Artículo de revista
Interferometric mapping of magnetic fields: The massive star-forming region G34.4+0.23 MM
Fecha
2008-03-20Registro en:
ASTROPHYSICAL JOURNAL Volume: 676 Issue: 1 Pages: 464-471 Published: MAR 20 2008
0004-637X
Autor
Cortés, P. C.
Crutcher, R. M.
Shepherd, D. S.
Bronfman Aguiló, Leonardo
Institución
Resumen
We report millimeter interferometric observations of polarized continuum and line emission from the massive star-forming region G34.4. Polarized thermal dust emission at 3 mm wavelength and CO J = 1 -> 0 line emission were observed using the Berkeley-Illinois-Maryland Association (BIMA) array. Our results show a remarkably uniform polarization pattern in both dust and in CO J = 1 -> 0 emission. In addition, the line emission presents a consistent uniform polarization pattern over most of the velocity channel maps. These uniform polarization patterns are aligned with the north-south main axis of the filament between the main millimeter source (MM) and the ultra-compact H II region, which are the central sources in G34.4, suggesting a magnetic field orthogonal to this axis. This morphology is consistent with a magnetically supported disk seen roughly edge-on.