J/AJ/122/866ivo://CDS.VizieR/J/AJ/122/866doi:10.26093/cds/vizier.51220866CDSPreibisch T.Zinnecker H.2023-04-06T16:50:46Z2001-10-10T15:40:49ZCDS support team

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

cds-question@unistra.fropen-star-clustersx-ray-sourcesWe have obtained a deep (53 ks) X-ray image of the very young stellar cluster IC 348 with the Advanced CCD Imaging Spectrometer on board the Chandra X-Ray Observatory. In our image with a sensitivity limit of ~1x10^28^ergs/s (more than 10 times deeper than our ROSAT images of IC 348), 215 X-ray sources are detected. While 115 of these sources can be identified with known cluster members, 58 X-ray sources are most likely new, still unidentified cluster members. About 80% of all known cluster members with masses between ~0.15 and 2M_{sun}_ are visible as X-ray sources in our image. We discover X-ray emission at levels of ~10^28^ergs/s from four of 13 known brown dwarfs and from three of 12 brown dwarf candidates in IC 348. We also detect X-ray emission from two deeply embedded objects, presumably class I protostars, south of the cluster center. Description:2001AJ....122..866Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/122/866CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/324/549 : Deep UVBRI photometry in IC 348 (Trullols+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/122/866https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/122/866http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/122/866https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/122/866https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/122/866http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/122/866GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/122/866/table1 (ACIS X-ray Sources in IC 348)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/122/866/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/122/866/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/122/866/table1?GETtext/xml+votable180.050000true55.945791732.22227780.005555555555555556Cone search capability for table J/AJ/122/866/table2 (Brown dwarfs and brown dwarfs candidates in IC 348)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/122/866/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/122/866/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/122/866/table2?GETtext/xml+votable180.050000true56.123083332.01477780.005555555555555556Chandra6/1539https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/122/866?format=asciiX-raydefaultJ/AJ/122/866/table1ACIS X-ray Sources in IC 348recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCXOPZSource numbermeta.id;meta.mainintRAJ2000Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.maine_RAsRight Ascension position uncertaintyarcsecstat.errorfloate_DEsDeclination position uncertaintyarcsecstat.errorfloatCRCount ratect/ksphot.count;em.X-rayfloate_CRError in CRct/ksstat.errorfloatJ/AJ/122/866/table2Brown dwarfs and brown dwarfs candidates in IC 348recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintOriginL99: Objects from Luhman, 1999ApJ...525..466L N00: Additional objects from Najita et al., 2000ApJ...541..977Nmeta.refcharObjectObject identification (1)meta.id;meta.maincharSpTypeSpectral typesrc.spTypechare_SpType? Uncertainty on sub-typestat.errorfloatnullableClassClassification (2)src.classcharAVmagAbsorption in V bandmagphys.absorptionfloatu_AVmagUncertainty flag on AVmagmeta.code.errorcharLbolBolometric luminositysolLumphys.luminosityfloatl_Massl[~< ] Limit flag on Masslmeta.code.errorcharMasslMass, lower limit (3)solMassphys.massfloatMassu? Mass, upper limit (3)solMassphys.massfloatnullablel_ACISLimit flag on ACISmeta.code.errorcharACISNumber of background-subtracted source counts detected in the ACIS imagectphot.count;em.X-rayfloate_ACIS? rms uncertainty on ACISstat.errorfloatnullablel_LxLimit flag on Lxmeta.code.errorcharLxX-ray luminosity (4)1e+21Wphys.luminosity;em.X-rayfloate_Lx? rms uncertainty on Lx1e+21Wstat.errorfloatnullablel_log(Lx/Lbol)Limit flag on log(Lx/Lbol)meta.code.errorcharlog(Lx/Lbol)X-ray to bolometric luminosity ratiophys.luminosity;arith.ratiofloatRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main