Parkes ivo://nasa.heasarc/pkscat90 NASA/GSFC HEASARC Wright, Otrupcek 2026-06-19 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source PKSCAT90 is the Parkes Catalog (1990) and consists of radio and optical data for 8,264 radio sources. It covers essentially all the sky south of declination +27 degrees but largely excludes the Galactic Plane and the Magellanic Cloud regions. The latter zones have been the subject of other, specialist surveys. A few data errors in Version 1.00 have been corrected in the present edition (see below). This version of the Parkes Radio Source Catalog is entitled "PKSCAT90 Version 1.01." The original Parkes radio catalog was compiled from major radio surveys with the Parkes radiotelescope at frequencies of 408 MHz and 2700 MHz. This work spanned a period of nearly 20 years and was undertaken largely by John Bolton and his colleagues. Since then, improved positions, optical identifications, and redshifts have been obtained for many of the sources in the catalog. Furthermore, flux densities at several frequencies have supplemented the original surveys so that the measurements now cover the frequency range 80-22,000 MHz. However, coverage at the highest frequencies is still sparse. Important contributions to the usefulness of the catalog have been radio data from the Molonglo 408-MHz survey and the 80-MHz Culgoora measurements of Slee et al. PKSCAT90 should thus be regarded as a compendium of radio and optical data about southern radio sources. However, at the moment, it contains only sources originally found in the Parkes 2700-MHz survey (see e.g. Part 14, Bolton et al, 1979, Aust J Phys, Astrophys Suppl, No. 46 and references therein.) The original radio survey data of the catalog and the optical identifications have been published in a series of papers in the Australian Journal of Physics (see above reference). The associated optical spectral data on which redshifts were obtained has also been published, mainly in Astrophysical Journal and Monthly Notices of the Royal Astronomical Society. About the completeness levels of the catalog in various parts of the sky: users should note that the sky zone between -4 and +4 degrees has been the subject of a re-survey and is now complete to 0.25 Jy. The author Alan Wright notes that "PKSCAT90 was produced at a time when relational databases were in their infancy. In the future we anticipate making the individual data sources available separately -- through such search systems as SIMBAD -- rather than in an 'omnibus' catalog like PKSCAT90. For both the Northern and Southern hemispheres, superior and deeper finding surveys now exist: the 87GB catalog in the North (Gregory and Condon et al. 1991, ApJ, 75, 1011, <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VIII/14">CDS Catalog VIII/14</a>) and the PMN catalogs (Griffith and Wright 1993, AJ, 105, 1666, <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VIII/38">CDS Catalog VIII/38</a>, available at the HEASARC as the PMN table) in the South." This table was updated by the HEASARC in July 2015 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VIII/15">CDS Catalog VIII/15</a> file pkscat90.dat, replacing a version based on the original (version 1) PKSCAT90, which was created in 1995. It was further updated in September 2015 as noted in the "Version 1.01 Modifications" section above. This is a service provided by NASA HEASARC . 1990PKS...C......0W https://heasarc.gsfc.nasa.gov/W3Browse/all/pkscat90.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=pkscat90& GET text/xml 180 99999 true 104.84875 -89.13444444 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=pkscat90 GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_pkscat90&Action=More+Options&Action=Parameter+Search&ConeAdd=1 RADIO CATALOG 0.25 Radio public pkscat90 Parkes Southern Radio Source Catalog, Version 1.01 name J2000 Source Designation meta.id;meta.main char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable app_mag Apparent Magnitude mag phot.mag;em.opt double nullable ident Identification src.class char nullable redshift Redshift src.redshift double nullable flux_408_mhz Flux Density at 408 MHz mJy phot.flux.density;em.radio.400-750MHz double nullable flux_2700_mhz Flux Density at 2700 MHz (11 cm) mJy phot.flux.density;em.radio.1500-3000MHz double nullable flux_5000_mhz Flux Density at 5000 MHz (6 cm) mJy phot.flux.density;em.radio.3-6GHz double nullable "__x_ra_dec" System unit vector column double nullable "__y_ra_dec" System unit vector column double nullable "__z_ra_dec" System unit vector column double nullable "__row" System index column char nullable refs_redshift Comma-Separated References for Redshift meta.ref;src.redshift char nullable class Browse Object Classification src.class short nullable bname B1950 Source Designation meta.id char nullable flux_635_mhz Flux Density at 635 MHz mJy phot.flux.density;em.radio.400-750MHz double nullable opt_spect_date Year.Month for Which an Optical Spectrum Was Obtained time.epoch;obs char nullable lii Galactic Longitude degree pos.galactic.lon double nullable flux_80_mhz Flux Density at 80 MHz mJy phot.flux.density;em.radio.20-100MHz double nullable alt_name Alias/Other Catalog Designation meta.id.assoc char nullable refs_ident Comma-Separated References for Identification meta.ref;src.class char nullable flux_1410_mhz Flux Density at 1410 MHz (21 cm) mJy phot.flux.density;em.radio.750-1500MHz double nullable flux_22000_mhz Flux Density at 22000 MHz mJy phot.flux.density;em.radio.12-30GHz double nullable flux_8400_mhz Flux Density at 8400 MHz mJy phot.flux.density;em.radio.6-12GHz double nullable flux_178_mhz Flux Density at 178 MHz mJy phot.flux.density;em.radio.100-200MHz double nullable error_radius Positional Accuracy (Read As "Better Than") arcsec stat.error;pos double nullable bii Galactic Latitude degree pos.galactic.lat double nullable