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

Janik Karoly; Derek Ward-Thompson; Kate Pattle; David Berry; Anthony Whitworth; Jason Kirk; Pierre Bastien; Tao-Chung Ching; Simon Coudé; Jihye Hwang; Woojin Kwon; Archana Soam; Jia-Wei Wang; Tetsuo Hasegawa; Shih-Ping Lai; Keping Qiu; Doris Arzoumanian; Tyler L. Bourke; Do-Young Byun; Huei-Ru Vivien Chen; Wen Ping Chen; Mike Chen; Zhiwei Chen; Jungyeon Cho; Minho Choi; Youngwoo Choi; Yunhee Choi; Antonio Chrysostomou; Eun Jung Chung; Sophia Dai; Victor Debattista; James Di Francesco; Pham Ngoc Diep; Yasuo Doi; Hao-Yuan Duan; Yan Duan; Chakali Eswaraiah; Lapo Fanciullo; Jason Fiege; Laura M. Fissel; Erica Franzmann; Per Friberg; Rachel Friesen; Gary Fuller; Ray Furuya; Tim Gledhill; Sarah Graves; Jane Greaves; Matt Griffin; Qilao Gu; Ilseung Han; Thiem Hoang; Martin Houde; Charles L. H. Hull; Tsuyoshi Inoue; Shu-ichiro Inutsuka; Kazunari Iwasaki; Il-Gyo Jeong; Doug Johnstone; Vera Könyves; Ji-hyun Kang; Miju Kang; Akimasa Kataoka; Koji Kawabata; Francisca Kemper; Jongsoo Kim; Shinyoung Kim; Gwanjeong Kim; Kyoung Hee Kim; Mi-Ryang Kim; Kee-Tae Kim; Hyosung Kim; Florian Kirchschlager; Masato I. N. Kobayashi; Patrick M. Koch; Takayoshi Kusune; Jungmi Kwon; Kevin Lacaille; Chi-Yan Law; Chang Won Lee; Hyeseung Lee; Yong-Hee Lee; Chin-Fei Lee; Jeong-Eun Lee; Sang-Sung Lee; Dalei Li; Di Li; Guangxing Li; Hua-bai Li; Sheng-Jun Lin; Hong-Li Liu; Tie Liu; Sheng-Yuan Liu; Junhao Liu; Steven Longmore; Xing Lu; A-Ran Lyo; Steve Mairs; Masafumi Matsumura; Brenda Matthews; Gerald Moriarty-Schieven; Tetsuya Nagata; Fumitaka Nakamura; Hiroyuki Nakanishi; Nguyen Bich Ngoc; Nagayoshi Ohashi; Takashi Onaka; Geumsook Park; Harriet Parsons; Nicolas Peretto; Felix Priestley; Tae-Soo Pyo; Lei Qian; Ramprasad Rao; Jonathan Rawlings; Mark Rawlings; Brendan Retter; John Richer; Andrew Rigby; Sarah Sadavoy; Hiro Saito; Giorgio Savini; Masumichi Seta; Ekta Sharma; Yoshito Shimajiri; Hiroko Shinnaga; Mehrnoosh Tahani; Motohide Tamura; Ya-Wen Tang; Xindi Tang; Kohji Tomisaka; Le Ngoc Tram; Yusuke Tsukamoto; Serena Viti; Hongchi Wang; Jintai Wu; Jinjin Xie; Meng-Zhe Yang; Hsi-Wei Yen; Hyunju Yoo; Jinghua Yuan; Hyeong-Sik Yun; Tetsuya Zenko; Guoyin Zhang; Yapeng Zhang; Chuan-Peng Zhang; Jianjun Zhou; Lei Zhu; Ilse de Looze; Philippe André; C. Darren Dowell; David Eden; Stewart Eyres; Sam Falle; Valentin J. M. Le Gouellec; Frédérick Poidevin; Jean-François Robitaille; Sven van Loo

