A Tale of Three: Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey

Jintai Wu; Keping Qiu; Frédérick Poidevin; Pierre Bastien; Junhao Liu; Tao Chung Ching; Tyler L. Bourke; Derek Ward-Thompson; Kate Pattle; Doug Johnstone; Patrick M. Koch; Doris Arzoumanian; Chang Won Lee; Lapo Fanciullo; Takashi Onaka; Jihye Hwang; Valentin J.M. Le Gouellec; Archana Soam; Motohide Tamura; Mehrnoosh Tahani; Chakali Eswaraiah; Hua Bai Li; David Berry; Ray S. Furuya; Simon Coudé; Woojin Kwon; Sheng Jun Lin; Jia Wei Wang; Tetsuo Hasegawa; Shih Ping Lai; Do Young Byun; Zhiwei Chen; Huei Ru Vivien Chen; Wen Ping Chen; Mike Chen; Jungyeon Cho; Youngwoo Choi; Yunhee Choi; Minho Choi; Antonio Chrysostomou; Eun Jung Chung; Sophia Dai; James Di Francesco; Pham Ngoc Diep; Yasuo Doi; Hao Yuan Duan; Yan Duan; David Eden; Jason Fiege; Laura M. Fissel; Erica Franzmann; Per Friberg; Rachel Friesen; Gary Fuller; Tim Gledhill; Sarah Graves; Jane Greaves; Matt Griffin; Qilao Gu; Ilseung Han; Saeko Hayashi; Thiem Hoang; Martin Houde; Tsuyoshi Inoue; Shu Ichiro Inutsuka; Kazunari Iwasaki; Il Gyo Jeong; Vera Könyves; Ji Hyun Kang; Miju Kang; Janik Karoly; Akimasa Kataoka; Koji Kawabata; Shinyoung Kim; Mi Ryang Kim; Kyoung Hee Kim; Kee Tae Kim; Jongsoo Kim; Hyosung Kim; Gwanjeong Kim; Florian Kirchschlager; Jason Kirk; Masato I.N. Kobayashi; Takayoshi Kusune; Jungmi Kwon; Kevin Lacaille; Chi Yan Law; Hyeseung Lee; Chin Fei Lee; Sang Sung Lee; Jeong Eun Lee; Dalei Li; Di Li; Guangxing Li; Sheng Yuan Liu; Tie Liu; Hong Li Liu; 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; 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; Ya Wen Tang; Xindi Tang; Hoang Duc Thuong; Kohji Tomisaka; Le Ngoc Tram; Yusuke Tsukamoto; Serena Viti; Hongchi Wang; Anthony Whitworth; Jinjin Xie; Meng Zhe Yang; Hsi Wei Yen; Hyunju Yoo; Jinghua Yuan; Hyeong Sik Yun; Tetsuya Zenko; Guoyin Zhang; Chuan Peng Zhang; Yapeng Zhang; Jianjun Zhou; Lei Zhu; Ilse de Looze; Philippe André; C. Darren Dowell; Stewart Eyres; Sam Falle; Jean François Robitaille; Sven van Loo

