Gu 顾, Qi-Lao 琦烙;
Liu 刘, Tie 铁;
Shen 沈, Zhi-Qiang 志强;
Jiao 焦, Sihan 斯汗;
Montillaud, Julien;
Juvela, Mika;
Lu 吕, Xing 行;
... Di Francesco, James; + view all
(2024)
The Magnetic Field in Quiescent Star-forming Filament G16.96+0.27.
The Astrophysical Journal
, 976
(2)
p. 249.
10.3847/1538-4357/ad8912.
Preview |
PDF
Gu_2024_ApJ_976_249.pdf - Published Version Download (2MB) | Preview |
Abstract
We present 850 μm thermal dust polarization observations with a resolution of 14.″4 (∼0.13 pc) toward an infrared dark cloud G16.96+0.27 using James Clerk Maxwell Telescope/POL-2. The average magnetic field orientation, which roughly agrees with the larger-scale magnetic field orientation traced by the Planck 353 GHz data, is approximately perpendicular to the filament structure. The estimated plane-of-sky magnetic field strength is ∼96 μG and ∼60 μG using two variants of the Davis–Chandrasekhar–Fermi methods. We calculate the virial and magnetic critical parameters to evaluate the relative importance of gravity, the magnetic field, and turbulence. The magnetic field and turbulence are both weaker than gravity, but magnetic fields and turbulence together are equal to gravity, suggesting that G16.96+0.27 is in a quasi-equilibrium state. The alignment between the magnetic field and cloud is found to have a trend moving away from perpendicularity in the dense regions, which may serve as a tracer of potential fragmentation in such quiescent filaments.
| Type: | Article |
|---|---|
| Title: | The Magnetic Field in Quiescent Star-forming Filament G16.96+0.27 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.3847/1538-4357/ad8912 |
| Publisher version: | https://doi.org/10.3847/1538-4357/ad8912 |
| Language: | English |
| Additional information: | © 2024 IOP Publishing. Original content from this work may be used under the terms of the Creative Commons Attribution 4.0 licence (http://creativecommons.org/licenses/by/4.0/). |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10202575 |
Archive Staff Only
 |
View Item |