doi:10.3847/1538-4357/acd6f2

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

Janik Karoly, Derek Ward-Thompson, Kate Pattle, David Berry, Anthony Whitworth, Jason Kirk, Pierre Bastien, Tao-Chung Ching, Simon Coudé, Jihye Hwang, Woojin Kwon, Archana Soam, Jia-Wei Wang, Tetsuo Hasegawa, Shih-Ping Lai, Keping Qiu, Doris Arzoumanian, Tyler L. Bourke, Do-Young Byun, Huei-Ru Vivien ChenWen Ping Chen, Mike Chen, Zhiwei Chen, Jungyeon Cho, Minho Choi, Youngwoo Choi, Yunhee Choi, Antonio Chrysostomou, Eun Jung Chung, Sophia Dai, Victor Debattista, James Di Francesco, Pham Ngoc Diep, Yasuo Doi, Hao-Yuan Duan, Yan Duan, Chakali Eswaraiah, Lapo Fanciullo, Jason Fiege, Laura M. Fissel, Erica Franzmann, Per Friberg, Rachel Friesen, Gary Fuller, Ray Furuya, Tim Gledhill, Sarah Graves, Jane Greaves, Matt Griffin, Qilao Gu, Ilseung Han, Thiem Hoang, Martin Houde, Charles L. H. Hull, Tsuyoshi Inoue, Shu-ichiro Inutsuka, Kazunari Iwasaki, Il-Gyo Jeong, Doug Johnstone, Vera Könyves, Ji-hyun Kang, Miju Kang, Akimasa Kataoka, Koji Kawabata, Francisca Kemper, Jongsoo Kim, Shinyoung Kim, Gwanjeong Kim, Kyoung Hee Kim, Mi-Ryang Kim, Kee-Tae Kim, Hyosung Kim, Florian Kirchschlager, Masato I. N. Kobayashi, Patrick M. Koch, Takayoshi Kusune, Jungmi Kwon, Kevin Lacaille, Chi-Yan Law, Chang Won Lee, Hyeseung Lee, Yong-Hee Lee, Chin-Fei Lee, Jeong-Eun Lee, Sang-Sung Lee, Dalei Li, Di Li, Guangxing Li, Hua-bai Li, Sheng-Jun Lin, Hong-Li Liu, Tie Liu, Sheng-Yuan Liu, Junhao Liu, Steven Longmore, Xing Lu, A-Ran Lyo, Steve Mairs, Masafumi Matsumura, Brenda Matthews, Gerald Moriarty-Schieven, Tetsuya Nagata, Fumitaka Nakamura, Hiroyuki Nakanishi, Nguyen Bich Ngoc, Nagayoshi Ohashi, Takashi Onaka, Geumsook Park, Harriet Parsons, Nicolas Peretto, Felix Priestley, Tae-Soo Pyo, Lei Qian, Ramprasad Rao, Jonathan Rawlings, Mark Rawlings, Brendan Retter, John Richer, Andrew Rigby, Sarah Sadavoy, Hiro Saito, Giorgio Savini, Masumichi Seta, Ekta Sharma, Yoshito Shimajiri, Hiroko Shinnaga, Mehrnoosh Tahani, Motohide Tamura, Ya-Wen Tang, Xindi Tang, Kohji Tomisaka, Le Ngoc Tram, Yusuke Tsukamoto, Serena Viti, Hongchi Wang, Jintai Wu, Jinjin Xie, Meng-Zhe Yang, Hsi-Wei Yen, Hyunju Yoo, Jinghua Yuan, Hyeong-Sik Yun, Tetsuya Zenko, Guoyin Zhang, Yapeng Zhang, Chuan-Peng Zhang, Jianjun Zhou, Lei Zhu, Ilse de Looze, Philippe André, C. Darren Dowell, David Eden, Stewart Eyres, Sam Falle, Valentin J. M. Le Gouellec, Frédérick Poidevin, Jean-François Robitaille, Sven van Loo

University of Hertfordshire

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Abstract

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 submillimeter-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 subcritical values, respectively, and both are found to be roughly trans-Alfvénic. We also present a new method of data reduction for these denser but fainter objects like starless cores.

