The distribution of the angular momenta of galaxies |
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Authors: | P Brosche |
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Institution: | (1) Astronomische Institute der Universität Bonn, F.R.G. |
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Abstract: | Since the average relation between the angular momentaP and the massesM of galaxies can be represented by a power lawPM
, we can define a relative angular momentum =P/M
(or a constant timeP/M
). For a random motion picture within protogalaxies, should follow a Maxwellian distribution and consequently the dispersion of log should be 0.210.For the reasonable range of (
to 2), the limited sample of galaxies with known dynamical parameters gives between
and 1 times the Maxwellian value. For the plausible special case =2 the reciprocal of the maximum rotational velocityv
m is already a measure of and the larger sample ofv
m-values not only yields the Maxwellian but, moreover, shows the shape of the distribution.
PM
, =constP/M
. , (lg )=0.210. 7/42, . =2 v
m- . |
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Keywords: | |
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