PGC2003 - Principal Galaxy Catalog (PGC) 2003
In order to provide the best possible identification for each galaxy, the authors give accurate coordinates (typical accuracy of better than 2 arcseconds), diameters, axis ratios and position angles. Diameters and axis ratios have been homogenized to the RC2 system at the limiting surface brightness of 25 B-mag/arcsec2, using a new method (EPIDEMIC).
In order to provide the best designation for each galaxy, the authors have collected names from 50 catalogs. The compatibility of the spelling has been tested against NED and SIMBAD, and, as far as possible a spelling is used that is compatible with both. For some cases, where no consensus exists between NED, SIMBAD and LEDA, the authors have proposed some changes that could make the spelling of names fully compatible.
The full catalog is distributed through the CDS and can be extracted from HYPERLEDA, http://leda.univ-lyon1.fr/.
HYPERLEDA. I. Identification and designation of galaxies. Paturel G., Petit C., Prugniel P., Theureau G., Rousseau J., Brouty M., Dubois P., Cambresy L. <Astron. Astrophys. 412, 45 (2003)> =2003A&A...412...45P
(i) The names have had a blank space inserted between the PGC prefix and the numeric string, and leading zeroes have been dropped, in order to improve legibility: thus, the galaxy rendered as PGC0520795 in the CDS table is given as PGC 520795 here.
(ii) Missing values were represented as "9.99" or "999." in the CDS version, whereas they are herein represented as nulls.
(iii) Up to 12 alternate names for a PGC2003 object are given in the CDS version of this catalog. Because the vast majority of objects, however, have either 0 or 1 alternate names, in order to save space the HEASARC table lists only the first 4 alternate names.
The PGC2003 (HYPERLEDA) Source Designation. Notice that the HEASARC has inserted a blank space between the PGC prefix and the numeric string in the name, and dropped any leading zeroes in the latter, in order to improve legibility: thus, the galaxy rendered as PGC0520795 in the CDS table is given as PGC 520795 here.
The Right Ascension of the galaxy in the selected equinox. This was given in J2000 coordinates and to a precision of 0.1 seconds of time in the originating table.
The Declination of the galaxy in the selected equinox. This was given in J2000 coordinates and to a precision of 1 arcsecond in the originating table.
The Galactic Longitude of the galaxy.
The Galactic Latitude of the galaxy.
The object type, where "G" is used for a galaxy, "M" for a multiple system, and "GM" for a galaxy in a multiple system.
The provisional morphological type from LEDA, according to the RC2 code.
The apparent diameter of the galaxy on a log scale in units of 0.1 arcminutes, converted to the RC3 system at a surface brightness of 25 B-magnitude per square arcsecond.
The actual error in the (log of the) apparent Diameter, in units of 0.1 arcminutes.
The axis ratio of the galaxy on a log scale, i.e., the log of the major axis to the minor axis.
The actual error in the logarithm of the axis ratio.
The adopted 1950-position angle, in degrees, of the major axis, measured from the North to the East. This parameter has values ranging from 0 to 180 degrees. A few values which are exactly equal to zero are taken as 180 degrees.
The rms uncertainty in the position angle, in degrees.
The number of alternate names for the galaxy. Up to 12 alternate names for a PGC2003 object are given in the CDS version of this catalog. Because the vast majority of objects, however, have either 0 or 1 alternate names, in order to save space this HEASARC representation of the table lists only the first 4 alternate names. Names that correspond to a multiple system are written in parentheses. 151 Names that do not agree with NED identification have been written with a question mark (?). 677 names that have been moved from one galaxy to another since the first PGC1989 catalog have been written with an exclamation point (!).
The first alternate name for the galaxy.
The second alternate name for the galaxy.
The third alternate name for the galaxy.
The fourth alternate name for the galaxy.