Double galaxy investigations. II - The redshift periodicity in optically observed pairs

Details Double galaxy investigations. II - The redshift periodicity in optically observed pairs Double galaxy investigations. II - The redshift periodicity in optically observed pairs

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...262...44t&link_type=abstract

Astrophysical Journal, Part 1, vol. 262, Nov. 1, 1982, p. 44-47.

Astronomy and Astrophysics

Astrophysics

31

Galaxies, Red Shift, Optical Emission Spectroscopy, Periodic Variations

Scientific paper

The new sample of optically observed double galaxies is tested for the 72 km/sec periodicity. The periodicity is present in the 200 pair high weight sample at or above the 99% confidence level. Detection varies between subsamples in accord with variation in data uncertainty as expected. Uncertainties in delta-V inferred from the visibility of the periodicity are in close accord with directly determined internal delta-V errors. The result is not dependent upon inclusion or exclusion of the zero peak.

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