/ftp/cats/7/142A



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VII/142A      Southern Redshifts Catalogue         (Fairall+, 1991)
The following files can be converted to FITS (extension .fit .fgz or .fiZ)
	catalog.dat refs.dat
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Query from: http://vizier.cds.unistra.fr/viz-bin/VizieR?-source=VII/142A
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Beginning of ReadMe : VII/142A Southern Redshifts Catalogue (Fairall+, 1991) ================================================================================ Southern Redshifts Catalogue and Plots Fairall A.P., Jones A. <Publ. Dept. Astron., U. Cape Town No. 11 (1991)> =1991srcp.book.....F ================================================================================ ADC_Keywords: Galaxies, optical; Redshifts Abstract: This catalogue provides a "best-estimate" of the heliocentric radial velocities of some 13000 galaxies south of Declination 0 degrees. It is based on over 17000 redshift measurements, from over 200 sources, either published or otherwise made public. Aside from redshift references, each entry includes flags as to whether the velocity is from optical or radio observations, or both, as well as an indication of the nature of any optical emission lines. Galaxies with velocities beyond 75000 km/s are not included. All entries have been made interactively, by one person (A.P.F.). The interaction was necessary because different investigators may use different names, quote slightly different positions, and obtain slightly different velocities for the same galaxy. Thus duplicate entries for the same galaxy are avoided (although a few may inevitably be included). Introduction: Previous Versions of this Work: 1981 Catalogue "A Simple Source Catalogue of Galaxies south of Declination -17.5 degrees that have been observed spectroscopically" P.J.K. Dobbie and A.P. Fairall, Publ. Dept. Astr. Univ. Cape Town, No. 4. 1983 Catalogue "A Catalogue of Galaxies south of Declination -30 degrees that have been observed spectroscopically" A.P. Fairall, L. Lowe and P.J.K. Dobbie, Publ. Dept. Astr. Univ. Cape Town, No. 5. 1983 Plots "The Spatial Distribution of Galaxies in the Southern Sky" H. Winkler, Mon. Not. Astr. Soc. Sthn. Africa, 42, 74. "The Spatial Distribution of Galaxies in the Southern Sky" A.P. Fairall and H. Winkler in "Clusters and Groups of Galaxies", p. 23. F. Mardirossian et al. (Eds.) Reidel, 1984. 1984 Plots "A Southern Redshift Survey - Redshift-Space Distributions of Normal and Active Galaxies South of Declination -30 degrees" A.P. Fairall, Publ. Dept. Astr. Univ. Cape Town, No. 6. 1985 Catalogue "A Catalogue of Galaxies South of Declination -30 degrees that have been observed spectroscopically (1985 Version)" A.P. Fairall, Publ. Dept. Astr. Univ. Cape Town, No. 7. Machine-Readable Version by Anne C. Raugh (March 1987) distributed by the Astronomical Data Center, NASA Goddard Space Flight Center. 1988 Catalogue and Plots "Southern Redshifts - Catalogue and plots" A.P. Fairall and A. Jones, Publ. Dept. Astr. Univ. Cape Town, No. 10. Machine-Readable Version by Anne C. Raugh (January 1989) distributed by the Astronomical Data Center, NASA Goddard Space Flight Center. 1990 Plots "Large-Scale Structure in the Universe: Plots from the Updated Catalogue of Radial Velocities of Galaxies and the Southern Redshift Catalogue" A.P. Fairall, G.G.C. Palumbo, G. Vettolani, G. Kauffmann, A. Jones and G. Baiesi-Pillastrini, Mon. Not. R. astr. Soc., 247, 21P. Coverage and Completeness: This catalogue was first published in 1981. The present work is an update and extension of the 4th version, completed in January 1988. Since that version, the northern Declination limit has been shifted from -17.5 degrees to the equator, and radio velocities have been included. The new version, including updated references, has just over double the number of galaxies in the previous version. Whilst most of the references are original source papers, the catalogue was founded on the de Vaucouleurs Second Reference Catalogue (Ref 001) to take care of references prior to 1975. In similar fashion, the HI database of Bottinelli et al (Ref 150), published in 1990, has been used to fill in many of the radio velocities. Literature searches have been made covering the main journals up to Apr-Jun 1991. Whilst the aim is to obtain all available redshifts, experience has shown that, inevitably, some references are overlooked, and no claim to completeness can be made. This is particularly applicable to the Declination zone 0 to -17.5 degrees, into which the catalogue has recently been extended. Apologies are made to any author whose work has been unintentionally omitted. The authors would obviously welcome any reports regarding reference coverage. The preparation of a definitive catalogue that includes all sources, with exhaustive searching and detailed checking, is a major task. Its coverage must necessarily lag behind current literature. The present work does not claim to be a definitive work, but its coverage is up to only 3 or 4 months short of its publication. Past versions of this catalogue have been well received, and demand has prompted the preparation of the new version. One of the authors (A.P.F.) is also involved in the preparation of the definitive updated version of the "Catalogue of Radial Velocities of Galaxies" with G.G.C. Palumbo, G. Vettolani and G. Baiesi-Pillastrini, based in Bologna. That catalogue shows all individual measurements for galaxies over the whole sky. A significant fraction of the effort to produce a catalogue of this nature goes to dealing with references that give only designations (not always obvious ones) of galaxies without providing their coordinates - or which give only galactocentric, not heliocentric, velocities. Such references can take a considerable amount of processing, even before they are entered. Authors and referees should appreciate the importance of accurate coordinates (even with obvious NGC galaxies) for identification purposes. The released version of this catalogue is a public version. The full catalogue does include a few hundred addition redshifts (obtained at the South African Astronomical Observatory, in collaboration with L. da Costa and his group) that have not yet been published. Computer Management of the Catalogue: The catalogue is managed in IBM-compatible PCs using dedicated software developed by one of the authors. It allows almost instant access to galaxies at any coordinate position, or within a chosen error box. It offers full editing facilities and can produce ASCII files etc. The procedure for entering a new velocity determination is initiated by typing in (or interactively feeding from a file) the 1950 coordinates. The computer then searches within 1m in R.A. and 2 arcmin in Declination (the generous range in R.A. is to allow for objects close to the pole), so to determine if an entry for the galaxy already exists. The option is then given to decide whether to add a new entry or edit an existing one. One of the features of the software package is the identification of any form of subset of the data - such as all galaxies within a specified range of R.A. and Declination, range of galactic longitude and latitude, specified velocity range or common velocity flag, common reference or common type. Obviously such subsets are not available in this publication, but special requests can be considered. Hardcopy and Computer-readable Versions of this Catalogue: This catalogue is being distributed in two forms. One is a conventional printed version, the other is a weight-reduced version with the catalogue and reference lists compressed onto a computer diskette. The computer-readable version is distributed by the Strasbourg and Goddard data centres.