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The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43

Karoly, J, Ward-Thompson, D, Pattle, K, Berry, D, Whitworth, A, Kirk, J, Bastien, P, Ching, T-C, Coude, S, Hwang, J, Kwon, W, Soam, A, Wang, J-W, Hasegawa, T, Lai, S-P, Qiu, K, Arzoumanian, D, Bourke, TL, Byun, D-Y, Chen, H-RV , Chen, WP, Chen, M, Chen, Z, Cho, J, Choi, M, Choi, Y, Choi, Y, Chrysostomou, A, Chung, EJ, Dai, S, Debattista, V, Francesco, JD, Diep, PN, Doi, Y, Duan, H-Y, Duan, Y, Eswaraiah, C, Fanciullo, L, Fiege, J, Fissel, LM, Franzmann, E, Friberg, P, Friesen, R, Fuller, G, Furuya, R, Gledhill, T, Graves, S, Greaves, J, Griffin, M, Gu, Q, Han, I, Hoang, T, Houde, M, Hull, CLH, Inoue, T, Inutsuka, S-I, Iwasaki, K, Jeong, I-G, Johnstone, D, Konyves, V, Kang, J-H, Kang, M, Kataoka, A, Kawabata, K, Kemper, F, Kim, J, Kim, S, Kim, G, Kim, KH, Kim, M-R, Kim, K-T, Kim, H, Kirchschlager, F, Kobayashi, MIN, Koch, PM, Kusune, T, Kwon, J, Lacaille, K, Law, C-Y, Lee, CW, Lee, H, Lee, Y-H, Lee, C-F, Lee, J-E, Lee, S-S, Li, D, Li, D, Li, G, Li, H-B, Lin, S-J, Liu, H-L, Liu, T, Liu, S-Y, Liu, J, Longmore, S, Lu, X, Lyo, A-R, Mairs, S, Matsumura, M, Matthews, B, Moriarty-Schieven, G, Nagata, T, Nakamura, F, Nakanishi, H, Ngoc, NB, Ohashi, N, Onaka, T, Park, G, Parsons, H, Peretto, N, Priestley, F, Pyo, T-S, Qian, L, Rao, R, Rawlings, J, Rawlings, M, Retter, B, Richer, J, Rigby, A, Sadavoy, S, Saito, H, Savini, G, Seta, M, Sharma, E, Shimajiri, Y, Shinnaga, H, Tahani, M, Tamura, M, Tang, Y-W, Tang, X, Tomisaka, K, Tram, LN, Tsukamoto, Y, Viti, S, Wang, H, Wu, J, Xie, J, Yang, M-Z, Yen, H-W, Yoo, H, Yuan, J, Yun, H-S, Zenko, T, Zhang, G, Zhang, Y, Zhang, C-P, Zhou, J, Zhu, L, Looze, ID, Andre, P, Dowell, CD, Eden, DJ, Eyres, S, Falle, S, Gouellec, VJML, Poidevin, F, Robitaille, J-F and Loo, SV (2023) The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43. Astrophysical Journal, 952 (1). ISSN 0004-637X

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We present observations of polarized dust emission at 850 µm from the L43 molecular cloud which sits in the Ophiuchus cloud complex. The data were taken using SCUBA-2/POL-2 on the James Clerk Maxwell Telescope as a part of the BISTRO large program. L43 is a dense (NH2 ∼ 1022–1023 cm−2 ) complex molecular cloud with a submillimetre-bright starless core and two protostellar sources. There appears to be an evolutionary gradient along the isolated filament that L43 is embedded within, with the most evolved source closest to the Sco OB2 association. One of the protostars drives a CO outflow that has created a cavity to the southeast. We see a magnetic field that appears to be aligned with the cavity walls of the outflow, suggesting interaction with the outflow. We also find a magnetic field strength of up to ∼160±30 µG in the main starless core and up to ∼90±40 µG in the more diffuse, extended region. These field strengths give magnetically super- and sub-critical values respectively and both are found to be roughly trans-Alfv´enic. We also present a new method of data reduction for these denser but fainter objects like starless cores.

Item Type: Article
Uncontrolled Keywords: astro-ph.GA; astro-ph.GA
Subjects: Q Science > QB Astronomy
Q Science > QC Physics
Divisions: Astrophysics Research Institute
Publisher: American Astronomical Society; IOP Publishing
Related URLs:
SWORD Depositor: A Symplectic
Date Deposited: 25 Jul 2023 12:12
Last Modified: 25 Jul 2023 12:15
DOI or ID number: 10.3847/1538-4357/acd6f2
URI: https://researchonline.ljmu.ac.uk/id/eprint/19657
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