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Mass-Luminosity Ratios and Sizes of Giant Elliptical Galaxies

Published online by Cambridge University Press:  14 August 2015

Ivan R. King  and
Rudolph Minkowski
Ivan R. King
Affiliation:
Berkeley Astronomy Dept., University of California, Berkeley, Calif. U.S.A.
Rudolph Minkowski
Affiliation:
Radio Astronomy Laboratory, University of California, Berkeley, Calif. U.S.A.

Abstract

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Observations of velocity dispersion and of light distribution at the centers of 22 galaxies, mostly ellipticals give M/L values of 15 to 40 for giants of all luminosities with smaller values for intrinsically faint galaxies. Core radii within which surface brightness drops by a factor of two are typically 50–100 pc with a range from 2 to several hundred parsecs. Elliptical galaxies fit the modified isothermal models used for clusters, while later types have a flatter density gradient. Complete results will be published elsewhere.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 44: External Galaxies and Quasi-Stellar Objects , 1972 , pp. 87 - 88
Copyright
Copyright © Reidel 1972