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The JCMT BISTRO survey : an 850/450 μm polarization study of NGC 2071IR in Orion B

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Abstract
We present the results of simultaneous 450 mu m and 850 mu m polarization observations toward the massive star-forming region NGC 2071IR, a target of the BISTRO (B-fields in STar-forming Region Observations) Survey, using the POL-2 polarimeter and SCUBA-2 camera mounted on the James Clerk Maxwell Telescope. We find a pinched magnetic field morphology in the central dense core region, which could be due to a rotating toroidal disklike structure and a bipolar outflow originating from the central young stellar object IRS 3. Using the modified Davis-Chandrasekhar-Fermi method, we obtain a plane-of-sky magnetic field strength of 563 +/- 421 mu G in the central similar to 0.12 pc region from 850 mu m polarization data. The corresponding magnetic energy density of 2.04 x 10(-8) erg cm(-3) is comparable to the turbulent and gravitational energy densities in the region. We find that the magnetic field direction is very well aligned with the whole of the IRS 3 bipolar outflow structure. We find that the median value of polarization fractions is 3.0% at 450 mu m in the central 3 ' region, which is larger than the median value of 1.2% at 850 mu m. The trend could be due to the better alignment of warmer dust in the strong radiation environment. We also find that polarization fractions decrease with intensity at both wavelengths, with slopes, determined by fitting a Rician noise model of 0.59 +/- 0.03 at 450 mu m and 0.36 +/- 0.04 at 850 mu m, respectively. We think that the shallow slope at 850 mu m is due to grain alignment at the center being assisted by strong radiation from the central young stellar objects.
Keywords
FAR-INFRARED POLARIZATION, FORMING MOLECULAR CLOUDS, GOULD BELT SURVEY, MAGNETIC-FIELDS, SUBMILLIMETER POLARIZATION, IMAGING POLARIMETRY, BIPOLAR OUTFLOW, STAR-FORMATION, SCUBA-2, CORES, Star-forming regions, Interstellar magnetic fields, Interstellar medium, Polarimetry, 1565, 845, 847, 1278, Astrophysics - Astrophysics of Galaxies

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MLA
Lyo, A. Ran, et al. “The JCMT BISTRO Survey : An 850/450 Μm Polarization Study of NGC 2071IR in Orion B.” ASTROPHYSICAL JOURNAL, vol. 918, no. 2, 2021, doi:10.3847/1538-4357/ac0ce9.
APA
Lyo, A.-R., Kim, J., Sadavoy, S., Johnstone, D., Berry, D., Pattle, K., … van Loo, S. (2021). The JCMT BISTRO survey : an 850/450 μm polarization study of NGC 2071IR in Orion B. ASTROPHYSICAL JOURNAL, 918(2). https://doi.org/10.3847/1538-4357/ac0ce9
Chicago author-date
Lyo, A-Ran, Jongsoo Kim, Sarah Sadavoy, Doug Johnstone, David Berry, Kate Pattle, Woojin Kwon, et al. 2021. “The JCMT BISTRO Survey : An 850/450 Μm Polarization Study of NGC 2071IR in Orion B.” ASTROPHYSICAL JOURNAL 918 (2). https://doi.org/10.3847/1538-4357/ac0ce9.
Chicago author-date (all authors)
Lyo, A-Ran, Jongsoo Kim, Sarah Sadavoy, Doug Johnstone, David Berry, Kate Pattle, Woojin Kwon, Pierre Bastien, Takashi Onaka, James Di Francesco, Ji-Hyun Kang, Ray Furuya, Charles L. H. Hull, Motohide Tamura, Patrick M. Koch, Derek Ward-Thompson, Tetsuo Hasegawa, Thiem Hoang, Doris Arzoumanian, Chang Won Lee, Chin-Fei Lee, Do-Young Byun, Florian Kirchschlager, Yasuo Doi, Kee-Tae Kim, Jihye Hwang, [missing] Pham Ngoc Diep, Lapo Fanciullo, Sang-Sung Lee, Geumsook Park, Hyunju Yoo, Eun Jung Chung, Anthony Whitworth, Steve Mairs, Archana Soam, Tie Liu, Xindi Tang, Simon Coude, Philippe Andre, Tyler L. Bourke, Huei-Ru Vivien Chen, Zhiwei Chen, Wen Ping Chen, Mike Chen, Tao-Chung Ching, Jungyeon