The JCMT BISTRO Survey: multiwavelength polarimetry of bright regions in NGC 2071 in the far-infrared/submillimetre range, with POL-2 and HAWC+
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- Lapo Fanciullo
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of AS/NTU Astronomy-Mathematics Building, No.1, Section 4, Roosevelt Rd, Taipei 10617, Taiwan
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- Francisca Kemper
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of AS/NTU Astronomy-Mathematics Building, No.1, Section 4, Roosevelt Rd, Taipei 10617, Taiwan
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- Kate Pattle
- Centre for Astronomy, School of Physics, National University of Ireland Galway, University Road, Galway H91 TK33, Ireland
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- Patrick M Koch
- Academia Sinica Institute of Astronomy and Astrophysics , 11F of AS/NTU Astronomy-Mathematics Building, No.1, Section 4, Roosevelt Rd, Taipei 10617, Taiwan
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- Sarah Sadavoy
- Department for Physics, Engineering Physics and Astrophysics, Queen’s University , Kingston ON K7L 3N6, Canada
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- Simon Coudé
- SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center , Moffett Field, CA 94035, USA
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- Archana Soam
- SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center , Moffett Field, CA 94035, USA
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- Thiem Hoang
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
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- Takashi Onaka
- Department of Physics, Faculty of Science and Engineering, Meisei University , 2-1-1 Hodokubo, Hino, Tokyo 191-8506, Japan
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- Valentin J M Le Gouellec
- SOFIA Science Center, Universities Space Research Association, NASA Ames Research Center , Moffett Field, CA 94035, USA
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- Doris Arzoumanian
- Aix Marseille Univ , CNRS, CNES, LAM, Marseille 13388, France
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- David Berry
- East Asian Observatory , 660 N. A’ohōkū Place, University Park, Hilo, HI 96720, USA
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- Chakali Eswaraiah
- CAS Key Laboratory of FAST, National Astronomical Observatories, Chinese Academy of Sciences , 100012 Beijing, China
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- Eun Jung Chung
- Department of Astronomy and Space Science, Chungnam National University , 99 Daehak-ro, Yuseong-gu, Daejeon 34134, Republic of Korea
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- Ray Furuya
- Tokushima University , Minami Jousanajima-machi 1-1, Tokushima 770-8502, Japan
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- Charles L H Hull
- National Astronomical Observatory of Japan , Alonso de Córdova 3788, Office 61B, Vitacura, Santiago, Chile
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- Jihye Hwang
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
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- Douglas Johnstone
- NRC Herzberg Astronomy and Astrophysics , 5071 West Saah Road, Victoria, BC, V9E 2E7, Canada
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- Ji-hyun Kang
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
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- Kyoung Hee Kim
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
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- Florian Kirchschlager
- Department of Physics and Astronomy, University College London , WC1E 6BT London, UK
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- Vera Könyves
- Jeremiah Horrocks Institute, University of Central Lancashire , Preston PR1 2HE, UK
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- Jungmi Kwon
- Department of Astronomy, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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- Woojin Kwon
- Department of Earth Science Education, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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- Shih-Ping Lai
- Institute of Astronomy and Department of Physics, National Tsing Hua University , Hsinchu 30013, Taiwan
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- Chang Won Lee
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
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- Tie Liu
- Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences , 80 Nandan Road, Shanghai 200030, China
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- A-Ran Lyo
- Korea Astronomy and Space Science Institute , 776 Daedeokdae-ro, Yuseong-gu, Daejeon 34055, Republic of Korea
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- Ian Stephens
- Department of Earth, Environment, and Physics, Worcester State University , Worcester, MA 01602, USA
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- Motohide Tamura
- Department of Astronomy, Graduate School of Science, The University of Tokyo , 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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- Xindi Tang
- Xinjiang Astronomical Observatory, Chinese Academy of Sciences , 830011 Urumqi, China
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- Derek Ward-Thompson
- Jeremiah Horrocks Institute, University of Central Lancashire , Preston PR1 2HE, UK
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- Anthony Whitworth
- School of Physics and Astronomy, Cardiff University , The Parade, Cardiff CF24 3AA, UK
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- Hiroko Shinnaga
- Department of Physics and Astronomy, Graduate School of Science and Engineering, Kagoshima University , 1-21-35 Korimoto, Kagoshima, Kagoshima 890-0065, Japan
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Description
<jats:title>ABSTRACT</jats:title><jats:p>Polarized dust emission is a key tracer in the study of interstellar medium and of star formation. The observed polarization, however, is a product of magnetic field structure, dust grain properties, and grain alignment efficiency, as well as their variations in the line of sight, making it difficult to interpret polarization unambiguously. The comparison of polarimetry at multiple wavelengths is a possible way of mitigating this problem. We use data from HAWC+ /SOFIA and from SCUBA-2/POL-2 (from the BISTRO survey) to analyse the NGC 2071 molecular cloud at 154, 214, and 850 $\mu$m. The polarization angle changes significantly with wavelength over part of NGC 2071, suggesting a change in magnetic field morphology on the line of sight as each wavelength best traces different dust populations. Other possible explanations are the existence of more than one polarization mechanism in the cloud or scattering from very large grains. The observed change of polarization fraction with wavelength, and the 214-to-154 $\mu$m polarization ratio in particular, are difficult to reproduce with current dust models under the assumption of uniform alignment efficiency. We also show that the standard procedure of using monochromatic intensity as a proxy for column density may produce spurious results at HAWC+wavelengths. Using both long-wavelength (POL-2, 850 $\mu$m) and short-wavelength (HAWC+, $\lesssim 200\, \mu$m) polarimetry is key in obtaining these results. This study clearly shows the importance of multi-wavelength polarimetry at submillimetre bands to understand the dust properties of molecular clouds and the relationship between magnetic field and star formation.</jats:p>
Journal
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- Monthly Notices of the Royal Astronomical Society
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Monthly Notices of the Royal Astronomical Society 512 (2), 1985-2002, 2022-03-08
Oxford University Press (OUP)
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Details 詳細情報について
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- CRID
- 1360576226207253760
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- ISSN
- 13652966
- 00358711
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- Article Type
- journal article
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- Data Source
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- Crossref
- KAKEN
- OpenAIRE
