Anomalous motions of H I clouds

Details Anomalous motions of H I clouds Anomalous motions of H I clouds

Apr 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...145..127b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 145, no. 1, April 1985, p. 127-134.

Astronomy and Astrophysics

Astrophysics

3

Galactic Structure, Hydrogen Clouds, Interstellar Gas, Molecular Clouds, Ballistic Trajectories, Molecular Spectra

Scientific paper

The authors have examined a set of H I clouds which have been found to be moving with anomalous velocities and find that the peculiar velocities associated with the Galaxy's spiral arms can explain their motions. Specifically, the authors' Ballistic Particle Model, which describes the motions of giant molecular clouds (GMCs) born in the spiral arms, produces GMCs having velocities similar to observed values in regions of the Galaxy where the anomalous H I clouds are found. In this explanation, the anomalous H I clouds are actually the residual H I in giant molecular clouds. It is shown that the expected molecular emission lines are found.

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