J/ApJS/165/19ivo://CDS.VizieR/J/ApJS/165/19doi:10.26093/cds/vizier.21650019CDSEckart M.E.Stern D.Helfand D.J.Harrison F.A.Mao P.H.Yost S.A.2017-09-19T14:23:48Z2008-03-04T15:34:45ZCDS support team

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

cds-question@unistra.frsurveysx-ray-sourcesredshiftedphotometryWe present the catalog of 477 spectra from the Serendipitous Extragalactic X-ray Source Identification (SEXSI) program, a survey designed to probe the dominant contributors to the 2-10keV cosmic X-ray background. Our survey covers 1deg^2^ of sky to 2-10keV fluxes of 1x10^-14^ergs/cm^2^/s, and 2deg^2^ for fluxes of 3x10^-14^ergs/cm^2^/s. Our spectra reach to R-band magnitudes of ~<24 and have produced identifications and redshifts for 438 hard X-ray sources.2006ApJS..165...19Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/165/19CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/596/944 : SEXSI catalog. I (Harrison+, 2003)J/ApJS/156/35 : SEXSI catalog. II (Eckart+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/165/19https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/165/19http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/165/19https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/165/19https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/165/19http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/165/19GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/165/19/table2 (SEXSI Optical Spectroscopy Catalog)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/165/19/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/165/19/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/165/19/table2?GETtext/xml+votable180.050000true35.42812542.44819440.0055555555555555566/24 1128 1129 2388 2389 2409 2411 3389 6495 7178 7273 8268 9272 10037 10080 10344 10345 10387 10589 10743 10888 11460 11461 11605 11632 16276 18780 18782 18878 19220 22959 25769 28479 49125 49127https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/165/19?format=asciiX-rayOpticaldefaultJ/ApJS/165/19/notesSpectral notesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteNote codemeta.notecharTextText of the notemeta.notecharJ/ApJS/165/19/table2SEXSI Optical Spectroscopy CatalogrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCXOSEXSIThe IAU-registered name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharOAAOff-axis anglearcmininstr.offsetfloatHFluxGalactic extinction corrected hard band (2.0-10keV) flux (in 10^-15^erg/cm^2^/s)aW.m**-2phot.flux;em.X-rayfloatf_HR[0/1] Flag on HR, 1 for lower limit (2)meta.codeintHRHardness ratio (3)phot.flux;arith.ratiofloatOpt[0/6] Optical ID flag (4)meta.codeintRcmag? The Cousins R band magnitudemagphot.mag;em.opt.RfloatnullableRmagLim? Limiting R Magnitude of Imagemagphot.magfloatnullableFX/opt? Log of the X-ray-to-optical flux ratiophot.flux;arith.ratiofloatnullablez? Redshiftsrc.redshiftfloatnullableClass? Object type (5)src.classcharNotes? Spectral footnotes, in notes.dat filemeta.notecharLX? Log of the hard band (2.0-10keV) luminosity in erg/s (6)log(1e-07W)phys.luminosity;em.X-rayfloatnullablef_nH? Unsecure nH value (7)meta.codecharnH? Log of best-fit n_H_ from spectral fit (8)log(cm**-2)phys.columnDensityfloatnullablef_nH.lo? Unsecure nHlo value (7)meta.codecharnH.lo? One {sigma} low value of log10(nH) (8)log(cm**-2)phys.columnDensityfloatnullablef_nH.hi? Unsecure nHhi value (7)meta.codecharnH.hi? One {sigma} high value of log10(nH) (8)phys.columnDensityfloatnullablewl.lo? Lower spectrum wavelength range (9)0.1nminstr.bandwidthintnullablewl.hi? Higher spectrum wavelength range (9)0.1nminstr.bandwidthintnullablePapI-IIDisplay the data from the papers I (2003, Cat. J/ApJ/596/944) and II (2005, Cat. J/ApJS/156/35)meta.ref.urlcharSimbadSimbad column added by the CDScharRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.main