High spatial resolution isotopic CO and CS observations of M17 SW: The clumpy structure of the molecular cloud core

Details High spatial resolution isotopic CO and CS observations of M17 SW: The clumpy structure of the molecular cloud core High spatial resolution isotopic CO and CS observations of M17 SW: The clumpy structure of the molecular cloud core

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989stin...9023283s&link_type=abstract

Unknown

Physics

Carbon Monoxide, Line Spectra, Molecular Clouds, Spatial Resolution, Sulfur Compounds, Clumps, Cluster Analysis, Emission Spectra, High Resolution, Interstellar Matter, Spectrum Analysis

Scientific paper

High angular resolution maps of the M17 SW cloud core in the C(018) and C(S34), for J transitions from 2 to 1, and for line transitions from 3 to 2, were obtained with the 30 m infrared telescope on Pico Valeta (Spain). These maps directly reveal the clumpy structure of the entire cloud core down to linear scales of 0.14 pc (13 arc seconds) and below. Individual clumps have linewidths as small as 0.5 km/s, compared to a linewidth of 3 to 5 km/s observed with lower angular resolution in the same lines. The C(018) 2 to 1 emission line reaches a peak brightness temperature of 24K in the 13 arcsecond beam and probably slightly optically thick in several locations. Spectra in the more abundant CO isotopes obtained toward several selected positions show strong self absorption notches and peak brightness temperatures in between these notches of about 100 K. The main isotope emission comes from only a small fraction of the total material with extreme physical conditions not at all characteristic of the bulk of the cloud. The clump/interclump density contrast is estimated at about at least 23.

Affiliated with

Also associated with

No associations

Rating

High spatial resolution isotopic CO and CS observations of M17 SW: The clumpy structure of the molecular cloud core 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 High spatial resolution isotopic CO and CS observations of M17 SW: The clumpy structure of the molecular cloud core, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High spatial resolution isotopic CO and CS observations of M17 SW: The clumpy structure of the molecular cloud core will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1828157