Abstract
How important is the magnetic (B-) field when compared to gravity and turbulence in the star-formation process? Does its importance depend on scale and location? We summarize submm dust polarization observations towards the large filamentary infrared dark cloud G34 and towards a dense core in the high-mass star-forming region W51. We detect B-field orientations that are either perpendicular or parallel to the G34 filament axis. These B-field orientations further correlate with local velocity gradients. Towards three cores in G34 we find a varying importance between B-field, gravity, and turbulence that seems to dictate varying types of fragmentation. At highest resolution towards the gravity-dominated collapsing core W51 e2 we resolve new B-field features, such as converging B-field lines and possibly magnetic channels.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 557-559 |
| Number of pages | 3 |
| Journal | Memorie della Societa Astronomica Italiana - Journal of the Italian Astronomical Society |
| Volume | 88 |
| Issue number | 4 |
| State | Published - 2017 |
| Event | 2017 Conference Francesco's Legacy: Star Formation in Space and Time - Firenze, Italy Duration: Jun 5 2017 → Jun 9 2017 |
Keywords
- ISM: Individual objects: (G34,W51)
- ISM: Magnetic field
- Polarization
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Radiology Nuclear Medicine and imaging
- Astronomy and Astrophysics
- Instrumentation
- Atomic and Molecular Physics, and Optics