Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...119..313w&link_type=abstract
Astronomy and Astrophysics, vol. 119, no. 2, Mar. 1983, p. 313, 314. Research supported by the Natural Sciences and Engineering
Astronomy and Astrophysics
Astrophysics
19
Angular Momentum, Asteroids, Galactic Rotation, Mass Ratios, Planetary Rotation, Stellar Rotation, Cosmology, Galactic Clusters
Scientific paper
The empirical and theoretical status of the correlation between the angular momenta (J) and masses (M) of astronomical systems is discussed. It is noted that if J is equal to the product of M to the alpha power and p (p being a constant), then empirically alpha is approximately 5/3 for objects of any one type. An alpha of approximately 2 would correspond to objects of many different types. In a theoretical sense, alpha = 5/3 can be understood as a consequence of Newtonian physics applied to rotating, gravitationally bound systems. An alpha of approximately 2, however, is connected with the tendency of systems of larger size to have smaller mean densities and may ultimately be cosmological in origin.
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