The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry
文献类型：期刊论文
| 作者 | Eswaraiah,Chakali2; Li,Di2,3,4 ; Furuya,Ray S.5; Hasegawa,Tetsuo6; Ward-Thompson,Derek7; Qiu,Keping8,9; Ohashi,Nagayoshi10; Pattle,Kate11; Sadavoy,Sarah12; Hull,Charles L. H.13,14
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| 刊名 | The Astrophysical Journal Letters
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| 出版日期 | 2021-05-01 |
| 卷号 | 912期号:2 |
| ISSN号 | 2041-8205 |
| 关键词 | Dust continuum emission Polarimetry Low mass stars Dense interstellar clouds Interstellar magnetic fields |
| DOI | 10.3847/2041-8213/abeb1c |
| 英文摘要 | Abstract We have obtained sensitive dust continuum polarization observations at 850 μm in the B213 region of Taurus using POL-2 on SCUBA-2 at the James Clerk Maxwell Telescope as part of the B-fields in STar-forming Region Observations (BISTRO) survey. These observations allow us to probe magnetic field (B-field) at high spatial resolution (～2000 au or ～0.01 pc at 140 pc) in two protostellar cores (K04166 and K04169) and one prestellar core (Miz-8b) that lie within the B213 filament. Using the Davis–Chandrasekhar–Fermi method, we estimate the B-field strengths in K04166, K04169, and Miz-8b to be 38 ± 14, 44 ± 16, and 12 ± 5 μG, respectively. These cores show distinct mean B-field orientations. The B-field in K04166 is well ordered and aligned parallel to the orientations of the core minor axis, outflows, core rotation axis, and large-scale uniform B-field, in accordance with magnetically regulated star formation via ambipolar diffusion taking place in K04166. The B-field in K04169 is found to be ordered but oriented nearly perpendicular to the core minor axis and large-scale B-field and not well correlated with other axes. In contrast, Miz-8b exhibits a disordered B-field that shows no preferred alignment with the core minor axis or large-scale field. We found that only one core, K04166, retains a memory of the large-scale uniform B-field. The other two cores, K04169 and Miz-8b, are decoupled from the large-scale field. Such a complex B-field configuration could be caused by gas inflow onto the filament, even in the presence of a substantial magnetic flux. |
| 语种 | 英语 |
| 出版者 | The American Astronomical Society |
| WOS记录号 | IOP:2041-8205-912-2-ABEB1C |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/56928]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Eswaraiah,Chakali |
| 作者单位 | 1.Academia Sinica Institute of Astronomy and Astrophysics, P.O. Box 23-141, Taipei 10617, Taiwan 2.National Astronomical Observatories, Chinese Academy of Sciences, A20 Datun Road, Chaoyang District, Beijing 100012, People’s Republic of China eswaraiahc@nao.cas.cn, eswaraiahc@outlook.com 3.University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China; dili@nao.cas.cn 4.NAOC-UKZN Computational Astrophysics Centre, University of KwaZulu-Natal, Durban 4000, South Africa 5.Institute of Liberal Arts and Sciences, Tokushima University, Minami Jousanajima-machi 1-1, Tokushima 770-8502, Japan; rsf@tokushima-u.ac.jp 6.National Astronomical Observatory of Japan, National Institutes of Natural Sciences, Osawa, Mitaka, Tokyo 181-8588, Japan 7.Jeremiah Horrocks Institute, University of Central Lancashire, Preston PR1 2HE, UK 8.School of Astronomy and Space Science, Nanjing University, 163 Xianlin Avenue, Nanjing 210023, People's Republic of China 9.Key Laboratory of Modern Astronomy and Astrophysics (Nanjing University), Ministry of Education, Nanjing 210023, People's Republic of China 10.Academia Sinica Institute of Astronomy and Astrophysics, No. 1, Sec. 4., Roosevelt Road, Taipei 10617, Taiwan |
| 推荐引用方式 GB/T 7714 | Eswaraiah,Chakali,Li,Di,Furuya,Ray S.,et al. The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry[J]. The Astrophysical Journal Letters,2021,912(2). |
| APA | Eswaraiah,Chakali.,Li,Di.,Furuya,Ray S..,Hasegawa,Tetsuo.,Ward-Thompson,Derek.,...&van Loo,Sven.(2021).The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry.The Astrophysical Journal Letters,912(2). |
| MLA | Eswaraiah,Chakali,et al."The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry".The Astrophysical Journal Letters 912.2(2021). |
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