Core-scale magnetic fields (red sectors) presumed using delicate and high-resolution dust emission polarization observations utilizing JCMT. The Solar-type star forming cores fragmented out of B213 filament are shown. Credit: Eswaraiah Chakali, et al. 2021
Large-scale, consistent magnetic field morphology of Taurus/B213 region, presumed based on multi-wavelength polarization information.
Large-scale, uniform electromagnetic field morphology of Taurus/B213 region, inferred based on multi-wavelength polarization information. The degree of Fig. 1 is marked with a white box. Credit: Eswaraiah Chakali, et al. 2021
The scientists used high-resolution and sensitive 850-micron dust emission polarization data obtained by the James Clerk Maxwell Telescope (JCMT) using the SCUBA-2 electronic camera together with the POL-2 polarimeter.
The observations were carried out as a part of a large international program called B-fields In STar-forming Region Observations (BISTRO).
” Although formed out of the very same filamentary cloud, Taurus/B213, among the three thick cores having more polarization measurements, just one remembers the fairly consistent large-scale electromagnetic field threading the parental cloud,” stated Dr. Eswaraiah Chakali, lead author of the research study.
This remains in contrast to expectations based upon the theory that magnetic fields manage star formation. If a large-scale electromagnetic field controls throughout cloud build-up, core collapse, and star development, the mean position angle of the electromagnetic field must be comparable throughout different spatial scales.
Further analysis of the gas velocity gradient exposed that the kinematics due to gas accretion flows onto the adult filament might have altered the electromagnetic field configuration.
” Even in the presence of substantial magnetic flux, regional physical conditions can considerably affect magnetic field morphology and their role in star formation,” said Prof. LI Di, co-corresponding author of the research study.
” Our current observations represent among the inmost sub-millimeter polarimetry images ever taken utilizing a single meal telescope toward a Galactic region,” said Prof. QIU Keping of Nanjing University, co-PI of the BISTRO job and a coauthor of the research study.
Prof. LI Di also highlighted “more comprehensive analyses, in combination with Planck information and excellent polarimetry, may provide more insights into the advancement of magnetic fields in this stereotypical low-mass star-forming area.”
Referral: “The JCMT BISTRO Survey: Revealing the Diverse Magnetic Field Morphologies in Taurus Dense Cores with Sensitive Submillimeter Polarimetry” by Chakali Eswaraiah, Di Li, Ray S. Furuya, Tetsuo Hasegawa, Derek Ward-Thompson, Keping Qiu, Nagayoshi Ohashi, Kate Pattle, Sarah Sadavoy, Charles L. H. Hull, David Berry, Yasuo Doi, Tao-Chung Ching, Shih-Ping Lai, Jia-Wei Wang, Patrick M. Koch, Jungmi Kwon, Woojin Kwon, Pierre Bastien, Doris Arzoumanian, Simon Coudé, Archana Soam, Lapo Fanciullo, Hsi-Wei Yen, Junhao Liu, Thiem Hoang, Wen Ping Chen, Yoshito Shimajiri, Tie Liu, Zhiwei Chen, Hua-bai Li, A-Ran Lyo, Jihye Hwang, Doug Johnstone, Ramprasad Rao, Nguyen Bich Ngoc, Pham Ngoc Diep, Steve Mairs, Harriet Parsons, Motohide Tamura, Mehrnoosh Tahani, Huei-Ru Vivien Chen, Fumitaka Nakamura, Hiroko Shinnaga, Ya-Wen Tang, Jungyeon Cho, Chang Won Lee, Shu-ichiro Inutsuka, Tsuyoshi Inoue, Kazunari Iwasaki, Lei Qian, Jinjin Xie, Dalei Li, Hong-Li Liu, Chuan-Peng Zhang, Mike Chen, Guoyin Zhang, Lei Zhu, Jianjun Zhou, Philippe André, Sheng-Yuan Liu, Jinghua Yuan, Xing Lu, Nicolas Peretto, Tyler L. Bourke, Do-Young Byun, Sophia Dai, Yan Duan, Hao-Yuan Duan, David Eden, Brenda Matthews, Jason Fiege, Laura M. Fissel, Kee-Tae Kim, Chin-Fei Lee, Jongsoo Kim, Tae-Soo Pyo, Yunhee Choi, Minho Choi, Antonio Chrysostomou, Eun Jung Chung, Le Ngoc Tram, Erica Franzmann, Per Friberg, Rachel Friesen, Gary Fuller, Tim Gledhill, Sarah Graves, Jane Greaves, Matt Griffin, Qilao Gu, Ilseung Han, Jennifer Hatchell, Saeko Hayashi, Martin Houde, Koji Kawabata, Il-Gyo Jeong, Ji-hyun Kang, Sung-ju Kang, Miju Kang, Akimasa Kataoka, Francisca Kemper, Mark Rawlings, Jonathan Rawlings, Brendan Retter, John Richer, Andrew Rigby, Hiro Saito, Giorgio Savini, Anna Scaife, Masumichi Seta, Gwanjeong Kim, Kyoung Hee Kim, Mi-Ryang Kim, Florian Kirchschlager, Jason Kirk, Masato I. N. Kobayashi, Vera Konyves, Takayoshi Kusune, Kevin Lacaille, Chi-Yan Law, Sang-Sung Lee, Yong-Hee Lee, Masafumi Matsumura, Gerald Moriarty-Schieven, Tetsuya Nagata, Hiroyuki Nakanishi, Takashi Onaka, Geumsook Park, Xindi Tang, Kohji Tomisaka, Yusuke Tsukamoto, Serena Viti, Hongchi Wang, Anthony Whitworth, Hyunju Yoo, Hyeong-Sik Yun, Tetsuya Zenko, Yapeng Zhang, Ilse de Looze, C. Darren Dowell, Stewart Eyres, Sam Falle, Jean-François Robitaille and Sven van Loo, 10 May 2021, The Astrophysical Journal Letters.DOI: 10.3847/ 2041-8213/ abeb1c.
Core-scale electromagnetic fields (red segments) presumed utilizing delicate and high-resolution dust emission polarization observations utilizing JCMT. The Solar-type star forming cores fragmented out of B213 filament are shown. Credit: Eswaraiah Chakali, et al. 2021
Magnetic fields are ubiquitous throughout our Milky Way Galaxy and play a crucial function in all dynamics of interstellar medium. Nevertheless, questions like how Solar-type stars form out of allured molecular clouds, whether the function of magnetic fields changes at numerous scales and densities of molecular clouds, and what elements can alter the morphology of magnetic fields in low-mass dense cores still stay uncertain.
A brand-new research study led by Dr. Eswaraiah Chakali from Prof. LI Dis research group at the National Astronomical Observatories of the Chinese Academy of Sciences (NAOC) has partially answered these concerns. The research study reveals the diverse magnetic field morphologies in Solar-type star forming cores in the Taurus B213 area.
This research study was just recently published in The Astrophysical Journal Letters.