Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...239..125s&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 239, no. 1-2, Nov. 1990, p. 125-136.
Astronomy and Astrophysics
Astrophysics
22
Galactic Structure, Interstellar Gas, Molecular Clouds, Spiral Galaxies, Carbon, Emission Spectra, Molecular Gases
Scientific paper
Properties of the molecular interstellar medium in three SO galaxies (NGC 404, NGC 4710, and NGC 5195) were examined. The (C-12)O J = 2-1 (230 GHz) and (C-13)O J = 1-2 spectra were obtained during December 1988 observations with the NRAO 12-m telescope at Kitt Peak, and were compared to (C-12)O J = 1-0 spectra. The resultant line ratios were used to compare the molecular properties of the three SO galaxies with those of normal spiral galaxies. It was found that the NGC 404 and NGC 4710 have molecular clouds similar to those observed in normal spirals. On the other hand, the molecular clouds in NGC 5195 were found to be warmer and, possibly, less dense or more clumpy than those seen in typical spiral galaxies. The (C-12)O J = 1-2 map of NGC 5195 is included.
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