Infrared Identification of Cold Molecular Regions

Details Infrared Identification of Cold Molecular Regions Infrared Identification of Cold Molecular Regions

Dec 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aas...18911704c&link_type=abstract

American Astronomical Society, 189th AAS Meeting, #117.04; Bulletin of the American Astronomical Society, Vol. 28, p.1429

Astronomy and Astrophysics

Astronomy

Scientific paper

We describe a new method following the prescription of Laureijs et al. (1991) for identifying cold molecular cores using the 60 and 100 microns observations from the IRAS satellite. Delta I100 = I100 - I60 / theta , where theta is the average 60/100 ratio ( ~ 0.2) for the diffuse ISM, is shown to be a sensitive diagnostic of cold (non star forming) regions with densities in excess of 10(3) \: cm(-3) . Through investigation of the IRAS Sky Survey Atlas for fields containing Lynds 1457, the Pleiades molecular cloud, the Polaris flare clouds and MBM 53-55, we determine that Delta I100 > 2.0 \: MJy/sr is an accurate tracer of cold molecular material. In addition, our method efficiently traces material in the presence of a radiation field greater than the interstellar radiation field (HII regions, sites of embedded star formation) as regions of Delta I100 < -2.0 \: MJy/sr. We present a Delta I100 image revealing substantial cold dense material to the south of MBM 53 as conjectured by Magnani, Blitz and Mundy (1985). This work was performed while S. J. C. held a National Research Council-Phillips Laboratory Research Associateship.

Affiliated with

Also associated with

No associations

Rating

Infrared Identification of Cold Molecular Regions 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 Infrared Identification of Cold Molecular Regions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Infrared Identification of Cold Molecular Regions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-818538