Molecular spiral structure in M51 from CO(2-1) and CO(1-0) single-dish observations

Details Molecular spiral structure in M51 from CO(2-1) and CO(1-0) single-dish observations Molecular spiral structure in M51 from CO(2-1) and CO(1-0) single-dish observations

Jun 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991anph...16...13g&link_type=abstract

Annales de Physique, Vol.16 (3), pp 13-17, Suppl. 3 Jun 1991

Physics

Galaxies: Individual: Messier Number: M51, Ism: Molecules, Molecular Processes, Radio Lines: Galaxies

Scientific paper

We present the main results of our survey of CO (J = 1-0) and (2-1) emission in M 51, 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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