Phenomenological analysis of observed relations for low-redshift galaxies
- 1 December 1975
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 72 (12) , 4691-4695
- https://doi.org/10.1073/pnas.72.12.4691
Abstract
Maximum-likelihood estimates are made for the exponent p in the phenomenological redshift-distance relation z [unk] r p for galaxies at redshifts ≲0.03, on the basis of redshift ( z )-magnitude ( m )-apparent diameter (θ) observations given in the Reference Catalogue of Bright Galaxies [de Vaucouleurs, G. & de Vaucouleurs, A. (1964)]. The estimates are in the range 1.96 ≤ p ≤ 2.04 for the full sample of 742 galaxies having m - z - θ data, with dispersions ≲0.08, and in a similar but broader range for various subsamples. Explicit allowance for an observational cut-off in apparent magnitude in the m - z relation reinforces the result that p ∼ 2. Independent estimation based on a cut-off independent generalized Kafka-Schmidt V/V m test for a subsample in conservatively limited redshift and magnitude ranges, yields p = 2.05.Keywords
This publication has 3 references indexed in Scilit:
- Observational validation of the chronometric cosmology: I. Preliminaries and the redshift-magnitude relationProceedings of the National Academy of Sciences, 1975
- A Variant of Special Relativity and Long-Distance AstronomyProceedings of the National Academy of Sciences, 1974
- A relation between distance and radial velocity among extra-galactic nebulaeProceedings of the National Academy of Sciences, 1929