doi:10.3847/2041-8213/ad93d2

A Tale of Three: Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey

Jintai Wu, Keping Qiu, Frédérick Poidevin, Pierre Bastien, Junhao Liu, Tao Chung Ching, Tyler L. Bourke, Derek Ward-Thompson, Kate Pattle, Doug Johnstone, Patrick M. Koch, Doris Arzoumanian, Chang Won Lee, Lapo Fanciullo, Takashi Onaka, Jihye Hwang, Valentin J.M. Le Gouellec, Archana Soam, Motohide Tamura, Mehrnoosh TahaniChakali Eswaraiah, Hua Bai Li, David Berry, Ray S. Furuya, Simon Coudé, Woojin Kwon, Sheng Jun Lin, Jia Wei Wang, Tetsuo Hasegawa, Shih Ping Lai, Do Young Byun, Zhiwei Chen, Huei Ru Vivien Chen, Wen Ping Chen, Mike Chen, Jungyeon Cho, Youngwoo Choi, Yunhee Choi, Minho Choi, Antonio Chrysostomou, Eun Jung Chung, Sophia Dai, James Di Francesco, Pham Ngoc Diep, Yasuo Doi, Hao Yuan Duan, Yan Duan, David Eden, Jason Fiege, Laura M. Fissel, Erica Franzmann, Per Friberg, Rachel Friesen, Gary Fuller, Tim Gledhill, Sarah Graves, Jane Greaves, Matt Griffin, Qilao Gu, Ilseung Han, Saeko Hayashi, Thiem Hoang, Martin Houde, Tsuyoshi Inoue, Shu Ichiro Inutsuka, Kazunari Iwasaki, Il Gyo Jeong, Vera Könyves, Ji Hyun Kang, Miju Kang, Janik Karoly, Akimasa Kataoka, Koji Kawabata, Shinyoung Kim, Mi Ryang Kim, Kyoung Hee Kim, Kee Tae Kim, Jongsoo Kim, Hyosung Kim, Gwanjeong Kim, Florian Kirchschlager, Jason Kirk, Masato I.N. Kobayashi, Takayoshi Kusune, Jungmi Kwon, Kevin Lacaille, Chi Yan Law, Hyeseung Lee, Chin Fei Lee, Sang Sung Lee, Jeong Eun Lee, Dalei Li, Di Li, Guangxing Li, Sheng Yuan Liu, Tie Liu, Hong Li Liu, 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, 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, Ya Wen Tang, Xindi Tang, Hoang Duc Thuong, Kohji Tomisaka, Le Ngoc Tram, Yusuke Tsukamoto, Serena Viti, Hongchi Wang, Anthony Whitworth, Jinjin Xie, Meng Zhe Yang, Hsi Wei Yen, Hyunju Yoo, Jinghua Yuan, Hyeong Sik Yun, Tetsuya Zenko, Guoyin Zhang, Chuan Peng Zhang, Yapeng Zhang, Jianjun Zhou, Lei Zhu, Ilse de Looze, Philippe André, C. Darren Dowell, Stewart Eyres, Sam Falle, Jean François Robitaille, Sven van Loo

Research output: Contribution to a Journal (Peer & Non Peer) › Article › peer-review

Abstract

As part of the B-fields In Star-forming Region Observations survey, we present James Clerk Maxwell Telescope (JCMT) 850 μm polarimetric observations toward the Orion integral-shaped filament (ISF) that covers three portions known as OMC-1, OMC-2, and OMC-3. The magnetic field threading the ISF seen in the JCMT POL-2 map appears as a tale of three: pinched for OMC-1, twisted for OMC-2, and nearly uniform for OMC-3. A multiscale analysis shows that the magnetic field structure in OMC-3 is very consistent at all the scales, whereas the field structure in OMC-2 shows no correlation across different scales. In OMC-1, the field retains its mean orientation from large to small scales but shows some deviations at small scales. Histograms of relative orientations between the magnetic field and filaments reveal a bimodal distribution for OMC-1, a relatively random distribution for OMC-2, and a distribution with a predominant peak at 90^o for OMC-3. Furthermore, the magnetic fields in OMC-1 and OMC-3 both appear to be aligned perpendicular to the fibers, which are denser structures within the filament, but the field in OMC-2 is aligned along with the fibers. All these suggest that gravity, turbulence, and magnetic field are each playing a leading role in OMC-1, 2, and 3, respectively. While OMC-2 and 3 have almost the same gas mass, density, and nonthermal velocity dispersion, there are on average younger and fewer young stellar objects in OMC-3, providing evidence that a stronger magnetic field will induce slower and less efficient star formation in molecular clouds.

