WBHGP20CM - New Catalog of Compact 20cm Sources in the Galactic Plane
The images from which this catalog was constructed are available at the MAGPIS web site, http://third.ucllnl.org/gps
New catalogs of compact radio sources in the galactic plane. White R.L., Becker R.H., Helfand D.J. <Astron. J., 130, 586-596 (2005)> =2005AJ....130..586W
The name of the radio source using the '[WBH2005] G' prefix recommended by the Dictionary of Nomenclature of Celestial Objects and based on the Galactic longitude and latitude of the source.
The Right Ascension of the radio source in the selected equinox. This was given in J2000.0 equatorial coordinates to a precision of 0.001 seconds of time in the original table.
The Declination of the radio source in the selected equinox. This was given in J2000.0 equatorial coordinates to a precision of 0.01 arcseconds in the original table.
The Galactic Longitude of the radio source.
The Galactic Latitude of the radio source.
The probability that the source is a sidelobe of a nearby bright object. This field is populated only for the 5.5-sigma catalog sources (source_type = 'Primary'). Overall, the catalog authors estimate that about 10% of the 5.5 sigma catalog sources are sidelobes, whereas roughly 60% of the 5.0 - 5.5 sigma sources (source_type = 'Faint') are likely to be sidelobes.
The peak flux density of the radio source at 20 cm, in mJy.
The integrated flux density of the radio source at 20 cm, in mJy.
The computed RMS in the map at the source position, in mJy.
The major axis, in arcseconds, derived from an elliptical Gaussian fit to the radio source.
The minor axis, in arcseconds, derived from an elliptical Gaussian fit to the radio source.
The position angle, in degrees, derived from an elliptical Gaussian fit to the radio source.
The name of the field containing the source.
This source flag parameter has the following values:
o = in their original catalog (Zoonematkermani et al. 1990, Cat. <J/ApJS/74/181>; Helfand et al. 1992ApJS...80..211H); OH = not continuum sources but instead are detected through their 1611 MHz OH maser emission (Becker, White & Proctor 1992AJ....103..544B).
As noted above, this HEASARC table contains both the primary 20-cm catalog of 5084 compact sources detected at a significance of > 5.5 sigma (which was contained in Table 3 of the published paper) and the faint source catalog of 1835 20-cm sources that were detected at a significance between 5.0 and 5.5 sigma (listed in Table 4 of the paper). The HEASARC has created this a new parameter, which is set to 'Primary' for the former sources and to 'Faint' for the latter sources.