Original language	English
Article number	29
Pages (from-to)	1-18
Number of pages	18
Journal	The Astrophysical Journal
Volume	952
Issue number	1
Early online date	14 Jul 2023
DOIs	https://doi.org/10.3847/1538-4357/acd6f2
Publication status	Published - 14 Jul 2023

Keywords

Dust continuum emission
Stellar-interstellar interactions
Starlight polarization
Young stellar objects
Molecular clouds
Interstellar magnetic fields

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10.3847/1538-4357/acd6f2Licence: CC BY

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© 2023 The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/
Final published version, 1.98 MBLicence: CC BY

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Karoly, J., Ward-Thompson, D., Pattle, K., Berry, D., Whitworth, A., Kirk, J., Bastien, P., Ching, T.-C., Coudé, S., Hwang, J., Kwon, W., Soam, A., Wang, J.-W., Hasegawa, T., Lai, S.-P., Qiu, K., Arzoumanian, D., Bourke, T. L., Byun, D.-Y., ... van Loo, S. (2023). The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43. The Astrophysical Journal, 952(1), 1-18. Article 29. https://doi.org/10.3847/1538-4357/acd6f2

@article{06d5dc81f4e442b39becbfb72c536c93,

title = "The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43",

abstract = "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 submillimeter-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 subcritical values, respectively, and both are found to be roughly trans-Alfv{\'e}nic. We also present a new method of data reduction for these denser but fainter objects like starless cores.",

keywords = "Dust continuum emission, Stellar-interstellar interactions, Starlight polarization, Young stellar objects, Molecular clouds, Interstellar magnetic fields",

author = "Janik Karoly and Derek Ward-Thompson and Kate Pattle and David Berry and Anthony Whitworth and Jason Kirk and Pierre Bastien and Tao-Chung Ching and Simon Coud{\'e} and Jihye Hwang and Woojin Kwon and Archana Soam and Jia-Wei Wang and Tetsuo Hasegawa and Shih-Ping Lai and Keping Qiu and Doris Arzoumanian and Bourke, {Tyler L.} and Do-Young Byun and Chen, {Huei-Ru Vivien} and Chen, {Wen Ping} and Mike Chen and Zhiwei Chen and Jungyeon Cho and Minho Choi and Youngwoo Choi and Yunhee Choi and Antonio Chrysostomou and Chung, {Eun Jung} and Sophia Dai and Victor Debattista and {Di Francesco}, James and Diep, {Pham Ngoc} and Yasuo Doi and Hao-Yuan Duan and Yan Duan and Chakali Eswaraiah and Lapo Fanciullo and Jason Fiege and Fissel, {Laura M.} and Erica Franzmann and Per Friberg and Rachel Friesen and Gary Fuller and Ray Furuya and Tim Gledhill and Sarah Graves and Jane Greaves and Matt Griffin and Qilao Gu and Ilseung Han and Thiem Hoang and Martin Houde and Hull, {Charles L. H.} and Tsuyoshi Inoue and Shu-ichiro Inutsuka and Kazunari Iwasaki and Il-Gyo Jeong and Doug Johnstone and Vera K{\"o}nyves and Ji-hyun Kang and Miju Kang and Akimasa Kataoka and Koji Kawabata and Francisca Kemper and Jongsoo Kim and Shinyoung Kim and Gwanjeong Kim and Kim, {Kyoung Hee} and Mi-Ryang Kim and Kee-Tae Kim and Hyosung Kim and Florian Kirchschlager and Kobayashi, {Masato I. N.} and Koch, {Patrick M.} and Takayoshi Kusune and Jungmi Kwon and Kevin Lacaille and Chi-Yan Law and Lee, {Chang Won} and Hyeseung Lee and Yong-Hee Lee and Chin-Fei Lee and Jeong-Eun Lee and Sang-Sung Lee and Dalei Li and Di Li and Guangxing Li and Hua-bai Li and Sheng-Jun Lin and Hong-Li Liu and Tie Liu and Sheng-Yuan Liu and Junhao Liu and Steven Longmore and Xing Lu and A-Ran Lyo and Steve Mairs and Masafumi Matsumura and Brenda Matthews and Gerald Moriarty-Schieven and Tetsuya Nagata and Fumitaka Nakamura and Hiroyuki Nakanishi and Ngoc, {Nguyen Bich} and Nagayoshi Ohashi and Takashi Onaka and Geumsook Park and Harriet Parsons and Nicolas Peretto and Felix Priestley and Tae-Soo Pyo and Lei Qian and Ramprasad Rao and Jonathan Rawlings and Mark Rawlings and Brendan Retter and John Richer and Andrew Rigby and Sarah Sadavoy and Hiro Saito and Giorgio Savini and Masumichi Seta and Ekta Sharma and Yoshito Shimajiri and Hiroko Shinnaga and Mehrnoosh Tahani and Motohide Tamura and Ya-Wen Tang and Xindi Tang and Kohji Tomisaka and Tram, {Le Ngoc} and Yusuke Tsukamoto and Serena Viti and Hongchi Wang and Jintai Wu and Jinjin Xie and Meng-Zhe Yang and Hsi-Wei Yen and Hyunju Yoo and Jinghua Yuan and Hyeong-Sik Yun and Tetsuya Zenko and Guoyin Zhang and Yapeng Zhang and Chuan-Peng Zhang and Jianjun Zhou and Lei Zhu and {de Looze}, Ilse and Philippe Andr{\'e} and Dowell, {C. Darren} and David Eden and Stewart Eyres and Sam Falle and {Le Gouellec}, {Valentin J. M.} and Fr{\'e}d{\'e}rick Poidevin and Jean-Fran{\c c}ois Robitaille and {van Loo}, Sven",

