The Virgo cluster as a test for quantization of extragalactic redshifts

Details The Virgo cluster as a test for quantization of extragalactic redshifts The Virgo cluster as a test for quantization of extragalactic redshifts

Apr 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..431g&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, April 1, 1990, p. 431-442.

Astronomy and Astrophysics

Astronomy

19

Astrometry, Irregular Galaxies, Local Group (Astronomy), Red Shift, Virgo Galactic Cluster, Dwarf Galaxies, Galactic Structure, Sky Surveys (Astronomy), Spiral Galaxies

Scientific paper

Tifft's (1972, 1977) hypothesis that redshifts are partially quantized with a periodicity in the range 70-75 km/s 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 allowing 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. No such periodicity is found for the dwarf irregulars, but there is a possible periodicity of about 71.1 km/s 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 about 71.0 km/s.

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