Original language	English
Journal	Astrophysical Journal Letters
Volume	977
Issue number	2
DOIs	https://doi.org/10.3847/2041-8213/ad93d2
Publication status	Published - 20 Dec 2024
Externally published	Yes

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10.3847/2041-8213/ad93d2

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Wu, J., Qiu, K., Poidevin, F., Bastien, P., Liu, J., Ching, T. C., Bourke, T. L., Ward-Thompson, D., Pattle, K., Johnstone, D., Koch, P. M., Arzoumanian, D., Lee, C. W., Fanciullo, L., Onaka, T., Hwang, J., Le Gouellec, V. J. M., Soam, A., Tamura, M., ... van Loo, S. (2024). A Tale of Three: Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey. Astrophysical Journal Letters, 977(2). https://doi.org/10.3847/2041-8213/ad93d2

@article{c7929ca2522f48ffab328c600d78f46d,

title = "A Tale of Three: Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey",

abstract = "As part of the B-fields In Star-forming Region Observations survey, we present James Clerk Maxwell Telescope (JCMT) 850 μm polarimetric observations toward the Orion integral-shaped filament (ISF) that covers three portions known as OMC-1, OMC-2, and OMC-3. The magnetic field threading the ISF seen in the JCMT POL-2 map appears as a tale of three: pinched for OMC-1, twisted for OMC-2, and nearly uniform for OMC-3. A multiscale analysis shows that the magnetic field structure in OMC-3 is very consistent at all the scales, whereas the field structure in OMC-2 shows no correlation across different scales. In OMC-1, the field retains its mean orientation from large to small scales but shows some deviations at small scales. Histograms of relative orientations between the magnetic field and filaments reveal a bimodal distribution for OMC-1, a relatively random distribution for OMC-2, and a distribution with a predominant peak at 90o for OMC-3. Furthermore, the magnetic fields in OMC-1 and OMC-3 both appear to be aligned perpendicular to the fibers, which are denser structures within the filament, but the field in OMC-2 is aligned along with the fibers. All these suggest that gravity, turbulence, and magnetic field are each playing a leading role in OMC-1, 2, and 3, respectively. While OMC-2 and 3 have almost the same gas mass, density, and nonthermal velocity dispersion, there are on average younger and fewer young stellar objects in OMC-3, providing evidence that a stronger magnetic field will induce slower and less efficient star formation in molecular clouds.",

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

note = "Publisher Copyright: {\textcopyright} 2024. The Author(s). Published by the American Astronomical Society.",

year = "2024",

month = dec,

day = "20",

doi = "10.3847/2041-8213/ad93d2",

language = "English",

volume = "977",

journal = "Astrophysical Journal Letters",

issn = "2041-8205",

number = "2",

}

Wu, J, Qiu, K, Poidevin, F, Bastien, P, Liu, J, Ching, TC, Bourke, TL, Ward-Thompson, D, Pattle, K, Johnstone, D, Koch, PM, Arzoumanian, D, Lee, CW, Fanciullo, L, Onaka, T, Hwang, J, Le Gouellec, VJM, Soam, A, Tamura, M, Tahani, M, Eswaraiah, C, Li, HB, Berry, D, Furuya, RS, Coudé, S, Kwon, W, Lin, SJ, Wang, JW, Hasegawa, T, Lai, SP, Byun, DY, Chen, Z, Chen, HRV, Chen, WP, Chen, M, Cho, J, Choi, Y, Choi, Y, Choi, M, Chrysostomou, A, Chung, EJ, Dai, S, Di Francesco, J, Diep, PN, Doi, Y, Duan, HY, Duan, Y, Eden, D, Fiege, J, Fissel, LM, Franzmann, E, Friberg, P, Friesen, R, Fuller, G, Gledhill, T, Graves, S, Greaves, J, Griffin, M, Gu, Q, Han, I, Hayashi, S, Hoang, T, Houde, M, Inoue, T, Inutsuka, SI, Iwasaki, K, Jeong, IG, Könyves, V, Kang, JH, Kang, M, Karoly, J, Kataoka, A, Kawabata, K, Kim, S, Kim, MR, Kim, KH, Kim, KT, Kim, J, Kim, H, Kim, G, Kirchschlager, F, Kirk, J, Kobayashi, MIN, Kusune, T, Kwon, J, Lacaille, K, Law, CY, Lee, H, Lee, CF, Lee, SS, Lee, JE, Li, D, Li, D, Li, G, Liu, SY, Liu, T, Liu, HL, Lu, X, Lyo, AR, Mairs, S, Matsumura, M, Matthews, B, Moriarty-Schieven, G, Nagata, T, Nakamura, F, Nakanishi, H, Ngoc, NB, Ohashi, N, Park, G, Parsons, H, Peretto, N, Priestley, F, Pyo, TS, 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, Tang, YW, Tang, X, Thuong, HD, Tomisaka, K, Tram, LN, Tsukamoto, Y, Viti, S, Wang, H, Whitworth, A, Xie, J, Yang, MZ, Yen, HW, Yoo, H, Yuan, J, Yun, HS, Zenko, T, Zhang, G, Zhang, CP, Zhang, Y, Zhou, J, Zhu, L, de Looze, I, André, P, Dowell, CD, Eyres, S, Falle, S, Robitaille, JF & van Loo, S 2024, 'A Tale of Three: Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey', Astrophysical Journal Letters, vol. 977, no. 2. https://doi.org/10.3847/2041-8213/ad93d2