note = "{\textcopyright} 2023 The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY), https://creativecommons.org/licenses/by/4.0/",

year = "2023",

month = jul,

day = "14",

doi = "10.3847/1538-4357/acd6f2",

language = "English",

volume = "952",

pages = "1--18",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1",

}

Karoly, J, Ward-Thompson, D, Pattle, K, Berry, D, Whitworth, A, Kirk, J, Bastien, P, Ching, T-C, Coudé, 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, Di Francesco, J, 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, Iwasaki, K, Jeong, I-G, Johnstone, D, Könyves, V, Kang, J, 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, 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, de Looze, I, André, P, Dowell, CD, Eden, D, Eyres, S, Falle, S, Le Gouellec, VJM, Poidevin, F, Robitaille, J-F & van Loo, S 2023, 'The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43', The Astrophysical Journal, vol. 952, no. 1, 29, pp. 1-18. https://doi.org/10.3847/1538-4357/acd6f2

TY - JOUR

T1 - The JCMT BISTRO Survey: Studying the Complex Magnetic Field of L43

AU - Karoly, Janik

AU - Ward-Thompson, Derek

AU - Pattle, Kate

AU - Berry, David

AU - Whitworth, Anthony

AU - Kirk, Jason

AU - Bastien, Pierre

AU - Ching, Tao-Chung

AU - Coudé, Simon

AU - Hwang, Jihye

AU - Kwon, Woojin

AU - Soam, Archana

AU - Wang, Jia-Wei

AU - Hasegawa, Tetsuo

AU - Lai, Shih-Ping

AU - Qiu, Keping

AU - Arzoumanian, Doris

AU - Bourke, Tyler L.

AU - Byun, Do-Young

AU - Chen, Huei-Ru Vivien

AU - Chen, Wen Ping

AU - Chen, Mike

AU - Chen, Zhiwei

AU - Cho, Jungyeon

AU - Choi, Minho

AU - Choi, Youngwoo

AU - Choi, Yunhee

AU - Chrysostomou, Antonio

AU - Chung, Eun Jung

AU - Dai, Sophia

AU - Debattista, Victor

AU - Di Francesco, James

AU - Diep, Pham Ngoc

AU - Doi, Yasuo

AU - Duan, Hao-Yuan

AU - Duan, Yan

AU - Eswaraiah, Chakali

AU - Fanciullo, Lapo

AU - Fiege, Jason

AU - Fissel, Laura M.

AU - Franzmann, Erica

AU - Friberg, Per

AU - Friesen, Rachel

AU - Fuller, Gary

AU - Furuya, Ray

AU - Gledhill, Tim

AU - Graves, Sarah

AU - Greaves, Jane

AU - Griffin, Matt

AU - Gu, Qilao

AU - Han, Ilseung

AU - Hoang, Thiem

AU - Houde, Martin

AU - Hull, Charles L. H.

AU - Inoue, Tsuyoshi

AU - Inutsuka, Shu-ichiro

AU - Iwasaki, Kazunari

AU - Jeong, Il-Gyo

AU - Johnstone, Doug

AU - Könyves, Vera

AU - Kang, Ji-hyun

AU - Kang, Miju

AU - Kataoka, Akimasa

AU - Kawabata, Koji

AU - Kemper, Francisca

AU - Kim, Jongsoo

AU - Kim, Shinyoung

AU - Kim, Gwanjeong

AU - Kim, Kyoung Hee

AU - Kim, Mi-Ryang

AU - Kim, Kee-Tae

AU - Kim, Hyosung

AU - Kirchschlager, Florian

AU - Kobayashi, Masato I. N.

