IDEOS redshift catalogue J/MNRAS/455/1796 ivo://CDS.VizieR/J/MNRAS/455/1796 doi:10.26093/cds/vizier.74551796 CDS Hernan-Caballero A. Spoon H.W.W. Lebouteiller V. Rupke D.S.N.,Barry D.P. 2024-08-15T20:16:40Z 2016-10-06T14:09:59Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr galaxies infrared-sources redshifted This is the first of a series of papers on the Infrared Database of Extragalactic Observables from Spitzer (IDEOS). In this work, we describe the identification of optical counterparts of the infrared sources detected in Spitzer Infrared Spectrograph (IRS) observations and the acquisition and validation of redshifts. The IDEOS sample includes all the spectra from the Cornell Atlas of Spitzer/IRS Sources (CASSIS, Lebouteiller et al., 2011ApJS..196....8L, 2015ApJS..218...21L) of galaxies beyond the Local Group. Optical counterparts were identified from correlation of the extraction coordinates with the NASA Extragalactic Database (NED). To confirm the optical association and validate NED redshifts, we measure redshifts with unprecedented accuracy on the IRS spectra ({sigma}({Delta}z/(1+z))~0.0011) by using an improved version of the maximum combined pseudo-likelihood method (MCPL). We perform a multistage verification of redshifts that considers alternate NED redshifts, the MCPL redshift, and visual inspection of the IRS spectrum. The statistics is as follows: the IDEOS sample contains 3361 galaxies at redshift 0<z<6.42 (mean: 0.48, median: 0.14). We confirm the default NED redshift for 2429 sources and identify 124 with incorrect NED redshifts. We obtain IRS-based redshifts for 568 IDEOS sources without optical spectroscopic redshifts, including 228 with no previous redshift measurements. We provide the entire IDEOS redshift catalogue in machine-readable formats. The catalogue condenses our compilation and verification effort, and includes our final evaluation on the most likely redshift for each source, its origin, and reliability estimates. 2016MNRAS.455.1796H https://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/455/1796 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service related-to http://cassis.sirtf.com/atlas : CASSIS Home Page http://ideos.astro.cornell.edu/redshifts.html : IDEOS redshift catalogue https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/455/1796 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/455/1796 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/455/1796 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/455/1796 https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/455/1796 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/455/1796 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/MNRAS/455/1796/tableb1 (IDEOS redshift table) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/455/1796/tableb1? https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/455/1796/tableb1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/455/1796/tableb1? 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https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/455/1796?format=ascii Optical Infrared default J/MNRAS/455/1796/tableb1 IDEOS redshift table recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int AOR_ID AOR + Cluster ID meta.id;meta.main char RASdeg Requested right ascension of Spitzer/IRS observation (J2000) deg pos.eq.ra DESdeg Requested declination of Spitzer/IRS observation (J2000) deg pos.eq.dec RAJ2000 Right ascension of CASSIS extracted source (J2000) (1) deg pos.eq.ra;meta.main DEJ2000 Declination of CASSIS extracted source (J2000) (1) deg pos.eq.dec;meta.main NEDname NED name of source in zfinal table meta.id char zfinal Final, best redshift for the source src.redshift;pos.heliocentric double r_zfinal Origin of best redshift (2) meta.ref;pos.frame char q_zfinal Verification status for the redshift (3) meta.code.qual char zNED Default NED redshift src.redshift;pos.heliocentric double zNEDtype Type of default NED redshift (4) meta.note char zMCPL Redshift from IRS spectrum (maximum combined pseudo-likelihood method (MCPL) algorithm) src.redshift;pos.heliocentric double gamma gamma parameter for zMCPL redshift (5) stat.param double R R parameter for zMCPL redshift (5) stat.fit.param float A ? Reliability of zMCPL redshift (A=gamma+log10(R)/2) stat.fit.param float nullable n_A [i] i for -infinity meta.note char P005 Outlier probability for zMCPL at delta=0.005 threshold, P_0.005_(A) (6) stat.fit.goodness double P05 Outlier probability for zMCPL at delta=0.05 threshold, P_0.05_(A) (7) stat.fit.goodness double zNEDalt ? Alternate NED redshift (preferred value) src.redshift;pos.heliocentric double nullable zNEDalttype [SPEC ? -] Type of alternate NED redshift meta.note char zIRSalt ? Alternate IRS redshift (MCPL algorithm) src.redshift;pos.heliocentric double nullable order [0/20]? Order number of IRS redshift solution by decreasing realiability meta.number int nullable Pmulti ? Probability of agreement by chance between zIRS and zNED stat.fit.goodness double nullable Qf [1/3]? Quality flag of zfinal redshift (8) meta.code.qual;src.redshift int nullable NED Simbad column added by the CDS meta.ref.url char