CLANSOID ivo://nasa.heasarc/clansoid NASA/GSFC HEASARC Trouille et al. 2026-10-09 NASA/GSFC HEASARC help desk heasarc-vo at athena.gsfc.nasa.gov Survey Source This table contains the redshift catalog for the X-ray sources detected in the Chandra Lockman Area North Survey (CLANS). The redshifts for the CLANS field are all new. For fluxes above 10<sup>-14</sup> ergs cm<sup>-2</sup> s<sup>-1</sup> (2-8 keV) the authors have redshifts for 76% of the sources in the CLANS, CLASXS, and CDF-N surveys. They extend the redshift information for the full sample using photometric redshifts. The goal of the OPTX Project is to use these three surveys, which are among the most spectroscopically complete surveys to date, to analyze the effect of spectral type on the shape and evolution of the X-ray luminosity functions and to compare the optical spectral types with the X-ray spectral properties. The optical and infrared photometric catalog for the CLANS X-ray sources is presented here (see the CLANS Browse table for the X-ray information). The CLANS and CLASXS surveys bridge the gap between the ultra-deep pencil-beam surveys, such as the CDFs, and the shallower, very large-area surveys. As a result, they probe the X-ray sources that contribute the bulk of the 2-8 keV X-ray background and cover the flux range of the observed break in the log N - log S distribution. This table was created by the HEASARC in December 2008 based on the electronic version of Table 11 from the paper which was obtained from the ApJ web site. This is a service provided by NASA HEASARC . 2008ApJS..179....1T https://heasarc.gsfc.nasa.gov/W3Browse/all/clansoid.html Catalog Research served-by HEASARC TAP https://heasarc.gsfc.nasa.gov/xamin/vo/cone?showoffsets&table=clansoid& GET text/xml 180 99999 true 161.052 58.539 0.0166666666666667 https://heasarc.gsfc.nasa.gov/xamin/vo/tap https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/getvotable.pl?name=clansoid GET text/xml https://heasarc.gsfc.nasa.gov/cgi-bin/W3Browse/w3query.pl?tablehead=name=heasarc_clansoid&Action=More+Options&Action=Parameter+Search&ConeAdd=1 CHANDRA 0.0166666666666667 Infrared Optical public clansoid Chandra Lockman Area North Survey (CLANS) Optical & IR Catalog name 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 rmag The r-prime Band AB Magnitude mag phot.mag;em.opt.R double nullable jmag The J Band AB Magnitude mag phot.mag;em.IR.J double nullable irac_3p6_um_mag Spitzer 3.6-micron Band AB Magnitude mag phot.mag;em.IR.3-4um double nullable redshift Spectroscopic Redshift src.redshift double nullable phot_redshift Photometric Redshift src.redshift double nullable lii Galactic Longitude degree pos.galactic.lon double nullable source_number Sequential Identification Number for Each Source in Catalog meta.id;src short nullable gmag The g-prime Band AB Magnitude mag phot.mag;em.opt double nullable bii Galactic Latitude degree pos.galactic.lat double nullable kmag The K Band AB Magnitude mag phot.mag;em.IR.K double nullable broad_type Optical Spectral Classification src.class short nullable hmag The H Band AB Magnitude mag phot.mag;em.IR.H double nullable imag The i-prime Band AB Magnitude mag phot.mag;em.opt.I double nullable zmag The z-prime Band AB Magnitude mag phot.mag;em.opt double nullable mips_24_um_mag Spitzer 24-micron Band AB Magnitude mag phot.mag;em.IR.15-30um 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