AU - Koch, Patrick M.

AU - Kusune, Takayoshi

AU - Kwon, Jungmi

AU - Lacaille, Kevin

AU - Law, Chi-Yan

AU - Lee, Chang Won

AU - Lee, Hyeseung

AU - Lee, Yong-Hee

AU - Lee, Chin-Fei

AU - Lee, Jeong-Eun

AU - Lee, Sang-Sung

AU - Li, Dalei

AU - Li, Di

AU - Li, Guangxing

AU - Li, Hua-bai

AU - Lin, Sheng-Jun

AU - Liu, Hong-Li

AU - Liu, Tie

AU - Liu, Sheng-Yuan

AU - Liu, Junhao

AU - Longmore, Steven

AU - Lu, Xing

AU - Lyo, A-Ran

AU - Mairs, Steve

AU - Matsumura, Masafumi

AU - Matthews, Brenda

AU - Moriarty-Schieven, Gerald

AU - Nagata, Tetsuya

AU - Nakamura, Fumitaka

AU - Nakanishi, Hiroyuki

AU - Ngoc, Nguyen Bich

AU - Ohashi, Nagayoshi

AU - Onaka, Takashi

AU - Park, Geumsook

AU - Parsons, Harriet

AU - Peretto, Nicolas

AU - Priestley, Felix

AU - Pyo, Tae-Soo

AU - Qian, Lei

AU - Rao, Ramprasad

AU - Rawlings, Jonathan

AU - Rawlings, Mark

AU - Retter, Brendan

AU - Richer, John

AU - Rigby, Andrew

AU - Sadavoy, Sarah

AU - Saito, Hiro

AU - Savini, Giorgio

AU - Seta, Masumichi

AU - Sharma, Ekta

AU - Shimajiri, Yoshito

AU - Shinnaga, Hiroko

AU - Tahani, Mehrnoosh

AU - Tamura, Motohide

AU - Tang, Ya-Wen

AU - Tang, Xindi

AU - Tomisaka, Kohji

AU - Tram, Le Ngoc

AU - Tsukamoto, Yusuke

AU - Viti, Serena

AU - Wang, Hongchi

AU - Wu, Jintai

AU - Xie, Jinjin

AU - Yang, Meng-Zhe

AU - Yen, Hsi-Wei

AU - Yoo, Hyunju

AU - Yuan, Jinghua

AU - Yun, Hyeong-Sik

AU - Zenko, Tetsuya

AU - Zhang, Guoyin

AU - Zhang, Yapeng

AU - Zhang, Chuan-Peng

AU - Zhou, Jianjun

AU - Zhu, Lei

AU - de Looze, Ilse

AU - André, Philippe

AU - Dowell, C. Darren

AU - Eden, David

AU - Eyres, Stewart

AU - Falle, Sam

AU - Le Gouellec, Valentin J. M.

AU - Poidevin, Frédérick

AU - Robitaille, Jean-François

AU - van Loo, Sven

PY - 2023/7/14

Y1 - 2023/7/14

N2 - 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 submillimeter-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 subcritical values, respectively, and both are found to be roughly trans-Alfvénic. We also present a new method of data reduction for these denser but fainter objects like starless cores.

AB - 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 submillimeter-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 subcritical values, respectively, and both are found to be roughly trans-Alfvénic. We also present a new method of data reduction for these denser but fainter objects like starless cores.

KW - Dust continuum emission

KW - Stellar-interstellar interactions

KW - Starlight polarization

KW - Young stellar objects

KW - Molecular clouds

KW - Interstellar magnetic fields

UR - http://www.scopus.com/inward/record.url?scp=85165398068&partnerID=8YFLogxK

U2 - 10.3847/1538-4357/acd6f2

DO - 10.3847/1538-4357/acd6f2

M3 - Article

SN - 0004-637X

VL - 952

SP - 1

EP - 18

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 1

M1 - 29

ER -

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

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