Cho, Minho Choi, Yunhee Choi, Antonio Chrysostomou, Sophia Dai, C. Darren Dowell, Hao-Yuan Duan, Yan Duan, David Eden, Chakali Eswaraiah, Stewart Eyres, 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, Jannifer Hatchell, Saeko Hayashi, Martin Houde, Tsuyoshi Inoue, Shu-ichiro Inutsuka, Kazunari Iwasaki, Il-Gyo Jeong, Miju Kang, Akimasa Kataoka, Koji Kawabata, Francisca Kemper, Gwanjeong Kim, Mi-Ryang Kim, Shinyoung Kim, Kyoung Hee Kim, Jason Kirk, Masato I. N. Kobayashi, Vera Konyves, Takayoshi Kusune, Jungmi Kwon, Kevin Lacaille, Shih-Ping Lai, Chi-Yan Law, Jeong-Eun Lee, Yong-Hee Lee, Hyeseung Lee, Dalei Li, Di Li, Hua-Bai Li, Hong-Li Liu, Junhao Liu, Sheng-Yuan Liu, Xing Lu, Masafumi Matsumura, Brenda Matthews, Gerald Moriarty-Schieven, Tetsuya Nagata, Fumitaka Nakamura, Hiroyuki Nakanishi, Nguyen Bich Ngoc, Nagayoshi Ohashi, Harriet Parsons, Nicolas Peretto, Felix Priestley, Tae-soo Pyo, Lei Qian, Keping Qiu, Ramprasad Rao, Jonathan Rawlings, Mark G. Rawlings, Brendan Retter, John Richer, Andrew Rigby, Hiro Saito, Giorgio Savini, Anna Scaife, Masumichi Seta, Yoshito Shimajiri, Hiroko Shinnaga, Mehrnoosh Tahani, Ya-Wen Tang, Kohji Tomisaka, [missing] Le Ngoc Tram, Yusuke Tsukamoto, Serena Viti, Jia-Wei Wang, Hongchi Wang, Jinjin Xie, Hsi-Wei Yen, Jinghua Yuan, Hyeong-Sik Yun, Tetsuya Zenko, Guoyin Zhang, Chuan-Peng Zhang, Yapeng Zhang, Jianjun Zhou, Lei Zhu, Ilse De Looze, C. Darren Dowell, Sam Falle, Jean-Francois Robitaille, and Sven van Loo. 2021. “The JCMT BISTRO Survey : An 850/450 Μm Polarization Study of NGC 2071IR in Orion B.” ASTROPHYSICAL JOURNAL 918 (2). doi:10.3847/1538-4357/ac0ce9.
Vancouver
1.
Lyo A-R, Kim J, Sadavoy S, Johnstone D, Berry D, Pattle K, et al. The JCMT BISTRO survey : an 850/450 μm polarization study of NGC 2071IR in Orion B. ASTROPHYSICAL JOURNAL. 2021;918(2).
IEEE
[1]
A.-R. Lyo et al., “The JCMT BISTRO survey : an 850/450 μm polarization study of NGC 2071IR in Orion B,” ASTROPHYSICAL JOURNAL, vol. 918, no. 2, 2021.
@article{01JXCFFPHMMQFQX9YNSH8T99KY,
  abstract     = {{We present the results of simultaneous 450 mu m and 850 mu m polarization observations toward the massive star-forming region NGC 2071IR, a target of the BISTRO (B-fields in STar-forming Region Observations) Survey, using the POL-2 polarimeter and SCUBA-2 camera mounted on the James Clerk Maxwell Telescope. We find a pinched magnetic field morphology in the central dense core region, which could be due to a rotating toroidal disklike structure and a bipolar outflow originating from the central young stellar object IRS 3. Using the modified Davis-Chandrasekhar-Fermi method, we obtain a plane-of-sky magnetic field strength of 563 +/- 421 mu G in the central similar to 0.12 pc region from 850 mu m polarization data. The corresponding magnetic energy density of 2.04 x 10(-8) erg cm(-3) is comparable to the turbulent and gravitational energy densities in the region. We find that the magnetic field direction is very well aligned with the whole of the IRS 3 bipolar outflow structure. We find that the median value of polarization fractions is 3.0% at 450 mu m in the central 3 ' region, which is larger than the median value of 1.2% at 850 mu m. The trend could be due to the better alignment of warmer dust in the strong radiation environment. We also find that polarization fractions decrease with intensity at both wavelengths, with slopes, determined by fitting a Rician noise model of 0.59 +/- 0.03 at 450 mu m and 0.36 +/- 0.04 at 850 mu m, respectively. We think that the shallow slope at 850 mu m is due to grain alignment at the center being assisted by strong radiation from the central young stellar objects.}},
