J/AJ/120/1426ivo://CDS.VizieR/J/AJ/120/1426doi:10.26093/cds/vizier.51201426CDSGarmire G.Feigelson E.D.Broos P.Hillenbrand L.A.Pravdo S.H.,Townsley L.Tsuboi Y.2023-04-06T16:50:39Z2001-05-11T15:42:31ZCDS support team

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

cds-question@unistra.frx-ray-sourcesAbout 1000 X-ray emitting young premain-sequence (PMS) stars distributed in mass from ~0.05M_{sun}_ brown dwarfs to a ~50M_{sun}_ O star are detected in an image of the Orion Nebula obtained with the Advanced CCD Imaging Spectrometer (ACIS) on board the Chandra X-Ray Observatory. The sources in the Becklin-Neugebauer/Kleinman-Low region of massive star formation are discussed in detail. Note: A more extensive and accurate list is in preparation, based on more Chandra data which will have more sources and many more columns of information.2000AJ....120.1426Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/120/1426CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/120/1426https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/120/1426http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/120/1426https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/120/1426https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/120/1426http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/120/1426GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/120/1426/table1 (ACIS sources in the ONC)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/120/1426/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/120/1426/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/120/1426/table1?GETtext/xml+votable180.050000true83.667083-5.4452780.005555555555555556Cone search capability for table J/AJ/120/1426/table2 (ACIS sources near the Becklin-Neugebauer (BN) object)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/120/1426/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/120/1426/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/120/1426/table2?GETtext/xml+votable180.050000true83.8042917-5.36688890.0055555555555555566/21438-21439 22805https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/120/1426?format=asciiX-raydefaultJ/AJ/120/1426/table1ACIS sources in the ONCrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintONCSequential number of ACIS source in ONCmeta.id;meta.mainintRAJ2000ACIS source right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000ACIS source declination (J2000.0)pos.eq.dec;meta.mainJ/AJ/120/1426/table2ACIS sources near the Becklin-Neugebauer (BN) objectrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBNSequential number of ACIS source in BN (1)meta.id;meta.mainintRAJ2000ACIS source right ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000ACIS source declination (J2000.0)pos.eq.dec;meta.mainCountsACIS source counts extracted from a 15 circle in the 0.28 keV band with ASCA grades after correction for charge-transfer inefficiency. A background of 2 counts per source has been subtracted.ct/ksphot.count;em.X-rayintlogNH? ACIS source hydrogen column densitylog(cm**-2)phys.columnDensityfloatnullableu_logNHrms uncertainty on logNHmeta.code.errorchartheta? Offset between the ACIS source and its counterpart (2)arcsecpos.angDistancefloatnullableClassCounterpart class (3)src.classcharIDoOptical counterpart designation (4)meta.id.crosscharImag? Optical counterpart I magnitudemagphot.mag;em.opt.IfloatnullableIDiInfrared counterpart designation (4)meta.id.crosscharKmag? Infrared counterpart K magnitudemagphot.mag;em.IR.KfloatnullableNoteIndividual note in notes.dat filemeta.notecharJ/AJ/120/1426/notesIndividual notesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteNotemeta.notecharprimaryTextText of the notemeta.notechar