Molecular spiral structure in Messier 51 from 12CO (2-1) and (1-0) single-dish observations.

Details Molecular spiral structure in Messier 51 from 12CO (2-1) and (1-0) single-dish observations. Molecular spiral structure in Messier 51 from 12CO (2-1) and (1-0) single-dish observations.

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991pgrp.work...13g&link_type=abstract

Japan-France Seminar on Primeval Galaxies and Related Problems, p. 13 - 17

Physics

Scientific paper

The authors present the main results of their survey of CO (J = 1-0) and (2-1) emission in M51, made with the IRAM 30 m telescope. Of all tracers of the inner spiral structure, CO, i.e. presumably the molecular gas, appears as the tracer with the smoothest in-arm distribution, the highest arm-interarm contrast and the most visible streaming motions. Although observed about everywhere, CO, in the interarm region, is mostly concentrated along 4 radial lanes, or bridges, connecting the two main spiral arms.

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