First BISTRO observations of the dark cloud Taurus L1495A-B10: the role of the magnetic field in the earliest stages of low-mass star formation
Creators: name: Ward-Thompson, Derek
name: Karoly, Janik
name: Pattle, Kate
name: Whitworth, Anthony
name: Kirk, Jason
name: Berry, David
name: Bastien, Pierre
name: Ching, Tao-Chung
name: Coude, Simon
name: Hwang, Jihye
name: Kwon, Woojin
name: Soam, Archana
name: Wang, Jia-Wei
name: Hasegawa, Tetsuo
name: Lai, Shih-Ping
name: Qiu, Keping
name: Arzoumanian, Doris
name: Bourke, Tyler L.
name: Byun, Do-Young
name: Chen, Huei-Ru Vivien
name: Chen, Wen Ping
name: Chen, Mike
name: Chen, Zhiwei
name: Cho, Jungyeon
name: Choi, Minho
name: Choi, Youngwoo
name: Choi, Yunhee
name: Chrysostomou, Antonio
name: Chung, Eun Jung
name: Dai, Sophia
name: Debattista, Victor
name: Di Francesco, James
name: Diep, Pham Ngoc
name: Doi, Yasuo
name: Duan, Hao-Yuan
name: Duan, Yan
name: Eswaraiah, Chakali
name: Fanciullo, Lapo
name: Fiege, Jason
name: Fissel, Laura M.
name: Franzmann, Erica
name: Friberg, Per
name: Friesen, Rachel
name: Fuller, Gary
name: Furuya, Ray
name: Gledhill, Tim
name: Graves, Sarah
name: Greaves, Jane
name: Griffin, Matt
name: Gu, Qilao
name: Han, Ilseung
name: Hayashi, Saeko
name: Hoang, Thiem
name: Houde, Martin
name: Hull, Charles L. H.
name: Inoue, Tsuyoshi
name: Inutsuka, Shu-ichiro
name: Iwasaki, Kazunari
name: Jeong, Il-Gyo
name: Johnstone, Doug
name: Konyves, Vera
name: Kang, Ji-hyun
name: Kang, Miju
name: Kataoka, Akimasa
name: Kawabata, Koji
name: Kemper, Francisca
name: Kim, Jongsoo
name: Kim, Shinyoung
name: Kim, Gwanjeong
name: Kim, Kyoung Hee
name: Kim, Mi-Ryang
name: Kim, Kee-Tae
name: Kim, Hyosung
name: Kirchschlager, Florian
name: Kobayashi, Masato I. N.
name: Koch, Patrick M.
name: Kusune, Takayoshi
name: Kwon, Jungmi
name: Lacaille, Kevin
name: Law, Chi-Yan
name: Lee, Chang Won
name: Lee, Hyeseung
name: Lee, Yong-Hee
name: Lee, Chin-Fei
name: Lee, Jeong-Eun
name: Lee, Sang-Sung
name: Li, Dalei
name: Li, Di
name: Li, Guangxing
name: Li, Hua-bai
name: Lin, Sheng-Jun
name: Liu, Hong-Li
name: Liu, Tie
name: Liu, Sheng-Yuan
name: Liu, Junhao
name: Longmore, Steven
name: Lu, Xing
name: Lyo, A-Ran
name: Mairs, Steve
name: Matsumura, Masafumi
name: Matthews, Brenda
name: Moriarty-Schieven, Gerald
name: Nagata, Tetsuya
name: Nakamura, Fumitaka
name: Nakanishi, Hiroyuki
name: Ngoc, Nguyen Bich
name: Ohashi, Nagayoshi
name: Onaka, Takashi
name: Park, Geumsook
name: Parsons, Harriet
name: Peretto, Nicolas
name: Priestley, Felix
name: Pyo, Tae-Soo
name: Qian, Lei
name: Rao, Ramprasad
name: Rawlings, Jonathan
name: Rawlings, Mark
name: Retter, Brendan
name: Richer, John
name: Rigby, Andrew
name: Sadavoy, Sarah
name: Saito, Hiro
name: Savini, Giorgio
name: Seta, Masumichi
name: Shimajiri, Yoshito
name: Shinnaga, Hiroko
name: Tahani, Mehrnoosh
name: Tamura, Motohide
name: Tang, Ya-Wen
name: Tang, Xindi
name: Tomisaka, Kohji
name: Tram, Le Ngoc
name: Tsukamoto, Yusuke
name: Viti, Serena
name: Wang, Hongchi
name: Wu, Jintai
name: Xie, Jinjin
name: Yang, Meng-Zhe
name: Yen, Hsi-Wei
name: Yoo, Hyunju
name: Yuan, Jinghua
name: Yun, Hyeong-Sik
name: Zenko, Tetsuya
name: Zhang, Guoyin
name: Zhang, Yapeng
name: Zhang, Chuan-Peng
name: Zhou, Jianjun
name: Zhu, Lei
name: de Looze, Ilse
name: Andre, Philippe
name: Dowell, C. Darren
name: Eden, David
name: Eyres, Stewart
name: Falle, Sam
name: Gouellec, Valentin J. M. Le
name: Poidevin, Frederick
name: Robitaille, Jean-Francois
name: van Loo, Sven
Publisher: name: arXiv
Year: 2023
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: We present BISTRO Survey 850 μm dust emission polarisation observations of the L1495A-B10 region of the Taurus molecular cloud, taken at the JCMT. We observe a roughly triangular network of dense filaments. We detect 9 of the dense starless cores embedded within these filaments in polarisation, finding that the plane-of-sky orientation of the core-scale magnetic field lies roughly perpendicular to the filaments in almost all cases. We also find that the large-scale magnetic field orientation measured by Planck is not correlated with any of the core or filament structures, except in the case of the lowest-density core. We propose a scenario for early prestellar evolution that is both an extension to, and consistent with, previous models, introducing an additional evolutionary transitional stage between field-dominated and matter-dominated evolution, observed here for the first time. In this scenario, the cloud collapses first to a sheet-like structure. Uniquely, we appear to be seeing this sheet almost face-on. The sheet fragments into filaments, which in turn form cores. However, the material must reach a certain critical density before the evolution changes from being field-dominated to being matter-dominated. We measure the sheet surface density and the magnetic field strength at that transition for the first time and show consistency with an analytical prediction that had previously gone untested for over 50 years (Mestel 1965).
description: 14 pages, 5 figures. ApJ accepted