Toward the application of metric size function in galactic evolution and cosmology

Creators: Djorgovski, S.; Spinrad, H.

Abstract

We have measured the metric size function η(r) defined by Petrosian on a limited sample of luminous distant galaxies, up to a redshift of 1.175. Although our investigation has a preliminary character, we find some evidence for the evolution of elliptical galaxies. Using the Ostriker-Hausman theoretical models, we place some constraints on the rates of dynamical evolution. The eta function appears to be an extremely sensitive probe for the investigation of galactic evolution and potentially useful in cosmology. Some problems and directions for future work are outlined.

Additional Information

© 1981 The American Astronomical Society. Provided by the NASA Astrophysics Data System. Received 1981 March 12; accepted 1981 June 23. We are greatly indebted to D. Koo, R. Kron, and I. King for most useful conversations. Much of the initial inspiration for this work is due to Kron and Koo. We thank I. King and F. Schweizer for providing us with unpublished data. S. Hildreth and R. Mathieu helped with the data reduction. H. Spinrad was supported by the National Science Foundation. S. Djorgovski was supported by the Berkeley Astronomy Department. We thank the referee for comments which helped clarify some of the implicit assumptions.

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