Observations of Magnetic Fields in the L1689 Molecular Cloud
	Pattle, Kate 1,29,30; Lai, Shih-Ping 1,28,29; Di Francesco, James 26,27; Sadavoy, Sarah 25; Ward-Thompson, Derek 24; Johnstone, Doug 26,27; Hoang, Thiem 22,23; Arzoumanian, Doris 21; Bastien, Pierre 19,20; Bourke, Tyler L.17,18
刊名	ASTROPHYSICAL JOURNAL
	2021-02-01
卷号	907 期号:2 页码:88
关键词	Star formation Interstellar magnetic fields Molecular clouds Interstellar medium Polarimetry Submillimeter astronomy Star-forming regions
ISSN号	0004-637X
DOI	10.3847/1538-4357/abcc6c
产权排序	30
英文摘要	We present 850 mu m polarization observations of the L1689 molecular cloud, part of the nearby Ophiuchus molecular cloud complex, taken with the POL-2 polarimeter on the James Clerk Maxwell Telescope (JCMT). We observe three regions of L1689: the clump L1689N which houses the IRAS 16293-2433 protostellar system, the starless clump SMM-16, and the starless core L1689B. We use the Davis-Chandrasekhar-Fermi method to estimate plane-of-sky field strengths of 366 +/- 55 mu G in L1689N, 284 +/- 34 mu G in SMM-16, and 72 +/- 33 mu G in L1689B, for our fiducial value of dust opacity. These values indicate that all three regions are likely to be magnetically transcritical with sub-Alfvenic turbulence. In all three regions, the inferred mean magnetic field direction is approximately perpendicular to the local filament direction identified in Herschel Space Telescope observations. The core-scale field morphologies for L1689N and L1689B are consistent with the cloud-scale field morphology measured by the Planck Space Observatory, suggesting that material can flow freely from large to small scales for these sources. Based on these magnetic field measurements, we posit that accretion from the cloud onto L1689N and L1689B may be magnetically regulated. However, in SMM-16, the clump-scale field is nearly perpendicular to the field seen on cloud scales by Planck, suggesting that it may be unable to efficiently accrete further material from its surroundings.
资助项目	Ministry of Science and Technology (Taiwan)[107-2119-M-001-031-MY3] ; Ministry of Science and Technology (Taiwan)[109-2112-M-007-010-MY3] ; Ministry of Science and Technology (Taiwan)[106-2119-M-007-021-MY3] ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) through the Mid-career Research Program[2019R1A2C1087045] ; FCT/MCTES through national funds (PIDDAC)[UID/FIS/04434/2019] ; FCT/MCTES through national funds (PIDDAC)[UIDB/04434/2020] ; Japan Society for the Promotion of Science (JSPS)[18H01250] ; Academia Sinica[AS-IA-106-M03] ; NAOJ Fellowship ; JSPS KAKENHI[18K13586] ; JSPS KAKENHI[20K14527] ; JSPS KAKENHI[19K14775] ; JSPS KAKENHI[18H05442] ; JSPS KAKENHI[15H02063] ; JSPS KAKENHI[22000005] ; New Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the NRF[NRF-2016R1C1B2013642] ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology[NRF-2019R1A2C1010851] ; Chinese Academy of Sciences[114231KYSB20200009] ; National Natural Science Foundation of China (NSFC)[12073061] ; National Science Foundation (NSF)[AST-1715876] ; Japan Society for Promotion of Science[KAKENHI 19H0193810] ; National Key R&D Program of China[2017YFA0402700] ; Science and Technology Facilities Council of the United Kingdom
WOS关键词	GOULD BELT SURVEY ; STARLESS CORES ; INTERSTELLAR CLOUDS ; RADIATIVE TORQUES ; INFALL MOTIONS ; CS 2-1 ; POLARIZATION ; N2H+ ; IRAS-16293-2422 ; OPHIUCHUS
WOS研究方向	Astronomy & Astrophysics
语种	英语
出版者	IOP PUBLISHING LTD
WOS记录号	WOS:000613660200001
资助机构	Ministry of Science and Technology (Taiwan) ; National Research Council of Canada ; Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Research Foundation of Korea (NRF) - Korea government (MSIT) through the Mid-career Research Program ; FCT/MCTES through national funds (PIDDAC) ; Japan Society for the Promotion of Science (JSPS) ; Academia Sinica ; NAOJ Fellowship ; JSPS KAKENHI ; New Faculty Startup Fund from Seoul National University ; Basic Science Research Program through the NRF ; Basic Science Research Program through the NRF - Ministry of Education, Science and Technology ; Chinese Academy of Sciences ; National Natural Science Foundation of China (NSFC) ; National Science Foundation (NSF) ; Japan Society for Promotion of Science ; National Key R&D Program of China ; Science and Technology Facilities Council of the United Kingdom
内容类型	期刊论文
源URL	[http://ir.xao.ac.cn/handle/45760611-7/3844]
专题	恒星形成与演化研究团组
通讯作者	Pattle, Kate
作者单位	1.Natl Tsing Hua Univ, Dept Phys, 101,Sect 2,Guangfu Rd, Hsinchu 30013, Taiwan 2.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China 3.Natl Astron Observ, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 4.Astrobiol Ctr, 2-21-1 Osawa, Mitaka, Tokyo 1818588, Japan 5.Natl Res Council Canada, Herzberg Astron & Astrophys Res Ctr, Domin Radio Astrophys Observ, POB 248, Penticton, BC V2A 6J9, Canada 6.Chinese Acad Sci, Shanghai Astron Observ, Key Lab Res Galaxies & Cosmol, 80 Nandan Rd, Shanghai 200030, Peoples R China 7.Seoul Natl Univ, Dept Earth Sci Educ, 1 Gwanak Ro, Seoul 08826, South Korea 8.Univ Tokyo, Dept Astron, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan 9.UCL, Dept Phys & Astron, London WC1E 6BT, England 10.Joint ALMA Observ, Alonso de Cordova 3107, Santiago, Chile
推荐引用方式 GB/T 7714	Pattle, Kate,Lai, Shih-Ping,Di Francesco, James,et al. JCMT POL-2 and BISTRO Survey Observations of Magnetic Fields in the L1689 Molecular Cloud[J]. ASTROPHYSICAL JOURNAL,2021,907(2):88.
APA	Pattle, Kate.,Lai, Shih-Ping.,Di Francesco, James.,Sadavoy, Sarah.,Ward-Thompson, Derek.,...&Tang, Xindi.(2021).JCMT POL-2 and BISTRO Survey Observations of Magnetic Fields in the L1689 Molecular Cloud.ASTROPHYSICAL JOURNAL,907(2),88.
MLA	Pattle, Kate,et al."JCMT POL-2 and BISTRO Survey Observations of Magnetic Fields in the L1689 Molecular Cloud".ASTROPHYSICAL JOURNAL 907.2(2021):88.