J/AJ/138/227ivo://CDS.VizieR/J/AJ/138/227doi:10.26093/cds/vizier.51380227CDSFeigelson E.D.Martin A.L.McNeill C.J.Broos P.S.Garmire G.P.2012-02-28T09:49:26Z2011-12-28T16:51:32ZCDS support team

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

cds-question@unistra.frmolecular-cloudsh-ii-regionspre-main-sequence-starsx-ray-sourcesThe full stellar population of NGC 6334, one of the most spectacular regions of massive star formation in the nearby Galaxy, has not been well sampled in past studies. We analyze here a mosaic of two Chandra X-ray Observatory images of the region using sensitive data analysis methods, giving a list of 1607 faint X-ray sources with arcsecond positions and approximate line-of-sight absorption. About 95% of these are expected to be cluster members, most lower mass pre-main-sequence stars. Extrapolating to low X-ray levels, the total stellar population is estimated to be 20,000-30,000 pre-main-sequence stars.2009AJ....138..227Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/138/227CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-)J/ApJS/69/99 : NGC6334 centers of star formation JHK photometry (Straw+ 1989)J/A+A/316/102 : JHK Photometry in NGC 6334 (Tapia+, 1996)J/A+A/357/1020 : JHK photometry in NGC 6334 IV (Persi+, 2000)J/ApJ/668/906 : Massive clumps in NGC 6334 (Munoz+, 2007)J/AJ/136/2083 : Clumps in NGC 6334 from 450/850um obs. (Matthews+, 2008)J/A+A/515/A55 : NGC 6334-NGC 6357 complex (Russeil+, 2010)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/138/227https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/138/227http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/138/227https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/138/227https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/138/227http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/138/227GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/138/227/table1 (Chandra catalog of X-ray sources in NGC 6334)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/138/227/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/138/227/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/138/227/table1?GETtext/xml+votable180.050000true259.8149939-36.04042690.0055555555555555565/106148.650015785639275e-20 9.710690472292815e-20https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/138/227?format=asciiX-raydefaultJ/AJ/138/227/table1Chandra catalog of X-ray sources in NGC 6334DEJ2000Declination in decimal degrees (J2000)degpos.eq.dec;meta.mainrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/1607] Running sequence number; sorted by RAmeta.id;meta.mainintCXOUIAU designation (HHMMSS.ss+DDMMSS.s, CXOU J+)meta.id;meta.maincharOffax? Off-axis anglearcmininstr.offsetfloatnullableCtT? Net extracted total 0.5-8keV band countsctphot.count;em.X-rayfloatnullablee_CtT? Average upper and lower 1{sigma} errors on Ctctstat.errorfloatnullableBtT? Expected background total 0.5-8keV band counts (2)ctinstr.background;em.X-ray.mediumfloatnullableCtH? Net extracted hard 2-8keV band countsctphot.count;em.X-rayfloatnullablePSF? Fraction of PSF at 1.5keV enclosed in extraction region (3)instr.det.psf;arith.ratiofloatnullablel_logPbLimit flag on logPbmeta.code.errorcharlogPbLog probability source arises from local background fluctuations (4)stat.fit.goodnessfloatEmed? Background-corrected median photon energy; total bandkeVem.energyfloatnullablel_KsmagLimit flag on Ksmag (5)meta.code.errorcharKsmag? 2MASS/Ks band magnitude (6)magphot.mag;em.IR.Kfloatnullableu_Ksmag[:] Indicates photometric confusion (7)meta.code.errorcharPosIDPossible counterparts (8)meta.id.crosscharRAJ2000Right Ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainePos? Estimated standard deviation of random component of position error (1)arcsecstat.stdevfloatnullable