The JCMT BISTRO Survey: An 850/450 mu m Polarization Study of NGC 2071IR in Orion B
Artikel i vetenskaplig tidskrift, 2021

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.

Författare

A-Ran Lyo

Korea Astronomy and Space Science Institute

Jongsoo Kim

Korea Astronomy and Space Science Institute

University of Science and Technology (UST)

Sarah Sadavoy

Queen's University

Doug Johnstone

National Research Council Canada

University of Victoria

David Berry

East Asian Observatory

Kate Pattle

National University of Ireland Galway

Woojin Kwon

Seoul National University

Pierre Bastien

Université de Montréal

Takashi Onaka

Meisei University

University of Tokyo

James Di Francesco

National Research Council Canada

University of Victoria

Ji-Hyun Kang

Korea Astronomy and Space Science Institute

Ray Furuya

Tokushima University

Charles L. H. Hull

Atacama Large Millimeter-submillimeter Array (ALMA)

University of Leeds

National Astronomical Observatory of Japan

Motohide Tamura

University of Tokyo

National Institutes of Natural Sciences

Patrick M. Koch

Academia Sinica

Derek Ward-Thompson

University of Central Lancashire

Tetsuo Hasegawa

National Institutes of Natural Sciences

Thiem Hoang

University of Science and Technology (UST)

Korea Astronomy and Space Science Institute

Doris Arzoumanian

Universidade do Porto

Nagoya University

Chang Won Lee

Korea Astronomy and Space Science Institute

University of Science and Technology (UST)

Chin-Fei Lee

Academia Sinica

Do-Young Byun

Korea Astronomy and Space Science Institute

Florian Kirchschlager

University College London (UCL)

Yasuo Doi

University of Tokyo

Kee-Tae Kim

Korea Astronomy and Space Science Institute

University of Science and Technology (UST)

Jihye Hwang

University of Science and Technology (UST)

Korea Astronomy and Space Science Institute

Pham Ngoc Diep

Vietnam Academy of Science and Technology

Lapo Fanciullo

Academia Sinica

Sang-Sung Lee

Korea Astronomy and Space Science Institute

University of Science and Technology (UST)

Geumsook Park

Korea Astronomy and Space Science Institute

Hyunju Yoo

Korea Astronomy and Space Science Institute

Eun Jung Chung

Chungnam National University

Anthony Whitworth

Cardiff University

Steve Mairs

East Asian Observatory

Archana Soam

NASA Ames Research Center

Tie Liu

Chinese Academy of Sciences

Xindi Tang

Chinese Academy of Sciences

Simon Coude

NASA Ames Research Center

Philippe Andre

Université Paris Diderot

Tyler L. Bourke

SKA Organisation

University of Manchester

Huei-Ru Vivien Chen

National Tsing Hua University

Academia Sinica

Zhiwei Chen

Chinese Academy of Sciences

Wen Ping Chen

National Central University

Mike Chen

University of Victoria

Tao-Chung Ching

Chinese Academy of Sciences

Jungyeon Cho

Chungnam National University

Minho Choi

Korea Astronomy and Space Science Institute

Yunhee Choi

Korea Astronomy and Space Science Institute

Antonio Chrysostomou

SKA Organisation

Sophia Dai

Chinese Academy of Sciences

C. Darren Dowell

Jet Propulsion Laboratory, California Institute of Technology

Hao-Yuan Duan

National Tsing Hua University

Yan Duan

Chinese Academy of Sciences

David Eden

Liverpool John Moores University

Chakali Eswaraiah

Chinese Academy of Sciences

Stewart Eyres

University of South Wales

Jason Fiege

University of Manitoba

Laura M. Fissel

Queen's University

Erica Franzmann

University of Manitoba

Per Friberg

East Asian Observatory

Rachel Friesen

National Radio Astronomy Observatory

Gary Fuller

University of Manchester

Tim Gledhill

University of Hertfordshire

Sarah Graves

East Asian Observatory

Jane Greaves

Cardiff University

Matt Griffin

Cardiff University

Qilao Gu

Chinese University of Hong Kong

Ilseung Han

Korea Astronomy and Space Science Institute

University of Science and Technology (UST)

Jannifer Hatchell

University of Exeter

Saeko Hayashi

National Astronomical Observatory of Japan

Martin Houde

Western University

Tsuyoshi Inoue

Nagoya University

Shu-ichiro Inutsuka

Nagoya University

Kazunari Iwasaki

Nagoya University

Il-Gyo Jeong

Doshisha University

Miju Kang

Korea Astronomy and Space Science Institute

Akimasa Kataoka

Kyungpook National University

Koji Kawabata

National Institutes of Natural Sciences

Hiroshima University

Francisca Kemper

Hiroshima University

Academia Sinica

Gwanjeong Kim

European Southern Observatory Santiago

Mi-Ryang Kim

Korea Astronomy and Space Science Institute

Shinyoung Kim

Korea Astronomy and Space Science Institute

University of Science and Technology (UST)

