No anisotropy in angular diameter-redshift relationship
Abstract
USING data for the brightest cluster galaxies, we here consider whether any anisotropy exists in the angular diameter-redshift relationship. This is in response to the finding of Rubin et al.1, who described a `curious' distribution of radial velocities for ScI type galaxies having apparent magnitudes m in the range 14 < m < 15. For two distinct regions of sky, the mean radial velocity for these galaxies differs by ~ 1,400 km s-1 the corresponding mean apparent magnitude differs by ~ 0 mag, compared with the difference of 0.5 mag expected on the basis of this velocity difference. They tentatively concluded that the Hubble parameter H is not isotropic.
- Publication:
-
Nature
- Pub Date:
- February 1976
- DOI:
- 10.1038/259468a0
- Bibcode:
- 1976Natur.259..468E
- Keywords:
-
- Anisotropy;
- Galactic Clusters;
- Galactic Structure;
- Red Shift;
- Absorption Spectra;
- Angular Distribution;
- Compact Galaxies;
- Diameters;
- Astrophysics