Mathematics – Logic
Scientific paper
Oct 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...217...27y&link_type=abstract
Astrophysical Journal, Part 1, vol. 217, Oct. 1, 1977, p. 27-33. Research supported by the U.S.-Israel Binational Science Found
Mathematics
Logic
28
Astrodynamics, Astronomical Models, Galactic Clusters, Galactic Evolution, Galactic Structure, Radial Velocity, Correlation Coefficients, Dynamic Models, Gravitational Fields, Halos, Luminosity, Mass Distribution, Velocity Distribution
Scientific paper
Turner's (1976) radial-velocity data for binary galaxies are analyzed in the framework of a massive-halo model in which luminosity is not a dynamical variable over distances exceeding the luminous range and the radial-velocity difference is not correlated with projected separation. The compatibility of Turner's data with these assumptions is demonstrated, the relevant dynamical variables are found not to be correlated significantly with morphological type, and it is shown that the observed distribution in radial-velocity difference is consistent with underlying Gaussian distribution law. Some dynamical implications of these results are discussed, and the possibility is considered that the binary galaxies examined are not dynamically isolated systems.
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