J/MNRAS/361/525ivo://CDS.VizieR/J/MNRAS/361/525doi:10.26093/cds/vizier.73610525CDSDoherty M.Bunker A.J.Ellis R.S.McCarthy P.J.2024-07-01T20:15:08Z2017-06-26T06:45:01ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frsurveysgalaxiesinfrared-sourcesinfrared-photometryredshiftedWe present deep Keck spectroscopy, using the Deep Imaging Multi-Object Spectrograph and the Low-Resolution Imaging Spectrometer spectrographs, of a large and representative sample of 67 extremely red objects (EROs) to H=20.5 in three fields (SSA22, Chandra Deep Field South and NTT Deep Field) drawn from the Las Campanas Infrared Survey (LCIRS). Using the colour cut (I-H)>3.0 (Vega magnitudes) adopted in earlier papers in this series, we verify the efficiency of this selection for locating and studying distant old sources. Spectroscopic redshifts are determined for 44 sources, of which only two are contaminating low-mass stars. When allowance is made for incompleteness, the spectroscopic redshift distribution closely matches that predicted earlier on the basis of photometric data.2005MNRAS.361..525Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/361/525CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toVII/228 : Las Campanas Infrared Survey (Chen+, 2001-2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/361/525https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/361/525http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/361/525https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/361/525https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/361/525http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/361/525GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/361/525/table2 (The CDF-S sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/361/525/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/361/525/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/361/525/table2?GETtext/xml+votable180.050000true53.0624167-27.70694440.005555555555555556Cone search capability for table J/MNRAS/361/525/table3 (The NTT sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/361/525/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/361/525/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/361/525/table3?GETtext/xml+votable180.050000true181.0947083-7.5210.005555555555555556Cone search capability for table J/MNRAS/361/525/table4 (The SSA22 sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/361/525/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/361/525/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/361/525/table4?GETtext/xml+votable180.050000true334.45420830.37063890.0055555555555555566/19033 19036 25540 25542 359351.143914381504295e-19 1.2934455535160846e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/361/525?format=asciiOpticalInfrareddefaultJ/MNRAS/361/525/table2The CDF-S samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[DBE2005]Sequential number, CDFS INNNN (1)meta.recordcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainImagI magnitudemagphot.mag;em.opt.IfloatHmagH magnitudemagphot.mag;em.IR.HfloatInstInstrumentmeta.id;instrcharz? Redshiftsrc.redshiftfloatnullableq_zRedshift quality flag (G1)meta.code.qual;src.redshiftcharTypeNature of the objectmeta.code.classcharComCommentsmeta.notecharJ/MNRAS/361/525/table3The NTT samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[DBE2005]Sequential number, NTT NNNNmeta.recordcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainImagI magnitudemagphot.mag;em.opt.IfloatHmagH magnitudemagphot.mag;em.IR.HfloatI-HI-H colour indexmagphot.color;em.IR;em.IRfloatz? Redshiftsrc.redshiftfloatnullableq_zRedshift quality flag (G1)meta.code.qual;src.redshiftcharTypeNature of the objectmeta.code.classcharComCommentsmeta.notecharJ/MNRAS/361/525/table4The SSA22 samplerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[DBE2005]Sequential number, SSA22 NNNNmeta.recordcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainImagI magnitudemagphot.mag;em.opt.IfloatHmagH magnitudemagphot.mag;em.IR.HfloatMaskMask numbermeta.id;instrintz? Redshiftsrc.redshiftfloatnullableq_zRedshift quality flag (G1)meta.code.qual;src.redshiftcharTypeNature of the objectmeta.code.classchar