The JCMT BISTRO Survey: The Magnetic Fields of the IC 348 Star-forming Region
Abstract We present 850 μ m polarization observations of the IC 348 star-forming region in the Perseus molecular cloud as part of the B-fields In STar-forming Region Observation survey. We study the magnetic properties of two cores (HH 211 MMS and IC 348 MMS) and a filamentary structure of IC 348. We find that the overall field tends to be more perpendicular than parallel to the filamentary structure of the region. The polarization fraction decreases with intensity, and we estimate the trend by power law and the mean of the Rice distribution fittings. The power indices for the cores are much smaller than 1, indicative of possible grain growth to micron size in the cores. We also measure the magnetic field strengths of the two cores and the filamentary area separately by applying the Davis–Chandrasekhar–Fermi method and its alternative version for compressed medium. The estimated mass-to-flux ratios are 0.45–2.20 and 0.63–2.76 for HH 211 MMS and IC 348 MMS, respectively, while the ratios for the filament are 0.33–1.50. This result may suggest that the transition from subcritical to supercritical conditions occurs at the core scale (∼0.05 pc) in the region. In addition, we study the energy balance of the cores and find that the relative strength of turbulence to the magnetic field tends to be stronger for IC 348 MMS than for HH 211 MMS. The result could potentially explain the different configurations inside the two cores: a single protostellar system in HH 211 MMS and multiple protostars in IC 348 MMS.
Authors
- Brenda C. Matthews (ORCID: https://orcid.org/0000-0003-3017-9577)
- Kyoung Hee Kim (ORCID: https://orcid.org/0000-0001-9597-7196)
- Hua-bai Li (ORCID: https://orcid.org/0000-0003-2641-9240)
- Victor P. Debattista (ORCID: https://orcid.org/0000-0001-7902-0116)
- Eun Jung Chung (ORCID: https://orcid.org/0000-0003-0014-1527)
- S. A. E. G. Falle
- P. André (ORCID: https://orcid.org/0000-0002-3413-2293)
- Xindi Tang (ORCID: https://orcid.org/0000-0002-4154-4309)
- Erica Franzmann (ORCID: https://orcid.org/0000-0003-2142-0357)
- Hyosung Kim (ORCID: https://orcid.org/0000-0003-3568-6500)
- Tie Liu (ORCID: https://orcid.org/0000-0002-5286-2564)
- J. S. Greaves (ORCID: https://orcid.org/0000-0002-3133-413X)
- Brendan Retter
- F. Kemper (ORCID: https://orcid.org/0000-0003-2743-8240)
- J. M. Kirk (ORCID: https://orcid.org/0000-0002-4552-7477)
- Jinghua Yuan (ORCID: https://orcid.org/0000-0001-8060-3538)
- Jihye Hwang (ORCID: https://orcid.org/0000-0001-7866-2686)
- D. Ward–Thompson (ORCID: https://orcid.org/0000-0003-1140-2761)
- G. A. Fuller (ORCID: https://orcid.org/0000-0001-8509-1818)
- S. Lai (ORCID: https://orcid.org/0000-0001-5522-486X)
- Ilse De Looze (ORCID: https://orcid.org/0000-0001-9419-6355)
- Simon Coudé (ORCID: https://orcid.org/0000-0002-0859-0805)
- F D Priestley (ORCID: https://orcid.org/0000-0002-5858-6265)
- C. D. Dowell (ORCID: https://orcid.org/0009-0002-0098-6183)
- Jungmi Kwon (ORCID: https://orcid.org/0000-0003-2815-7774)
- J. M. C. Rawlings (ORCID: https://orcid.org/0000-0001-5560-1303)
- Tetsuo Hasegawa (ORCID: https://orcid.org/0000-0003-1853-0184)
- Kevin Lacaille (ORCID: https://orcid.org/0000-0001-9870-5663)
- Lapo Fanciullo (ORCID: https://orcid.org/0000-0001-9930-9240)
- Masumichi Seta (ORCID: https://orcid.org/0000-0002-9450-6779)
- S. Van Loo (ORCID: https://orcid.org/0000-0003-4746-8500)
- Shinyoung Kim (ORCID: https://orcid.org/0000-0001-9333-5608)
- Jungyeon Cho (ORCID: https://orcid.org/0000-0003-1725-4376)
- Takashi Onaka (ORCID: https://orcid.org/0000-0002-8234-6747)
- Ji‐hyun Kang (ORCID: https://orcid.org/0000-0001-7379-6263)
- Sarah Graves (ORCID: https://orcid.org/0000-0001-9361-5781)
- Akimasa Kataoka (ORCID: https://orcid.org/0000-0003-4562-4119)
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- A. J. Rigby (ORCID: https://orcid.org/0000-0002-3351-2200)
- Thiem Hoang (ORCID: https://orcid.org/0000-0003-2017-0982)
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- Chin‐Fei Lee (ORCID: https://orcid.org/0000-0002-3024-5864)
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- Mehrnoosh Tahani (ORCID: https://orcid.org/0000-0001-8749-1436)
- Nagayoshi Ohashi (ORCID: https://orcid.org/0000-0003-0998-5064)
- Tsuyoshi Inoue (ORCID: https://orcid.org/0000-0002-7935-8771)
- Wen-Ping Chen (ORCID: https://orcid.org/0000-0003-0262-272X)
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- Tetsuya Zenko
- Jeong‐Eun Lee (ORCID: https://orcid.org/0000-0003-3119-2087)
- Hongli Liu (ORCID: https://orcid.org/0000-0003-3343-9645)
- Jia-Wei Wang (ORCID: https://orcid.org/0000-0002-6668-974X)
- Di Li (ORCID: https://orcid.org/0000-0003-3010-7661)
- Yunhee Choi
- Jongsoo Kim (ORCID: https://orcid.org/0000-0002-1229-0426)
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- Meng-Zhe Yang (ORCID: https://orcid.org/0009-0003-5699-2723)
- Mike Chen
- Sophia Dai
Publication Details
- Journal
- The Astrophysical Journal
- Published
- 2024-11-29
- DOI
- https://doi.org/10.3847/1538-4357/ad88ed
- Citations
- 5
- Primary Topic
- Astrophysics and Star Formation Studies
- Type
- article
- Field-Weighted Citation Impact
- 1.66
Funders
- National Science Foundation
- National Astronomical Research Institute of Thailand
- National Research Foundation
- National Natural Science Foundation of China
- Academia Sinica
- Seoul National University
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek
- Korea Astronomy and Space Science Institute
- National Research Foundation of Korea
- Ministry of Science and Technology, Taiwan
- Ministerio de Ciencia e Innovación
- National Astronomical Observatory of Japan
- Ministry of Science and ICT, South Korea
- National Science and Technology Council
- Natural Sciences and Engineering Research Council of Canada
- Science and Technology Facilities Council