JCMT POL-2 and BISTRO Survey Observations of Magnetic Fields in the L1689 Molecular Cloud
文献类型：期刊论文
| 作者 | Pattle, Kate1,2,3; Lai, Shih-Ping2,3,4; Di Francesco, James5,6; Sadavoy, Sarah7; Ward-Thompson, Derek8; Johnstone, Doug5,6; Hoang, Thiem9,10; Arzoumanian, Doris11; Bastien, Pierre12,13; Bourke, Tyler L.14,15 |
| 刊名 | ASTROPHYSICAL JOURNAL
 |
| 出版日期 | 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. |
| WOS关键词 | GOULD BELT SURVEY ; STARLESS CORES ; INTERSTELLAR CLOUDS ; RADIATIVE TORQUES ; INFALL MOTIONS ; CS 2-1 ; POLARIZATION ; N2H+ ; IRAS-16293-2422 ; OPHIUCHUS |
| 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研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000613660200001 |
| 出版者 | IOP PUBLISHING LTD |
| 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 |
| 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 Univ Ireland Galway, Ctr Astron, Univ Rd, Galway, Ireland 2.Natl Tsing Hua Univ, Inst Astron, 101,Sect 2,Guangfu Rd, Hsinchu 30013, Taiwan 3.Natl Tsing Hua Univ, Dept Phys, 101,Sect 2,Guangfu Rd, Hsinchu 30013, Taiwan 4.Acad Sinica, Inst Astron & Astrophys, 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan 5.NRC Herzberg Astron & Astrophys, 5071 West Saanich Rd, Victoria, BC V9E 2E7, Canada 6.Univ Victoria, Dept Phys & Astron, Victoria, BC V8W 2Y2, Canada 7.Queens Univ, Dept Phys Engn Phys & Astrophys, Kingston, ON K7L 3N6, Canada 8.Univ Cent Lancashire, Jeremiah Horrocks Inst, Preston PR1 2HE, Lancs, England 9.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea 10.Univ Sci & Technol, 217 Gajeong Ro, Daejeon 34113, South Korea |
| 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. |
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