The history of gas in spiral galaxies

Details The history of gas in spiral galaxies The history of gas in spiral galaxies

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987nascp2466..343m&link_type=abstract

Star formation in galaxies, Proceedings of a conference at the California Institute of Technology, Pasadena, California, June 16

Astronomy and Astrophysics

Astronomy

1

Astronomical Models, Density Wave Model, Galactic Structure, Gas Density, Spiral Galaxies, Star Formation, Algorithms, Brightness Distribution, Interstellar Matter, Molecular Clouds

Scientific paper

The general association of luminous young stars with spiral arms in galaxies has led to widespread acceptance of the idea that the formation of massive stars, at least, is somehow triggered by the interaction of interstellar gas clouds with a spiral density wave. A very simple model for the gas in a spiral galaxy, with a specified initial surface density and angular velocity is examined. Typical results from this simple model, with parameters appropriate to NGC 6946, are shown. The accuracy of the presumption that the molecular gas distributions in galaxies is based upon observations of CO J = 1-0 emission, is discussed.

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