ESO-LV (G0): 1989 ESO-Uppsala Galaxy Surface Photometry Catalog (19931106)
FILE: esolv.g0 (15457 galaxies in declination zone -90 < Dec < -17)
CONTENTS: 1989 ESO-Uppsala Galaxy Surface Photometry Catalog by Andris Lauberts and Edwin A. Valentijn
DATASET: This file comes in HyperSky dataset G-13, version 19931106 Availability on HyperSky CD-ROM: Vol. 2 (1995)
DESCRIPTION: This datafile contains a total of 15457 galaxies from the magnetic tape version of THE SURFACE PHOTOMETRY CATALOGUE OF THE ESO-UPPSALA GALAXIES, by Andris Lauberts and Edwin A. Valentijn, published by the European Southern Observatory, Garching bei Munchen, in 1989. As of its publication date, the catalog was the largest collection, by far, of magnitudes and diameters measured by machine. The ESO-LV consists of the results of microdensitometer scans of plates of ESO galaxies. The scans measured both galaxies from the original ESO(B) survey (see HyperSky set M-3) as well as galaxies near the ESO(B) galaxies. Hence the ESO-LV catalog contains more galaxies than the ESO(B), despite the fact that the authors skipped some 50 fields for which photoelectric calibrations were not available.
According to work by R. Buta during preparation of the RC3 galaxy catalog, errors in the ESO-LV total blue and red magnitudes (see data section below) were found to be +/- 0.21 magnitude. The average mean error of the ESO-LV diameters is about 7 percent. The original ESO(B) survey, on which the ESO-LV is based, consists of 606 fields at 5-degree centers and covers the southern sky from -90 to -17.5. (For HyperSky users, these fields can be identified using file eso_serc.a0, available in dataset A-1 or on the HyperSky CD-ROM).
DATA: The HyperSky data file contains the following data from the ESO-LV catalog:
POSITION: the ESO-LV 1950 Right Ascension and Declination, precessed to equinox 2000.
MAG: B(T), the total blue magnitude in the standard Johnson system.
IDENTIFICATION: The ESO-LV number, which corresponds to the original ESO(B) name in the following way.
ESO(B) number: ESO FFF-TTNNN
ESO-LV number: FFFNNN[.n]
where FFF is the field number (1 to 606), TT is the type of object (usually G or IG for these objects), NNN is the sequential number within a field. The n (if present) is an additional number for components or companions near the principal galaxy which were not listed explicitely in the original ESO(B) catalog. There is no way to recover the original ESO(B) name from the ESO-LV name given here. However, the vast majority of ESO-LV field (FFF) and object (NNN) numbers are identical to those in the ESO-B, so no confusion can result. In a very few cases where ESO-LV includes additional nearby galaxies, the original galaxy was assigned a non-zero "n" value. In some of these cases, and in others too, the ESO(B) position was incorrect, so was corrected in ESO-LV. Thus, you will occasionally find that the HyperSky entries for ESO(B) and ESO-LV are slightly different.
COMMENTS: The comment lines contain the following information, provided if available for each object.
* A line with possibly several fields describing the galaxy. If all fields are present, this line will have the following general form:
Hubble-type, Dxd, position-angle
morphology: Hubble-type, based on the numerical type supplied in the catalog, and calculated from the photometric parameters, NOT estimated by eye. Types will be one of cE, E, E/S0, S0^-, S0^0, S0^+, S0/a, Sa, Sab, Sb, Sbc, Sc, Scd, Sd, Sdm, Sm, Im, cI.
Dxd: Galaxy dimensions (major axis by minor axis), in the form Dxd, followed by one of the following: "(arc sec), '(arc min), or deg(degrees). The major axis is the diameter at the standard 25.0 blue mags per square arcsec isophote. The minor axis is derived from the simple mean of the two axis ratios supplied in the ESO-LV catalog, each of which were calculated in different ways, and neither of which corresponds exactly to the standard isophote.
position-angle: position angle of the major axis.
* A line starting with "m(r)=" giving the total red magnitude in the standard Cousins system.
* A line showing alternate galaxy identifications as provided by ESO-LV. These identifications will include abbreviations which reference the following catalogs, as well as others not identified here:
Fa : T. Fairall; lists of southern "compact and bright nucleus" galaxies (from a seven-paper series, 1977-1988)
NGC : Dreyer's New General Catalog
IC : Dreyer's Index Catalogs
MCG : Morphological Catalog of Galaxies
Se : J.L. Sersic; lists of southern objects (J.L. Sersic, Astrophysics and Space Science 28, 365, 1974)
ACKNOWLEDGEMENTS: Thanks is due to Dr. Harold Corwin, Jr., for providing a copy of the catalog data, as well as part of the explanatory information used here.