IRASPSCZ ivo://nasa.heasarc/iraspscz NASA/GSFC HEASARC Saunders et al. 2026-10-02 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source The IRAS Point Source Catalog Redshift (PSCz) Survey consists of redshifts, infrared and optical photometry, and assorted other information for 18351 IRAS sources, mostly selected from the Point Source Catalog. The survey was designed to select almost all galaxies with flux brighter than 0.595 Jy at 60 microns (µm), over the 84% of the sky with extinction small enough that reliable and complete optical identification and spectroscopy was possible. Some of the sources are not galaxies and some are multiple entries for the same galaxy as described in the reference paper. There are in total 15,411 galaxies or possible galaxies, for which redshifts are available for 14,677. The galaxies without redshift are mostly distant or at low latitude, as described in the paper. Many of these galaxies have now been observed as part of the BTP project (Saunders et al 1999, astro-ph/9909174 "The Behind the Plane Survey"), and their redshifts were to be included in future revisions of this catalog. The full catalog for the PSCz Catalog contains more than 120 parameters and is available at the CDS in the directory <a href="http://cdsarc.u-strasbg.fr/ftp/cats/VII/221/">http://cdsarc.u-strasbg.fr/ftp/cats/VII/221/</a> as the files pscz.dat (18,351 sources in the main catalog) and psczcg.dat (60 additional sources close to the coverage gap). There is also a 'short' version of the catalog, psczvs.dat and psczcgvs.dat, containing 19 parameters, sufficient information for most studies. They correspond to the version 2.2. Many fields are taken directly from the IRAS Point Source Catalogue (CDS Cat. II/125). See the IRAS Explanatory Supplement (Beichman et al., 1988, NASAR, 1190, 1) for more information. If there are problems that cannot be resolved by careful reading of these notes or the accompanying paper, please contact Will Saunders <will@roe.ac.uk> or Will Sutherland <W.Sutherland1@physics.ox.ac.uk>. This table was created by the HEASARC in February 2014 based on <a href="https://cdsarc.cds.unistra.fr/ftp/cats/VII/221">CDS Catalog VII/221</a> files psczvs.dat (the 'Main' sample) and psczcgvs.dat (the 'Near-gap' sample), comprising the 'Short' version of the PSCz Catalog. This is a service provided by NASA HEASARC . 2000MNRAS.317...55S https://heasarc.gsfc.nasa.gov/W3Browse/all/iraspscz.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=iraspscz& GET text/xml 180 99999 true 25.35911804 -89.33441999 0.25 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=iraspscz GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_iraspscz&Action=More+Options&Action=Parameter+Search&ConeAdd=1 GALAXY CATALOG 0.25 Infrared Optical public iraspscz IRAS Point Source Catalog Redshift (PSCz) Catalog name PSCz Source Designation meta.id;meta.main char nullable alt_name Alternative Optical Source Designation meta.id char nullable ra Right Ascension degree pos.eq.ra;meta.main double nullable dec Declination degree pos.eq.dec;meta.main double nullable flux_60um Flux at 60-Micron Jy phot.flux.density;em.IR.30-60um double nullable radial_velocity Best Available Heliocentric Velocity km/s spect.dopplerVeloc int nullable radial_velocity_error Uncertainty in Heliocentric Velocity km/s stat.error;spect.dopplerVeloc short nullable ref_radial_velocity Reference for heliocentric Velocity meta.ref;spect.dopplerVeloc short nullable hex_hsd_flag High Source Density Flag, Hexadecimal Encoded meta.code char nullable lune_bin_bmag_extinction Estimated Average B Extinction for That Lune Bin mag phys.absorption;em.opt.B double nullable lune_bin_100_um_bck 100-Micron Background for That Lune Bin MJy/sr phot.flux.sb;instr.background;phot.flux.density;em.IR.60-100um short nullable redshift_status Flag Indicates Redshift Status meta.code;spect.dopplerVeloc char nullable source_sample Field Indicates Published Table/Sample from Which the Entry Originates meta.ref;meta.table char nullable ratio_100_to_60_um_flux Ratio of 100-Micron/60-Micron Flux (Negative Means Upper Limit at 100-Micron) phot.flux.density;em.IR.60-100um;em.IR.30-60um;arith.ratio double nullable lii Galactic Longitude degree pos.galactic.lon double nullable source_type Source Category src.class char nullable optical_class_code Optical Classification Code src.class char nullable bii Galactic Latitude degree pos.galactic.lat double nullable lune_bin_number Lune Bin meta.number;obs int nullable class Browse Object Classification src.class short nullable number_hcon_coverages Flag Indicates 2 or >=3 Hours Confirmed Coverages for This Lune Bin meta.number;obs char 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