Kyoung Hee Kim

Korea Astronomy and Space Science Institute

Jason Kirk

University of Central Lancashire

Masato I. N. Kobayashi

National Institutes of Natural Sciences

Vera Konyves

University of Central Lancashire

Takayoshi Kusune

National Institutes of Natural Sciences

Jungmi Kwon

University of Tokyo

Kevin Lacaille

McMaster University

Tohoku University

Shih-Ping Lai

Academia Sinica

National Tsing Hua University

Chi Yan Law

Chinese University of Hong Kong

Chalmers, Rymd-, geo- och miljövetenskap, Astronomi och plasmafysik, Extragalaktisk astrofysik

Jeong-Eun Lee

Kyung Hee University

Yong-Hee Lee

Kyung Hee University

Hyeseung Lee

Korea Astronomy and Space Science Institute

Dalei Li

Kyung Hee University

Di Li

Chinese Academy of Sciences

Hua-Bai Li

Chinese University of Hong Kong

Hong-Li Liu

Chinese Academy of Sciences

Junhao Liu

Yunnan University

Nanjing University

Sheng-Yuan Liu

Academia Sinica

Xing Lu

National Institutes of Natural Sciences

Masafumi Matsumura

Nanjing University

Brenda Matthews

University of Victoria

National Research Council Canada

Gerald Moriarty-Schieven

National Research Council Canada

Tetsuya Nagata

Kagawa University

Fumitaka Nakamura

Kyoto University

National Astronomical Observatory of Japan

Hiroyuki Nakanishi

The Graduate University for Advanced Studies (SOKENDAI)

Nguyen Bich Ngoc

Vietnam Academy of Science and Technology

Nagayoshi Ohashi

Academia Sinica

Harriet Parsons

East Asian Observatory

Nicolas Peretto

Cardiff University

Felix Priestley

Cardiff University

Tae-soo Pyo

National Astronomical Observatory of Japan

Lei Qian

Chinese Academy of Sciences

Keping Qiu

Nanjing University

Yunnan University

Ramprasad Rao

Academia Sinica

Jonathan Rawlings

University College London (UCL)

Mark G. Rawlings

East Asian Observatory

Brendan Retter

Cardiff University

John Richer

University of Cambridge

Kagoshima University

Andrew Rigby

Cardiff University

Hiro Saito

University of Cambridge

Giorgio Savini

University of Tsukuba

Anna Scaife

University of Manchester

Masumichi Seta

University College London (UCL)

Yoshito Shimajiri

Kwansei Gakuin University

Hiroko Shinnaga

The Graduate University for Advanced Studies (SOKENDAI)

Mehrnoosh Tahani

National Institutes of Natural Sciences

Ya-Wen Tang

Academia Sinica

Kohji Tomisaka

Kyungpook National University

National Astronomical Observatory of Japan

Le Ngoc Tram

National Research Council Canada

Yusuke Tsukamoto

The Graduate University for Advanced Studies (SOKENDAI)

Serena Viti

Vietnam Academy of Science and Technology

Jia-Wei Wang

Academia Sinica

Hongchi Wang

Chinese Academy of Sciences

Jinjin Xie

Chinese Academy of Sciences

Hsi-Wei Yen

Academia Sinica

Jinghua Yuan

Chinese Academy of Sciences

Hyeong-Sik Yun

Kyung Hee University

Tetsuya Zenko

Kagawa University

Guoyin Zhang

Chinese Academy of Sciences

Chuan-Peng Zhang

Chinese Academy of Sciences

Yapeng Zhang

University College London (UCL)

Jianjun Zhou

Kyung Hee University

Lei Zhu

Chinese Academy of Sciences

Ilse de Looze

Vietnam Academy of Science and Technology

C. Darren Dowell

Jet Propulsion Laboratory, California Institute of Technology

Sam Falle

Beijing Normal University

Jean-Francois Robitaille

University of Leeds

Sven van Loo

Université Grenoble Alpes

Astrophysical Journal

0004-637X (ISSN) 1538-4357 (eISSN)

Vol. 918 2 85

Ämneskategorier

Astronomi, astrofysik och kosmologi

Annan fysik

Fusion, plasma och rymdfysik

DOI

10.3847/1538-4357/ac0ce9

Mer information

Senast uppdaterat

2021-10-01