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For refcode 1991ApJ...366...38D:
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Copyright by American Astronomical Society. Reproduced by permission
1991ApJ...366...38D GALAXY VELOCITY DISPERSIONS USING A CROSS-CORRELATION METHOD CRISTINA DALLE ORE, S. M. FABER, J. JESUS AND ROLAND STOUGHTON University of California Observatories/Lick Observatory, Board of Studies in Astronomy and Astrophysics, University of California, Santa Cruz AND DAVID BURSTEIN Department of Physics and Astronomy, Arizona State University, Tempe Received 1990 January 10; accepted 1990 June 27 ABSTRACT Lick image-dissector scanner spectra obtained from 1972 to 1984 have been used to derive central velocity dispersions for over 350 elliptical galaxies, as published in an earlier paper. This paper details the cross-correlation method used and tabulates central velocity dispersions for 79 additional early-type galaxies not included in that earlier work. The special problems of using the cross-correlation method as applied to IDS data are addressed, and various tests of the effects of random and systematic errors are made to establish the accuracy of the results. A significant difference is described between the present cross-correlation technique and the method as originally developed by Tonry and Davis. Subject headings: galaxies: internal motions - numerical methods ########################################################################## 1991ApJ...375..427O ERRATUM In the paper "Galaxy Velocity Dispersions Using a Cross-Correlation Method" by Cristina Dalle Ore, S. M. Faber, J. Jesus Gonzalez, Roland Stoughton, and David Burstein (ApJ, 366,38 [1991]), the following corrections should be made: 1. The full name of the third author is J. Jesus Gonzalez. 2. The last line of equation (3) should read: [(t x t)*v|d], instead of [(t x t) * v|]. 3. Line 7 of the second paragraph on page 40 should read "...matches the observed FWHM of t x g. Equation (3) is more..."
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