Astronomy and Astrophysics – Astronomy
Scientific paper
May 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aj....117.1995l&link_type=abstract
The Astronomical Journal, Volume 117, Issue 5, pp. 1995-2009.
Astronomy and Astrophysics
Astronomy
7
Galaxies: Clusters: Individual (Coma, Abell 1367), Galaxies: Ism, Ism: Molecules, Radio Emission Lines
Scientific paper
We present CO (1-0) and (2-1) observations of 33 galaxies in the Coma/Abell 1367 supercluster made with the IRAM 30 m telescope. In addition, we observed four of the galaxies with the 15 m JCMT, at CO (2-1). The indicative molecular gas mass correlates strongly with the dust mass, and a stronger relationship is seen between the far-infrared and CO surface brightnesses than between the simple luminosities. Comparison of CO (2-1) spectra from IRAM and JCMT allows an estimate of the size of the CO emission region, which varies between 10% and 100% of the size of the optical disk, contrary to earlier estimates that the CO is contained within the optical half-light radius. There is a slight suggestion that starburst galaxies have a lower ratio of brightness temperatures, T_b(2-1)/T_b(1-0), than other galaxies.
Casoli Fabienne
Dickey John M.
Kazes Ilya
Lavezzi T. E.
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