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Paper: Large CO Ratio Variations in NGC 2146
Volume: 320, The Neutral ISM in Starburst Galaxies
Page: 158
Authors: Karlsson, E.; Aalto, S.; Bergman, P.
Abstract: We present a high resolution mosaic of 12CO, and a 13CO map, (J = 1 − 0) in the edge-on starburst NGC 2146, observed with the OVRO mm array. The integrated intensity ratio (12CO/13CO) shows symmetric variations of up to a factor of two along the major axis. Line of sight path lenght effects can reproduce such variations. Several out-of-plane GMA's are detected. Two of them appear to be associated with a nuclear outflow — while other belong to a dusty arm crossing the center of the galaxy.
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