Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998apj...493..811s&link_type=abstract
Astrophysical Journal v.493, p.811
Astronomy and Astrophysics
Astronomy
114
Ism: H Ii Regions, Infrared: Ism: Continuum, Ism: Individual Name: Orion Nebula, Ism: Magnetic Fields, Polarization, Stars: Formation
Scientific paper
This paper presents large-scale polarization maps (8' x 8') of the Orion molecular cloud (OMC-1) at far-infrared (100 mu m; 35" resolution) and submillimeter (350 mu m; 18" resolution) wavelengths. The magnetic field shows a pinch at scales less than 0.5 pc with a centroid that is on the OMC-1 ridge, a site of high-mass star formation. We infer that gravitational collapse pulled the magnetic field into an hourglass shape. We estimate that the magnetic, kinetic, and gravitational energies are in equipartition on the ridge and that the magnetic energy dominates in the surrounding ambient envelope. We consider a model in which the ridge and thus high-mass stars gravitationally collapsed out of a cloud that was initially supported by the magnetic field. At flux peaks, there is a reduction in the percent polarization. This effect is discussed in relation to temperature, optical depth, and wavelength.
No associations
LandOfFree
Far-Infrared and Submillimeter Polarization of OMC-1: Evidence for Magnetically Regulated Star Formation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Far-Infrared and Submillimeter Polarization of OMC-1: Evidence for Magnetically Regulated Star Formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Far-Infrared and Submillimeter Polarization of OMC-1: Evidence for Magnetically Regulated Star Formation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1654183