SIMBAD references

2000ApJ...535..913S - Astrophys. J., 535, 913-927 (2000/June-1)

Probing the magnetic field structure in the W3 molecular cloud.

SCHLEUNING D.A., VAILLANCOURT J.E., HILDEBRAND R.H., DOWELL C.D., NOVAK G., DOTSON J.L. and DAVIDSON J.A.

Abstract (from CDS):

This paper presents polarization maps of the central 3'x5' region of the W3 molecular cloud at far-infrared (60 and 100 µm) and submillimeter (350 µm) wavelengths. We use the multiwavelength polarization measurements to differentiate between the emission in warm and cool dust components. We infer that the submillimeter observations trace a layer of cool dust with high column density, which we attribute to a large scale ridge of material. This ambient ridge has an orderly magnetic field with evidence for ``hourglass'' field structure; however, the field structure is qualitatively different in size and orientation compared to previous studies. The far-infrared measurements are dominated by warm dust surrounding evolved H II regions or embedded young stars. The warm dust, in contrast to the ridge, has a disrupted magnetic field that varies rapidly in the plane of the sky and along the line of sight, suggesting that the field has been distorted by the expansion of H II regions.

Abstract Copyright:

Journal keyword(s): ISM: H II Regions - Infrared: ISM: Continuum - ISM: Individual: Alphanumeric: W3 - ISM: Magnetic Fields - Polarization - Stars: Formation

Simbad objects: 26

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2000ApJ...535..913S and select 'bookmark this link' or equivalent in the popup menu


2019.09.16-13:12:24

© Université de Strasbourg/CNRS

    • Contact