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1999AJ....117.2632B - Astron. J., 117, 2632-2655 (1999/June-0)
High-resolution CO observations of luminous infrared galaxies.
BRYANT P.M. and SCOVILLE N.Z.
Abstract (from CDS):
We suggest that the molecular gas in objects with such high gas mass surface densities (∼104 M☉.pc–2) is distributed in nuclear disks. These disks must be thin because of their self-gravity, with a full width of 30-40 pc (compared to radii of 300-400 pc) for a vertical velocity dispersion of 90 km.s–1. The mean volume density of molecular hydrogen in such disks must be over 104 cm–3. The trend of increasing LFIR/LCO with increasing CO surface brightness is confirmed. The high concentrations of molecular gas thus appear intimately related to the high luminosities of these systems and probably serve as the fuel.
Abstract Copyright: ∼
Journal keyword(s): Galaxies: Interactions - Galaxies: ISM - Galaxies: Nuclei - Galaxies: Seyfert - Galaxies: Starburst - ISM: Molecules
Simbad objects: 37
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