The mass-to-light ratios of binary galaxies

Details The mass-to-light ratios of binary galaxies The mass-to-light ratios of binary galaxies

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..260v&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 91, June-July 1979, p. 260-262.

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3

Galaxies, Mass To Light Ratios, Data Sampling, Elliptical Galaxies, Galactic Radiation, Halos, Statistical Analysis

Scientific paper

It is shown that statistically selected samples of binary galaxies contain an excess of E and SO galaxies. This suggests that such samples are contaminated by cluster members. Binary samples that are contaminated in this way will produce an overestimate of the mass/light ratio. On the other hand, mergers induced by dynamical friction will selectively remove those objects that have the heaviest halos. Surviving systems will therefore be biased in favor of binaries that started their existence with below average mass/light values.

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