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Title:
Some current trends in Milky Way research (the Henry Norris Russell Lecture)
Authors:
Bok, B. J.
Publication:
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 273, Oct. 15, 1983, p. 411-420. (ApJ Homepage)
Publication Date:
10/1983
Category:
Astrophysics
Origin:
STI
NASA/STI Keywords:
GALACTIC STRUCTURE, INTERSTELLAR CHEMISTRY, INTERSTELLAR MATTER, MILKY WAY GALAXY, ASTRONOMICAL MODELS, GALACTIC ROTATION, LUMINOSITY, MOLECULAR CLOUDS, RADIANT FLUX DENSITY, SPIRAL GALAXIES
DOI:
10.1086/161379
Bibliographic Code:
1983ApJ...273..411B

Abstract

A discussion is presented of the Milky Way Galaxy research trends that have recently established a far greater mass and a greater outward extent for the Galaxy than would have been considered likely only 7-8 years ago. The maximum radius of the Galaxy circa 1975 was believed to be of the order of 20 kpc. The new radius is at least three times, and possibly as much as five times, greater than the earlier value. Attention is given to such pertinent topics as the general luminosity function near the central plane of the disk, space densities at different distances from the galactic plane, the galactic corona, spiral structure studies, giant molecular clouds, and bipolar ejections.

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