J/ApJ/669/765ivo://CDS.VizieR/J/ApJ/669/765doi:10.26093/cds/vizier.16690765CDSWang J.X.Zheng Z.Y.Malhotra S.Finkelstein S.L.Rhoads J.E.,Norman C.A.Heckman T.M.2010-03-20T14:01:23Z2010-03-20T14:46:36ZCDS support team

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

cds-question@unistra.frx-ray-sourcessurveysapparent-magnitudeThe 174ks Chandra Advanced CCD Imaging Spectrometer exposure of the Large Area Lyman Alpha Survey (LALA) Cetus field is the second of the two deep Chandra images on LALA fields. In this paper we present the Chandra X-ray sources detected in the Cetus field, along with an analysis of X-ray source counts, stacked X-ray spectrum, and optical identifications. A total of 188 X-ray sources were detected: 174 in the 0.5-7.0keV band, 154 in the 0.5-2.0keV band, and 113 in the 2.0-7.0keV band. The X-ray source counts were derived and compared with LALA field (172ks exposure).2007ApJ...669..765Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/669/765CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-)J/AJ/127/213 : LALA Bootes field X-ray source catalog (Wang+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/669/765https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/669/765http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/669/765https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/669/765https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/669/765http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/669/765GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/669/765/table1 (Chandra sources in LALA Cetus field)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/669/765/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/669/765/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/669/765/table1?GETtext/xml+votable180.050000true31.24125-5.0853890.0055555555555555566/17699 17702https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/669/765?format=asciiX-raydefaultJ/ApJ/669/765/table1Chandra sources in LALA Cetus fieldrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[WZM2007]Sequential numbermeta.recordintCXOLALA2CXOLALA2 designation (JHHMMSS.s+DDMMSS.s)meta.idcharm_CXOLALA2[X] Multiplicity index on CXOLALA2meta.code.multipcharRAJ2000Right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Declination (J2000) (1)pos.eq.dec;meta.mainePos3{sigma} uncertainties of the centroid positions directly given by WAVDETECTarcsecstat.errorfloatTctsTotal band (0.5-10keV) net countsctphot.count;em.X-rayfloatE_TctsError on Tcts (upper limit)ctstat.error;stat.maxfloate_TctsError on Tcts (lower limit)ctstat.errorfloatSctsSoft band (0.5-2keV) net countsctphot.count;em.X-rayfloatE_SctsError on Scts (upper limit)ctstat.error;stat.maxfloate_SctsError on Scts (lower limit)ctstat.errorfloatHctsHard band (2-10keV) net countsctphot.count;em.X-rayfloatE_HctsError on Hcts (upper limit)ctstat.error;stat.maxfloate_HctsError on HCts (lower limit)ctstat.errorfloatDet[TSH ] Band detections (2)instr.bandpasscharHRHardness ratio (HR=(H-S)/(H+S)) (3)phot.flux;arith.ratiofloatE_HRError on HR (upper limit)stat.error;stat.maxfloate_HRError on HR (lower limit)stat.errorfloatS0.5-10Flux density in total band (0.5-10keV) (4)aW.m**-2phot.flux;em.X-rayfloatl_S0.5-2Limit flag on S0.5-2meta.code.errorcharS0.5-2Flux density in soft band (0.5-2keV) (4)aW.m**-2phot.flux;em.X-rayfloatl_S2-10Limit flag on S2-10meta.code.errorcharS2-10Flux density in hard band (2-10keV) (4)aW.m**-2phot.flux;em.X-rayfloatoRA? Offset in right ascension of the detected optical counterpart (RA_O_-RA_X_)arcsecpos.eq.ra;arith.difffloatnullableoDE? Offset in declination of the detected optical counterpart (DE_O_-DE_X_)arcsecpos.eq.dec;arith.difffloatnullablel_r'magLimit flag on rmeta.code.errorcharr'mag? r'-band AUTO magnitude from SExtractor (5)magphot.mag;em.opt.Rfloatnullablee_r'mag? rms uncertainty on r'magmagstat.error;phot.mag;em.opt.Rfloatnullablen_r'magNote on r'mag (6)meta.notechar