The JCMT BISTRO-3 Survey: Variation of magnetic field orientations on parsec and sub-parsec scales in the massive star-forming region G28.34+0.06

Fuente: arXiv

Saved in:

Bibliographic Details
Main Authors:	Hwang, Jihye, Pattle, Kate, Lee, Chang Won, Karoly, Janik, Kim, Kee-Tae, Kim, Jongsoo, Liu, Junhao, Qiu, Keping, Lyo, A-Ran, Eden, David, Koch, Patrick M., Arzoumanian, Doris, Sharma, Ekta, Poidevin, Frédérick, Johnstone, Doug, Coudé, Simon, Tahani, Mehrnoosh, Ward-Thompson, Derek, Soam, Archana, Kang, Ji-hyun, Hoang, Thiem, Kwon, Woojin, Ngoc, Nguyen Bich, Onaka, Takashi, Kirchschlager, Florian, Tamura, Motohide, Kwon, Jungmi, Tang, Xindi, Chung, Eun Jung, Bourke, Tyler L., Chakali, Eswaraiah, Liu, Tie, Bastien, Pierre, Furuya, Ray S., Lai, Shih-Ping, Lin, Sheng-Jun, Wang, Jia-Wei, Berry, David
Format:	Preprint
Published:	2025
Subjects:	Astrophysics of Galaxies Solar and Stellar Astrophysics
Online Access:	Acceder al recurso
Tags:	Add Tag No Tags, Be the first to tag this record!

_version_	1866916756184891392
author	Hwang, Jihye Pattle, Kate Lee, Chang Won Karoly, Janik Kim, Kee-Tae Kim, Jongsoo Liu, Junhao Qiu, Keping Lyo, A-Ran Eden, David Koch, Patrick M. Arzoumanian, Doris Sharma, Ekta Poidevin, Frédérick Johnstone, Doug Coudé, Simon Tahani, Mehrnoosh Ward-Thompson, Derek Soam, Archana Kang, Ji-hyun Hoang, Thiem Kwon, Woojin Ngoc, Nguyen Bich Onaka, Takashi Kirchschlager, Florian Tamura, Motohide Kwon, Jungmi Tang, Xindi Chung, Eun Jung Bourke, Tyler L. Chakali, Eswaraiah Liu, Tie Bastien, Pierre Furuya, Ray S. Lai, Shih-Ping Lin, Sheng-Jun Wang, Jia-Wei Berry, David
author_facet	Hwang, Jihye Pattle, Kate Lee, Chang Won Karoly, Janik Kim, Kee-Tae Kim, Jongsoo Liu, Junhao Qiu, Keping Lyo, A-Ran Eden, David Koch, Patrick M. Arzoumanian, Doris Sharma, Ekta Poidevin, Frédérick Johnstone, Doug Coudé, Simon Tahani, Mehrnoosh Ward-Thompson, Derek Soam, Archana Kang, Ji-hyun Hoang, Thiem Kwon, Woojin Ngoc, Nguyen Bich Onaka, Takashi Kirchschlager, Florian Tamura, Motohide Kwon, Jungmi Tang, Xindi Chung, Eun Jung Bourke, Tyler L. Chakali, Eswaraiah Liu, Tie Bastien, Pierre Furuya, Ray S. Lai, Shih-Ping Lin, Sheng-Jun Wang, Jia-Wei Berry, David
contents	Magnetic fields play a significant role in star-forming processes on core to clump scales. We investigate magnetic field orientations and strengths in the massive star-forming clump P2 within the filamentary infrared dark cloud G28.34+0.06 using dust polarization observations made using SCUBA-2/POL-2 on the James Clerk Maxwell Telescope as part of the B-field In STar-forming Region Observations (BISTRO) survey. We compare the magnetic field orientations at the clump scale of ~2 parsecs from these JCMT observations with those at the core scale of ~0.2 parsecs from archival ALMA data, finding that the magnetic field orientations on these two different scales are perpendicular to one another. We estimate the distribution of magnetic field strengths, which range from 50 to 430 μG over the clump. The region forming the core shows the highest magnetic field strength. We also obtain the distribution of mass-to-flux ratios across the clump. In the region surrounding the core, the mass-to-flux ratio is larger than 1, which indicates the magnetic field strength is insufficient to support the region against gravitational collapse. Therefore, the change in the magnetic field orientation from clump to core scales may be the result of gravitational collapse, with the field being pulled inward along with the flow of material under gravity.
format	Preprint
id	arxiv_https___arxiv_org_abs_2505_14047
institution	arXiv
publishDate	2025
record_format	arxiv
spellingShingle	The JCMT BISTRO-3 Survey: Variation of magnetic field orientations on parsec and sub-parsec scales in the massive star-forming region G28.34+0.06 Hwang, Jihye Pattle, Kate Lee, Chang Won Karoly, Janik Kim, Kee-Tae Kim, Jongsoo Liu, Junhao Qiu, Keping Lyo, A-Ran Eden, David Koch, Patrick M. Arzoumanian, Doris Sharma, Ekta Poidevin, Frédérick Johnstone, Doug Coudé, Simon Tahani, Mehrnoosh Ward-Thompson, Derek Soam, Archana Kang, Ji-hyun Hoang, Thiem Kwon, Woojin Ngoc, Nguyen Bich Onaka, Takashi Kirchschlager, Florian Tamura, Motohide Kwon, Jungmi Tang, Xindi Chung, Eun Jung Bourke, Tyler L. Chakali, Eswaraiah Liu, Tie Bastien, Pierre Furuya, Ray S. Lai, Shih-Ping Lin, Sheng-Jun Wang, Jia-Wei Berry, David Astrophysics of Galaxies Solar and Stellar Astrophysics Magnetic fields play a significant role in star-forming processes on core to clump scales. We investigate magnetic field orientations and strengths in the massive star-forming clump P2 within the filamentary infrared dark cloud G28.34+0.06 using dust polarization observations made using SCUBA-2/POL-2 on the James Clerk Maxwell Telescope as part of the B-field In STar-forming Region Observations (BISTRO) survey. We compare the magnetic field orientations at the clump scale of ~2 parsecs from these JCMT observations with those at the core scale of ~0.2 parsecs from archival ALMA data, finding that the magnetic field orientations on these two different scales are perpendicular to one another. We estimate the distribution of magnetic field strengths, which range from 50 to 430 μG over the clump. The region forming the core shows the highest magnetic field strength. We also obtain the distribution of mass-to-flux ratios across the clump. In the region surrounding the core, the mass-to-flux ratio is larger than 1, which indicates the magnetic field strength is insufficient to support the region against gravitational collapse. Therefore, the change in the magnetic field orientation from clump to core scales may be the result of gravitational collapse, with the field being pulled inward along with the flow of material under gravity.
title	The JCMT BISTRO-3 Survey: Variation of magnetic field orientations on parsec and sub-parsec scales in the massive star-forming region G28.34+0.06
topic	Astrophysics of Galaxies Solar and Stellar Astrophysics
url	https://arxiv.org/abs/2505.14047