A comparative study of galactic radial velocity fields

Details A comparative study of galactic radial velocity fields A comparative study of galactic radial velocity fields

Oct 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...184..122f&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 184, no. 1-2, Oct. 1987, p. 122-132.

Statistics

Computation

8

Galactic Radiation, Galactic Rotation, Milky Way Galaxy, Radial Velocity, Spiral Galaxies, Computational Astrophysics, Stellar Evolution

Scientific paper

The radial velocity fields of the Milky Way system are presently calculated by means of several different galactic rotation curves that are scaled to the new IAU values of 220 km/sec solar velocity and 8.5 kpc Galactic center-sun distance. Centrally symmetric streaming motions, spiral density waves, stochastic self-propagating spiral arm waves, and a galactic warp, are used to modify the model radial velocity fields. A 'grand design' spiral structure is assumed to exist in the Galaxy which could be created by a spiral density wave or by large scale detonation waves, as a result of self-propagating stochastic star formation processes. The multiple ambiguity of kinematic distances everywhere in the Galaxy is demonstrated.

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