(12)CO(J = 1-0) emission from circumnuclear regions of normal S0 galaxies

Details (12)CO(J = 1-0) emission from circumnuclear regions of normal S0 galaxies (12)CO(J = 1-0) emission from circumnuclear regions of normal S0 galaxies

Aug 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aj....108..468t&link_type=abstract

The Astronomical Journal, vol. 108, no. 2, p. 468-475

Astronomy and Astrophysics

Astronomy

19

Carbon Monoxide, Elliptical Galaxies, Emission Spectra, Galactic Structure, Galactic Nuclei, Molecular Gases

Scientific paper

We present results of (12)CO(J = 1-0) emission-line measurements of 10 optically selected normal S0 galaxies which show little or no optical emission lines in their nuclear regions. The observations include the central 1 kpc diameter. We detected CO emission from six galaxies out of ten. The CO emission was newly detected from one galaxy NGC 7457. The molecular gas mass of the central 1 kpc region of the CO-detected S0 galaxies ranges from 107 to 108 solar mass. The average surface density of molecular gas is 106-7 solar mass kpc-2. Comparing our results with those in literature, we discuss the spatial distribution of the molecular gas and the relationship between the molecular gas content and nuclear activity.

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