TY - JOUR

T1 - A Tale of Three

T2 - Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey

AU - Wu, Jintai

AU - Qiu, Keping

AU - Poidevin, Frédérick

AU - Bastien, Pierre

AU - Liu, Junhao

AU - Ching, Tao Chung

AU - Bourke, Tyler L.

AU - Ward-Thompson, Derek

AU - Pattle, Kate

AU - Johnstone, Doug

AU - Koch, Patrick M.

AU - Arzoumanian, Doris

AU - Lee, Chang Won

AU - Fanciullo, Lapo

AU - Onaka, Takashi

AU - Hwang, Jihye

AU - Le Gouellec, Valentin J.M.

AU - Soam, Archana

AU - Tamura, Motohide

AU - Tahani, Mehrnoosh

AU - Eswaraiah, Chakali

AU - Li, Hua Bai

AU - Berry, David

AU - Furuya, Ray S.

AU - Coudé, Simon

AU - Kwon, Woojin

AU - Lin, Sheng Jun

AU - Wang, Jia Wei

AU - Hasegawa, Tetsuo

AU - Lai, Shih Ping

AU - Byun, Do Young

AU - Chen, Zhiwei

AU - Chen, Huei Ru Vivien

AU - Chen, Wen Ping

AU - Chen, Mike

AU - Cho, Jungyeon

AU - Choi, Youngwoo

AU - Choi, Yunhee

AU - Choi, Minho

AU - Chrysostomou, Antonio

AU - Chung, Eun Jung

AU - Dai, Sophia

AU - Di Francesco, James

AU - Diep, Pham Ngoc

AU - Doi, Yasuo

AU - Duan, Hao Yuan

AU - Duan, Yan

AU - Eden, David

AU - Fiege, Jason

AU - Fissel, Laura M.

AU - Franzmann, Erica

AU - Friberg, Per

AU - Friesen, Rachel

AU - Fuller, Gary

AU - Gledhill, Tim

AU - Graves, Sarah

AU - Greaves, Jane

AU - Griffin, Matt

AU - Gu, Qilao

AU - Han, Ilseung

AU - Hayashi, Saeko

AU - Hoang, Thiem

AU - Houde, Martin

AU - Inoue, Tsuyoshi

AU - Inutsuka, Shu Ichiro

AU - Iwasaki, Kazunari

AU - Jeong, Il Gyo

AU - Könyves, Vera

AU - Kang, Ji Hyun

AU - Kang, Miju

AU - Karoly, Janik

AU - Kataoka, Akimasa

AU - Kawabata, Koji

AU - Kim, Shinyoung

AU - Kim, Mi Ryang

AU - Kim, Kyoung Hee

AU - Kim, Kee Tae

AU - Kim, Jongsoo

AU - Kim, Hyosung

AU - Kim, Gwanjeong

AU - Kirchschlager, Florian

AU - Kirk, Jason

AU - Kobayashi, Masato I.N.

