NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-03-19 T12:49:12 PDT
Help | Comment | NED Home

For refcode 1990MNRAS.243..431G:
Retrieve 189 NED objects in this reference.
Please click here for ADS abstract

NED Abstract

Copyright by Royal Astronomical Society. 1990MNRAS.243..431G The Virgo cluster as a test for quantization of extragalactic redshifts B. N. G. Guthrie and W. M. Napier Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ Accepted 1989 October 4. Received 1989 June 16; in original form 1988 March 10 SUMMARY Tifft's hypothesis that redshifts are partially quantized with a periodicity in the range 70-75 km s^-1^ is tested for samples of bright spiral and dwarf irregular galaxies with accurate H I redshifts in the region of the Virgo cluster. The heliocentric redshifts are corrected for solar motion, first by adopting an estimate of the Sun's motion with respect to the centroid of the Local Group, and then by aUowing the solar velocity vector to vary in direction over the whole sky. Power spectrum analyses of the corrected redshifts are used to search for a significant periodicity in the prescribed range 70-75 km s^-1^. No such periodicity is found for the dwarf irregulars, but there is a possible periodicity of ~71.1 km s^-1^ for the bright spirals. In a further exploratory study, the sample of 112 spirals is divided up according to environment. The spirals in high-density regions of the cluster show no quantization, whereas those in low-density regions appear to be partially quantized in intervals of ~71.0 km s^-1^. Allowing for the a posteriori nature of the selection procedure, the partial quantization for 48 spirals in low-density regions has a confidence level 0.996 <~ C <~ 0.999 if it is assumed that the Local Group is falling directly towards the Virgo cluster.
Retrieve 189 NED objects in this reference.
Please click here for ADS abstract

Back to NED Home