The distribution of CO in NGC 4945

Details The distribution of CO in NGC 4945 The distribution of CO in NGC 4945

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270...29d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. 29-42.

Astronomy and Astrophysics

Astrophysics

39

Carbon Monoxide, Emission Spectra, Molecular Gases, Spectral Energy Distribution, Star Formation, Continuous Spectra, Line Spectra, Seyfert Galaxies

Scientific paper

About half of the molecular gas in the present map of the (C-12)O(1-0) emission from NGC 4945 resides in the central 1.1 kpc; the other half is in the outer disk. The kinematical behavior of the CO disk is coupled with that of the H I gas. While the excitation conditions of the molecular gas in the center of NGC 4945 are comparable to those measured in most other starburst and Seyfert nuclei, an exceptionally high line intensity ratio of 0.93 is found in a selected area of the disk which exhibits strong CO emission; such emission indicates ongoing massive star formation in one of the spiral arms.

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