Mathematics – Logic
Scientific paper
Jul 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aipc..336..125b&link_type=abstract
Dark matter. AIP Conference Proceedings, Volume 336, pp. 125-128 (1995).
Mathematics
Logic
4
Dark Matter, Spiral Galaxies, Masses And Mass Distribution
Scientific paper
For a sample of 23 disk galaxies with accurate neutral hydrogen rotation curves detailed mass models were constructed. They are based on the maximum-disk hypothesis with the assumption that disk and bulge mass-to-light ratios do not vary with radius. The models provide estimates of the mass of each individual component and a number of interesting correlations between the properties of dark and luminous matter on the one hand and morphological type on the other emerges. One of the most fascinating trends is the decrease of the dark-to-luminous mass ratio towards earlier spiral types. This trend suggests that Sa galaxies contain very little dark matter relative to the visible mass and prompted us to start a project studying the internal kinematics in Sa galaxies. Sa's have been understudied as a class and were not represented in the sample of 23 galaxies. Finally I present the remarkable results on the first VLA observations in this project.
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