Simulation of the apparent anomalies of the galactic structure

Details Simulation of the apparent anomalies of the galactic structure Simulation of the apparent anomalies of the galactic structure

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.107...85j&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 107, no. 1, Dec. 1984, p. 85-107.

Astronomy and Astrophysics

Astrophysics

1

Anomalies, Astronomical Models, Galactic Structure, Milky Way Galaxy, Astronomical Maps, Hydrogen, Neutral Gases, Red Shift, Spiral Galaxies, Star Distribution, Stellar Motions

Scientific paper

Apparent anomalies in the Galactic spiral structure are identified, and a simple interpretation of them in terms of a nonvelocity redshift field within the Galaxy is given. Numerical simulations of the anomalous features using this model are presented, and the model anomalies are compared with those in previously published maps. The bilateral asymmetry of the extent of neutral hydrogen in the Galaxy found by Henderson et al. (1982) is simulated by the kinematical method. Finally, an alternative solution to some of the anomalies involving either a general expansion of the Galactic disk or an outward motion of the local standard of rest is discussed, and its significance for mapping the Galaxy and for the redshift problem is addressed.

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