Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976a%26a....50..327b&link_type=abstract
Astronomy and Astrophysics, vol. 50, no. 3, Aug. 1976, p. 327-334.
Astronomy and Astrophysics
Astronomy
50
Carbon Monoxide, Interstellar Gas, Molecular Spectra, Turbulence Effects, Astronomical Models, Carbon 13, Cloud Physics, Emission Spectra, Energy Dissipation, Magnetic Effects, Optical Thickness, Radio Astronomy, Turbulent Flow
Scientific paper
In the interpretation of emission from turbulent optically thick gas distributions, distinction must be made between local optical thickness (which influences emission line ratios) and beam-averaged opacity (which describes the transparency of the object as seen by a radio telescope). A simple model, incorporating this distinction, is proposed and is used to estimate the influence of turbulence on the CO emission lines of massive molecular clouds. This influence is also verified by computation of synthetic profiles. The model suggests that large-scale turbulence can explain the apparent contradiction between the CO-12/CO-13 line ratio (which indicates high optical depth) and observations indicating that a CO cloud is transparent in some sense. It is shown that magnetic pressure appears to support the clouds and that turbulent energy can be supplied by slow contraction of the cloud, due to neutral particle drift through the magnetic field.
No associations
LandOfFree
CO emission from turbulent molecular clouds 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 CO emission from turbulent molecular clouds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and CO emission from turbulent molecular clouds will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1872259