AU - Kusune, Takayoshi

AU - Kwon, Jungmi

AU - Lacaille, Kevin

AU - Law, Chi Yan

AU - Lee, Hyeseung

AU - Lee, Chin Fei

AU - Lee, Sang Sung

AU - Lee, Jeong Eun

AU - Li, Dalei

AU - Li, Di

AU - Li, Guangxing

AU - Liu, Sheng Yuan

AU - Liu, Tie

AU - Liu, Hong Li

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 - 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 - Tang, Ya Wen

AU - Tang, Xindi

AU - Thuong, Hoang Duc

AU - Tomisaka, Kohji

AU - Tram, Le Ngoc

AU - Tsukamoto, Yusuke

AU - Viti, Serena

AU - Wang, Hongchi

AU - Whitworth, Anthony

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, Chuan Peng

AU - Zhang, Yapeng

AU - Zhou, Jianjun

AU - Zhu, Lei

AU - de Looze, Ilse

AU - André, Philippe

AU - Dowell, C. Darren

AU - Eyres, Stewart

AU - Falle, Sam

AU - Robitaille, Jean François

AU - van Loo, Sven

PY - 2024/12/20

Y1 - 2024/12/20

N2 - As part of the B-fields In Star-forming Region Observations survey, we present James Clerk Maxwell Telescope (JCMT) 850 μm polarimetric observations toward the Orion integral-shaped filament (ISF) that covers three portions known as OMC-1, OMC-2, and OMC-3. The magnetic field threading the ISF seen in the JCMT POL-2 map appears as a tale of three: pinched for OMC-1, twisted for OMC-2, and nearly uniform for OMC-3. A multiscale analysis shows that the magnetic field structure in OMC-3 is very consistent at all the scales, whereas the field structure in OMC-2 shows no correlation across different scales. In OMC-1, the field retains its mean orientation from large to small scales but shows some deviations at small scales. Histograms of relative orientations between the magnetic field and filaments reveal a bimodal distribution for OMC-1, a relatively random distribution for OMC-2, and a distribution with a predominant peak at 90o for OMC-3. Furthermore, the magnetic fields in OMC-1 and OMC-3 both appear to be aligned perpendicular to the fibers, which are denser structures within the filament, but the field in OMC-2 is aligned along with the fibers. All these suggest that gravity, turbulence, and magnetic field are each playing a leading role in OMC-1, 2, and 3, respectively. While OMC-2 and 3 have almost the same gas mass, density, and nonthermal velocity dispersion, there are on average younger and fewer young stellar objects in OMC-3, providing evidence that a stronger magnetic field will induce slower and less efficient star formation in molecular clouds.

AB - As part of the B-fields In Star-forming Region Observations survey, we present James Clerk Maxwell Telescope (JCMT) 850 μm polarimetric observations toward the Orion integral-shaped filament (ISF) that covers three portions known as OMC-1, OMC-2, and OMC-3. The magnetic field threading the ISF seen in the JCMT POL-2 map appears as a tale of three: pinched for OMC-1, twisted for OMC-2, and nearly uniform for OMC-3. A multiscale analysis shows that the magnetic field structure in OMC-3 is very consistent at all the scales, whereas the field structure in OMC-2 shows no correlation across different scales. In OMC-1, the field retains its mean orientation from large to small scales but shows some deviations at small scales. Histograms of relative orientations between the magnetic field and filaments reveal a bimodal distribution for OMC-1, a relatively random distribution for OMC-2, and a distribution with a predominant peak at 90o for OMC-3. Furthermore, the magnetic fields in OMC-1 and OMC-3 both appear to be aligned perpendicular to the fibers, which are denser structures within the filament, but the field in OMC-2 is aligned along with the fibers. All these suggest that gravity, turbulence, and magnetic field are each playing a leading role in OMC-1, 2, and 3, respectively. While OMC-2 and 3 have almost the same gas mass, density, and nonthermal velocity dispersion, there are on average younger and fewer young stellar objects in OMC-3, providing evidence that a stronger magnetic field will induce slower and less efficient star formation in molecular clouds.

UR - http://www.scopus.com/inward/record.url?scp=85213492677&partnerID=8YFLogxK

U2 - 10.3847/2041-8213/ad93d2

DO - 10.3847/2041-8213/ad93d2

M3 - Article

AN - SCOPUS:85213492677

SN - 2041-8205

VL - 977

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 2

ER -

A Tale of Three: Magnetic Fields along the Orion Integral-shaped Filament as Revealed by the JCMT BISTRO Survey

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