Journal
ASTROPHYSICAL JOURNAL
Volume 553, Issue 2, Pages 604-612Publisher
UNIV CHICAGO PRESS
DOI: 10.1086/320946
Keywords
dust, extinction; infrared : ISM : continuum; ISM : clouds; ISM : individual (Orion Nebula)
Categories
Ask authors/readers for more resources
We present here the continuum submillimeter maps of the molecular cloud around the M42 Nebula in the Orion region. These have been obtained in four wavelength bands (200, 260, 360, and 580 mum) with the Programme National d'Observations Submillimetriques 2 m balloon-borne telescope. The area covered is 7 pc wide (50' at a distance of 470 pc) with a spatial resolution of about 0.4 pc. Thanks to the high sensitivity to faint surface brightness gradients, we have found several cold condensations, with temperatures ranging from 12 to 17 K, within 3 pc of the dense ridge. The statistical analysis of the temperature and spectral index spatial distribution shows an evidence of an inverse correlation between these two parameters. Being invisible in the IRAS 100 mum survey, some cold clouds are likely to be the seeds for future star formation activity going on in the complex. We estimate their masses, and we show that two of them have masses higher than their Jeans masses and may be gravitationally unstable.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available