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Date and Time of the Query: 2019-05-22 T12:30:40 PDT
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For refcode 1989ApJ...336..128T:
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Copyright by American Astronomical Society. Reproduced by permission
1989ApJ...336..128T QUANTIZATION OF REDSHIFT DIFFERENCES IN ISOLATED GALAXY PAIRS W. G. TIFFT AND W. J. COCKE Steward Observatory, University of Arizona Received 1987 December 28; accepted 1988 June 18 ABSTRACT Improved 21 cm data on isolated galaxy pairs eliminates questions of inhomogeneity in the data and reduces observational error to below 5 km s^-1^. Quantization is sharpened, and the "zero" peak is shown to be displaced from zero to a location near 24 km s^-1^. An exclusion principle is suggested whereby identical redshifts are forbidden in limited volumes. New southern hemisphere optical data from L. Schweizer are also found to be consistent with quantization and the avoidance of zero differentials. The radio and Schweizer data are combined with the best optical data on close Karachentsev pairs to provide a cumulative sample of 84 of the best differentials now available. New 21 cm observations are used to test for the presence of small differentials in very wide pairs. The deficiency near zero is found to continue to very wide spacings. A loss of wide pairs by selection bias cannot produce the observed zero deficiency. A new test using pairs selected from the Fisher-Tully catalog is used to demonstrate quantization properties of third components associated with possible pairs. Subject headings: galaxies: redshifts - radio sources: 21 cm radiation
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