J/AJ/128/1501ivo://CDS.VizieR/J/AJ/128/1501doi:10.26093/cds/vizier.51281501CDSYang Y.Mushotzky R.F.Steffen A.T.Barger A.J.Cowie L.L.2005-05-12T11:21:28Z2005-05-12T11:20:00ZCDS support team

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

cds-question@unistra.frx-ray-sourcesactive-galactic-nucleiWe present the X-ray catalog and basic results from our Chandra Large Area Synoptic X-ray Survey (CLASXS) of the Lockman Hole-Northwest (LHNW) field. Our nine ACIS-I fields cover a contiguous solid angle of 0.4{deg}^2^ and reach fluxes of 5x10^-16^ergs/cm^2^/s (0.4-2keV) and 3x10^-15^ergs/cm^2^/s (2-8keV). Our survey bridges the gap between ultradeep pencil-beam surveys, such as the Chandra Deep Fields (CDFs), and shallower, large-area surveys, allowing a better probe of the X-ray sources that contribute most of the 2-10keV cosmic X-ray background (CXB). We find a total of 525 X-ray point sources and four extended sources.2004AJ....128.1501Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/128/1501CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/128/1483 : Optical properties of the CLASXS X-ray sample (Steffen+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/128/1501https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/128/1501http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/128/1501https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/128/1501https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/128/1501http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/128/1501GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/128/1501/clasxs (Chandra Source Catalog (tables 2 and 3 of paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/128/1501/clasxs?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/128/1501/clasxs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/128/1501/clasxs?GETtext/xml+votable180.050000true157.7317557.55555560.005555555555555556Chandra6/6073 6075https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/128/1501?format=asciiX-raydefaultJ/AJ/128/1501/clasxsChandra Source Catalog (tables 2 and 3 of paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCLASXSSource identification number (1)intCXCCLASXSSource name (2)charRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.maine_RAsStatistical error in RAsarcsecfloate_DEsStatistical error in DEsarcsecfloatl_SoftLimit flag on SoftcharSoftThe 0.4-2.0keV band flux (3)aW.m**-2floatE_Soft? The upper 1{sigma} Poisson error on SoftaW.m**-2floatnullablee_Soft? The lower 1{sigma} Poisson error on SoftaW.m**-2floatnullablel_HardLimit flag on HardcharHardThe 2.0-8.0keV band flux (3)aW.m**-2doubleE_Hard? The upper 1{sigma} Poisson error on HardaW.m**-2floatnullablee_Hard? The lower 1{sigma} Poisson error on HardaW.m**-2floatnullablel_FullLimit flag on FullcharFullThe 0.4-8.0keV band flux (3)aW.m**-2floatE_Full? The upper 1{sigma} Poisson error on FullaW.m**-2floatnullablee_Full? The lower 1{sigma} Poisson error on FullaW.m**-2floatnullablel_HRLimit flag on HRcharHRHardness ratio (4)floatl_NsoftLimit flag on NsoftcharNsoftNet 0.4-2.0keV band counts (2)ctfloatE_Nsoft? The upper 1{sigma} Poisson error on Nsoftctfloatnullablee_Nsoft? The lower 1{sigma} Poisson error on Nsoftctfloatnullablel_NhardLimit flag on NhardcharNhardNet 2.0-8.0keV band counts (2)ctdoubleE_Nhard? The upper 1{sigma} Poisson error on Nhardctfloatnullablee_Nhard? The lower 1{sigma} Poisson error on Nhardctfloatnullablel_NfullLimit flag on NfullcharNfullNet 0.4-8.0keV band counts (2)ctfloatE_Nfull? The upper 1{sigma} Poisson error on Nfullctfloatnullablee_Nfull? The lower 1{sigma} Poisson error on NfullctfloatnullableTsoftEffective 0.4-2.0keV band exposure timeksfloatThardEffective 2.0-8.0keV band exposure timeksfloatTfullEffective 0.4-8.0keV band exposure timeksfloatFNumLHNW field number where the source has the largest effective areaintDetThe LHNW field detection numbers (3)int