  articleno    = {{85}},
  author       = {{Lyo, A-Ran and Kim, Jongsoo and Sadavoy, Sarah and Johnstone, Doug and Berry, David and Pattle, Kate and Kwon, Woojin and Bastien, Pierre and Onaka, Takashi and Di Francesco, James and Kang, Ji-Hyun and Furuya, Ray and Hull, Charles L. H. and Tamura, Motohide and Koch, Patrick M. and Ward-Thompson, Derek and Hasegawa, Tetsuo and Hoang, Thiem and Arzoumanian, Doris and Lee, Chang Won and Lee, Chin-Fei and Byun, Do-Young and Kirchschlager, Florian and Doi, Yasuo and Kim, Kee-Tae and Hwang, Jihye and Pham Ngoc Diep, [missing] and Fanciullo, Lapo and Lee, Sang-Sung and Park, Geumsook and Yoo, Hyunju and Chung, Eun Jung and Whitworth, Anthony and Mairs, Steve and Soam, Archana and Liu, Tie and Tang, Xindi and Coude, Simon and Andre, Philippe and Bourke, Tyler L. and Chen, Huei-Ru Vivien and Chen, Zhiwei and Chen, Wen Ping and Chen, Mike and Ching, Tao-Chung and Cho, Jungyeon and Choi, Minho and Choi, Yunhee and Chrysostomou, Antonio and Dai, Sophia and Dowell, C. Darren and Duan, Hao-Yuan and Duan, Yan and Eden, David and Eswaraiah, Chakali and Eyres, Stewart and Fiege, Jason and Fissel, Laura M. and Franzmann, Erica and Friberg, Per and Friesen, Rachel and Fuller, Gary and Gledhill, Tim and Graves, Sarah and Greaves, Jane and Griffin, Matt and Gu, Qilao and Han, Ilseung and Hatchell, Jannifer and Hayashi, Saeko and Houde, Martin and Inoue, Tsuyoshi and Inutsuka, Shu-ichiro and Iwasaki, Kazunari and Jeong, Il-Gyo and Kang, Miju and Kataoka, Akimasa and Kawabata, Koji and Kemper, Francisca and Kim, Gwanjeong and Kim, Mi-Ryang and Kim, Shinyoung and Kim, Kyoung Hee and Kirk, Jason and Kobayashi, Masato I. N. and Konyves, Vera and Kusune, Takayoshi and Kwon, Jungmi and Lacaille, Kevin and Lai, Shih-Ping and Law, Chi-Yan and Lee, Jeong-Eun and Lee, Yong-Hee and Lee, Hyeseung and Li, Dalei and Li, Di and Li, Hua-Bai and Liu, Hong-Li and Liu, Junhao and Liu, Sheng-Yuan and Lu, Xing and Matsumura, Masafumi and Matthews, Brenda and Moriarty-Schieven, Gerald and Nagata, Tetsuya and Nakamura, Fumitaka and Nakanishi, Hiroyuki and Ngoc, Nguyen Bich and Ohashi, Nagayoshi and Parsons, Harriet and Peretto, Nicolas and Priestley, Felix and Pyo, Tae-soo and Qian, Lei and Qiu, Keping and Rao, Ramprasad and Rawlings, Jonathan and Rawlings, Mark G. and Retter, Brendan and Richer, John and Rigby, Andrew and Saito, Hiro and Savini, Giorgio and Scaife, Anna and Seta, Masumichi and Shimajiri, Yoshito and Shinnaga, Hiroko and Tahani, Mehrnoosh and Tang, Ya-Wen and Tomisaka, Kohji and Le Ngoc Tram, [missing] and Tsukamoto, Yusuke and Viti, Serena and Wang, Jia-Wei and Wang, Hongchi and Xie, Jinjin and Yen, Hsi-Wei and Yuan, Jinghua and Yun, Hyeong-Sik and Zenko, Tetsuya and Zhang, Guoyin and Zhang, Chuan-Peng and Zhang, Yapeng and Zhou, Jianjun and Zhu, Lei and De Looze, Ilse and Dowell, C. Darren and Falle, Sam and Robitaille, Jean-Francois and van Loo, Sven}},
  issn         = {{0004-637X}},
  journal      = {{ASTROPHYSICAL JOURNAL}},
  keywords     = {{FAR-INFRARED POLARIZATION,FORMING MOLECULAR CLOUDS,GOULD BELT SURVEY,MAGNETIC-FIELDS,SUBMILLIMETER POLARIZATION,IMAGING POLARIMETRY,BIPOLAR OUTFLOW,STAR-FORMATION,SCUBA-2,CORES,Star-forming regions,Interstellar magnetic fields,Interstellar medium,Polarimetry,1565,845,847,1278,Astrophysics - Astrophysics of Galaxies}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{17}},
  title        = {{The JCMT BISTRO survey : an 850/450 μm polarization study of NGC 2071IR in Orion B}},
  url          = {{http://doi.org/10.3847/1538-4357/ac0ce9}},
  volume       = {{918}},
  year         = {{2021}},
}

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