Abstract
view Abstract Citations (59) References (324) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Gravitational mechanics of systems of galaxies. I - Corrections for errors in redshifts Rood, H. J. Abstract Recent 21 cm hydrogen redshifts accurate to about 8 km/s are used to derive zero point corrections, rms uncertainties and the percentage of discordant optical and 21 cm redshifts from previous catalogs. Optical redshifts have a typical rms uncertainty of about 100 km/s, independent of the epoch of the redshift source, and the rms correction factor appropriate to optical redshifts in the RC1 is 1.33, while that for the RC2 is 1.42. Cross-correlation techniques applied to absorption line spectra and conventional techniques applied to emission line spectra yield a rms uncertainty of 37 km/s for a large sample of galaxies. An analysis with a new catalog of galaxy redshifts leads to closer agreement between the luminosity function for close binary galaxies and that for field galaxies by Felten (1977). Redshifts versus magnitude diagrams for central regions of the Coma cluster may contain clumpings of points, which are in agreement with evidence of subclustering. Publication: The Astrophysical Journal Supplement Series Pub Date: May 1982 DOI: 10.1086/190792 Bibcode: 1982ApJS...49..111R Keywords: Astronomical Catalogs; Centimeter Waves; Galactic Clusters; Radio Galaxies; Red Shift; Velocity Errors; Circular Orbits; Gravitation Theory; H Lines; Luminosity; Mass To Light Ratios; Spiral Galaxies; Virial Theorem; Visual Observation; Astrophysics full text sources ADS |
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