CO emission from the nucleus of infrared galaxy NGC 4418 - an early AGM phase?

Details CO emission from the nucleus of infrared galaxy NGC 4418 - an early AGM phase? CO emission from the nucleus of infrared galaxy NGC 4418 - an early AGM phase?

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...365l...1k&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 365, Dec. 10, 1990, p. L1-L3.

Astronomy and Astrophysics

Astronomy

10

Active Galactic Nuclei, Carbon Monoxide, Emission Spectra, Infrared Sources (Astronomy), Far Infrared Radiation, Interstellar Matter, Molecular Clouds, Seyfert Galaxies, Starburst Galaxies

Scientific paper

The present consideration of the highly extinguished galaxy NGC 4418, from which the C-12O (J=1-0) emission has been detected, notes that the combination of the narrow CO line width with the extinction value derived from the 10 micron silicate absorption suggests either a high concentration of the molecular gas clouds toward the center or their dynamical decoupling from the underlying stellar system. It is in view of this hypothesis that NGC 4418 is at the very early phase of its AGN activity, and that nucleus radiation is first efficiently absorbed by the dense ambient gas and then reemitted in the far-IR.

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