J/ApJ/701/811ivo://CDS.VizieR/J/ApJ/701/811doi:10.26093/cds/vizier.17010811CDSTomsick J.A.Chaty S.Rodriguez J.Walter R.Kaaret P.2017-09-29T09:02:35Z2011-10-03T15:02:29ZCDS support team

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

cds-question@unistra.frx-ray-sourcesastronomical-object-identificationWe report on 0.3-10keV X-ray observations by the Chandra X-ray Observatory of the fields of 22 sources that were discovered as hard X-ray (20-100keV) sources by the International Gamma-Ray Astrophysics Satellite ("IGR" sources). The observations were made during Chandra's 9th observing cycle, and their purpose is to localize the sources and to measure their soft X-ray spectra in order to determine the nature of the sources. We find very likely Chandra counterparts for 18 of the 22 sources.2009ApJ...701..811Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/701/811CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-)J/A+A/523/A61 : INTEGRAL all-sky survey of hard X-ray sources (Krivonos+,J/A+A/484/783 : Spectroscopy of 7 INTEGRAL X-ray sources (Chaty+, 2008)J/ApJS/170/175 : Third IBIS/ISGRI soft gamma-ray survey catalog (Bird+, 2007)J/A+A/467/585 : Sources detected by ISGRI (Bodaghee+, 2007)J/A+A/411/L59 : INTEGRAL reference catalog (Ebisawa+, 2003)http://www.isdc.unige.ch/integral/science/catalogue : INTEGRAL science datahttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/701/811https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/701/811http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/701/811https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/701/811https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/701/811http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/701/811GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/701/811/table1 (Chandra observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/701/811/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/701/811/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/701/811/table1?GETtext/xml+votable180.050000true112.3752-13.16230.005555555555555556Cone search capability for table J/ApJ/701/811/table2 (Chandra candidate counterparts to IGR sources)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/701/811/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/701/811/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/701/811/table2?GETtext/xml+votable180.050000true112.400125-13.16969440.0055555555555555565/7204 6/12973 12975 12984 12986 21554 21555 28805 28809 28874 28884 28896 28924 29114 29253 29508 29509 30269 30312 30670 37233 38448 41565 41583 41594 41653 41669 41696 41736 41768 42167 42365 42508https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/701/811?format=asciiX-raydefaultJ/ApJ/701/811/table1Chandra observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIGRIGR name (JHHMMm+DDMM)meta.id;meta.maincharprimaryObsIDChandra observation numbermeta.numberintGLONGalactic longitude in degreesdegpos.galactic.lonGLATGalactic latitude in degreesdegpos.galactic.latObsDateDate of observationtime.epochnullableObsTimeStart time of observationhtime.start;obsfloatExpTExposure timestime.duration;obs.exposureintSimbadSimbad column added by the CDSmeta.refchar_RA.icrsRight ascension (ICRS) (computed by VizieR, not part of the original data)degpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) (computed by VizieR, not part of the original data)degpos.eq.decnullableindexedJ/ApJ/701/811/table2Chandra candidate counterparts to IGR sourcesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIGRIGR source name (JHHMMm+DDMM)meta.id;meta.maincharCXOUChandra source name (JHHMMSS.s+DDMMSS)meta.id.crosscharthetaAngular distance from {gamma}-ray source (1)arcminpos.angDistancefloatRAJ2000X-ray hour of Right Ascension (J2000) (2)pos.eq.ra;meta.mainDEJ2000X-ray degree of Declination (J2000) (2)pos.eq.dec;meta.mainCtsChandra/ACIS observed counts in the 20-40keVctphot.count;em.X-rayfloatHR? Hardness ratio (3)phot.flux;arith.ratiofloatnullablee_HR? Uncertainty in HRstat.errorfloatnullable