News on the physical and evolutionary status of the giant molecular cloud G 1.6-0.025 according to observations of the 4(-1) - 3(0)E methanol line

Details News on the physical and evolutionary status of the giant molecular cloud G 1.6-0.025 according to observations of the 4(-1) - 3(0)E methanol line News on the physical and evolutionary status of the giant molecular cloud G 1.6-0.025 according to observations of the 4(-1) - 3(0)E methanol line

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992azh....69.1148s&link_type=abstract

Astronomicheskij Zhurnal (ISSN 0004-6299), vol. 69, no. 6, p. 1148-1165.

Astronomy and Astrophysics

Astronomy

1

Galactic Evolution, Hydrogen Clouds, Line Spectra, Methyl Alcohol, Molecular Clouds, Protostars, Gas Density, Physical Properties

Scientific paper

The G 1.6-0.025 giant molecular cloud consists of clumps with sizes ranging from 3 arcsec (0.1 pc) to 5 arcmin (10 pc). Column densities of hydrogen and methanol in the large clumps are about (1-4) x 10 exp 23 and (1-2) x 10 exp 15/sq cm, respectively. Hydrogen densities in the large clumps vary from 100 to 5000/cu cm and in the the small clumps reach values greater than 10 exp 6/cu cm. The high temperature (500-100 K) in the cloud is partially a consequence of collisions with individual clumps. Shocks associated with these collisions can lead to enhancements of methanol abundance in some small-scale clumps with masses not less than 70-300 solar masses, which exhibit spike features in the 4(-1) - 3(0)E line. The sensitivity of a set of methanol lines to physical parameters is considered on the basis of statistical equilibrium calculations.

Affiliated with

Also associated with

No associations

Rating

News on the physical and evolutionary status of the giant molecular cloud G 1.6-0.025 according to observations of the 4(-1) - 3(0)E methanol line 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 News on the physical and evolutionary status of the giant molecular cloud G 1.6-0.025 according to observations of the 4(-1) - 3(0)E methanol line, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and News on the physical and evolutionary status of the giant molecular cloud G 1.6-0.025 according to observations of the 4(-1) - 3(0)E methanol line will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1113806