J/AJ/127/213ivo://CDS.VizieR/J/AJ/127/213doi:10.26093/cds/vizier.51270213CDSWang J.X.Malhotra S.Rhoads J.E.Brown M.J.I.Dey A.Heckman T.M.,Jannuzi B.T.Norman C.A.Tiede G.P.Tozzi P.2023-04-06T16:51:02Z2004-12-05T22:02:54ZCDS support team

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

cds-question@unistra.frx-ray-sourcessurveysapparent-magnitudeWe present an analysis of a deep, 172ks Chandra observation of the Large Area Lyman Alpha survey (LALA) Bootes field, obtained with the Advanced CCD Imaging Spectrometer (ACIS-I) on board the Chandra X-Ray Observatory. This is one of the deepest Chandra images of the extragalactic sky; only the 2Ms Chandra Deep Field North (CDF-N) and 1Ms Chandra Deep Field South (CDF-S) are substantially deeper. In this paper we present the X-ray source catalog obtained from this image, along with an analysis of source counts and optical identifications. The X-ray image is composed of two individual observations obtained in 2002 and reaches 0.5-2.0 and 2.0-10.0keV flux limits of 1.5x10^-16^ and 1.0x10^-15^ergs/cm^2^/s, respectively, for point sources near the aim point. A total of 168 X-ray sources were detected: 160 in the 0.5-7.0keV band, 132 in the 0.5-2.0keV band, and 111 in the 2.0-7.0keV band. Our primary optical data are R-band imaging from the NOAO Deep Wide-Field Survey (NDWFS), with a limiting magnitude of R=25.7 (Vega, 3{sigma}, and 4" diameter aperture).2004AJ....127..213Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/127/213CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 2002-)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/127/213https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/127/213http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/127/213https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/127/213https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/127/213http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/127/213GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/127/213/table1 (CHANDRA Sources in LALA Bootes Field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/127/213/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/127/213/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/127/213/table1?GETtext/xml+votable180.050000true216.584833335.61908330.005555555555555556Chandra6/10515 10518 10521 10524https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/127/213?format=asciiX-raydefaultJ/AJ/127/213/table1CHANDRA Sources in LALA Bootes FieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.int[WMR2004]Source identification numberintCXOLALA1IAU Name (based on J2000 position)charRAJ2000Hour of Right Ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (1)pos.eq.dec;meta.mainPosErrThe 3{sigma} centroid position uncertaintyarcsecfloatTCtsNet total (0.5-7.0keV) counts (2)ctfloatE_TCtsUpper 1{sigma} Poisson uncertainty in TCtsctfloate_TCtsLower 1{sigma} Poisson uncertainty in TCtsctfloatSCtsNet soft (0.5-2.0keV) counts (2)ctfloatE_SCtsUpper 1{sigma} Poisson uncertainty in SCtsctfloate_SCtsLower 1{sigma} Poisson uncertainty in SCtsctfloatHCtsNet hard (2.0-7.0keV) counts(2)ctfloatE_HCtsUpper 1{sigma} Poisson uncertainty in HCtsctfloate_HCtsLower 1{sigma} Poisson uncertainty in HCtsctfloatDetBand of source detection (3)charHRHardness ratio (4)floatE_HRUpper 1{sigma} Poisson uncertainty in HRfloate_HRLower 1{sigma} Poisson uncertainty in HRfloatS0.5-10The 0.5-10 keV Xray flux (5)1e-18W.m**-2floatl_S0.5-2Limit flag on S0.5-2charS0.5-2The 0.5-2 keV Xray flux (5)1e-18W.m**-2floatl_S2-10Limit flag on S2-10charS2-10The 2-10 keV Xray flux (5)1e-18W.m**-2floatoRA? Optical counterpart Right Ascension offset from the Xray position (6)arcsecfloatnullableoDE? Optical counterpart Declination offset from the Xray position (6)arcsecfloatnullablel_RmagThe 3{sigma} limit flag on RmagcharRmag? The R band AUTO magnitude (7)magfloatnullablee_Rmag? The 1{sigma} Uncertainty in Rmagmagfloatnullablef_Rmag[ab] Flag on Rmag (8)charFWHM? Optical counterpart Full-Width Half-Maximum in R band imagearcsecfloatnullable