J/ApJS/209/27ivo://CDS.VizieR/J/ApJS/209/27doi:10.26093/cds/vizier.22090027CDSKuhn M.A.Getman K.V.Broos P.S.Townsley L.K.Feigelson E.D.2017-11-28T13:21:27Z2014-01-22T10:32:14ZCDS support team

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

cds-question@unistra.frx-ray-sourcesh-ii-regionsThe Massive Young star-forming complex Study in Infrared and X-ray (MYStIX) uses data from the Chandra X-Ray Observatory to identify and characterize the young stellar populations in 20 Galactic (d<4kpc) massive star-forming regions. Here, the X-ray analysis for Chandra ACIS-I observations of 10 of the MYStIX fields is described, and a catalog of >10000 X-ray sources is presented. In comparison to other published Chandra source lists for the same regions, the number of MYStIX-detected faint X-ray sources in a region is often doubled. While the higher catalog sensitivity increases the chance of false detections, it also increases the number of matches to infrared stars. X-ray emitting contaminants include foreground stars, background stars, and extragalactic sources. The X-ray properties of sources in these classes are discussed.2013ApJS..209...27Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/209/27CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJS/209/28 : MYStIX Wide-Field NIR data: crowded fields (King+, 2013)J/ApJS/209/29 : MYStIX: MIR observations and catalogs (Kuhn+, 2013)J/ApJS/209/30 : MYStIX project: Bayesian matching (Naylor+, 2013)J/ApJS/209/31 : The MYStIX IR-Excess Source catalog (MIRES) (Povich+, 2013)J/ApJS/209/32 : Probable young stars in the MYStIX project (Broos+, 2013)B/chandra : The Chandra Archive Log (CXC, 1999-2013)J/A+A/539/A74 : NGC1893 Chandra X-ray catalog (Caramazza+, 2012)J/ApJ/747/51 : Lagoon Nebula stars. I. Rotation periods (Henderson+, 2012)J/ApJS/194/2 : Chandra Carina Complex Project (CCCP) catalog (Broos+, 2011)J/ApJ/743/166 : X-ray and infra-red study of RCW 38 (Winston+, 2011)J/ApJ/716/474 : The Rosette star-forming complex. III. (Wang+, 2010)J/ApJ/708/1760 : Flux estimations of faint X-ray sources (Getman+, 2010)J/ApJ/696/47 : Rosette star-forming complex Chandra study. II. (Wang+, 2009)J/AJ/134/999 : X-ray observations of NGC 2264 (Dahm+, 2007)J/A+A/460/133 : Chandra X-ray sources in NGC 2362 (Damiani+, 2006)J/A+A/455/903 : ACIS-I observations of NGC 2264 (Flaccomio+, 2006)J/AJ/132/1100 : X-ray and IR sources in RCW 38 (Wolk+, 2006)J/AJ/127/2659 : CHANDRA observations of NGC 2264 (Ramirez+, 2004)J/ApJ/607/904 : Chandra obs. of Trifid nebula (Rho+, 2004)J/A+A/395/499 : XMM observations in M8 and NGC6530 (Rauw+, 2002)J/ApJ/562/446 : X-rays and protostars in Trifid nebula (Rho+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/209/27https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/209/27http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/209/27https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/209/27https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/209/27http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/209/27GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/209/27/xmystix (*MYStIX X-ray sources and properties)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/209/27/xmystix?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/209/27/xmystix?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/209/27/xmystix?GETtext/xml+votable180.050000true85.3040089-1.91660890.005555555555555556Cone search capability for table J/ApJS/209/27/table1 (Log of Chandra Observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/209/27/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/209/27/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/209/27/table1?GETtext/xml+votable180.050000true85.4429167-1.92463890.0055555555555555566/1285 1287 1296 1298 14682 14704 22243 22249 22854 22855 23637 23639 28890 28891 28913 28915 37872 37884 37886 39907https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/209/27?format=asciiX-raydefaultJ/ApJS/209/27/xmystix*MYStIX X-ray sources and propertiesNobs[1/5] Total number of observations extractedmeta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegName of the MYStIX star-forming region (G1)obs.fieldcharCXOIAU source name (HHMMSS.ss+DDMMSS.s; J2000)meta.id;meta.maincharLabelSource name used within the project (1)meta.id;obscharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainePos[0/3] 1{sigma} error circle around RA,DEarcsecstat.errorfloatPosTypeAlgorithm used to estimate position (2)meta.id;stat.fitcharno-m[0/0.01] merged p-value for no-source hypothesis (smallest of no-t/no-s/no-h) (3)stat.fit.goodnessfloatno-t[0/0.5] p-value for 0.5-8keV no-source hypothesis (3)stat.fit.goodnessfloatno-s[0/1]? p-value for 0.5-2keV no-source hypothesis (3)stat.fit.goodnessfloatnullableno-h[0/1]? p-value for no-source hypothesis in the hard (2-8keV) band (3)stat.fit.goodnessfloatnullableKS-s[0/1]? Smallest p-value under the no-variability null hypothesis within a single-observation (4)stat.fit.goodnessfloatnullableKS-m[0/1]? Smallest p-value under the no-variability null hypothesis over merged observations (4)stat.fit.goodnessfloatnullableExpNom[11844/440602] Total exposure time in merged observationsstime.duration;obsdoubleExpFrac[0/1] Fraction of ExpN that source was observed (5)time.expofloatNph[1/5] Number of observations merged to estimate photometry propertiesmeta.numberintFdis[0/0.9] Fraction of exposure discarded in mergetime.expofloattheta-m[0.07/12.2] Smallest value of {theta}arcmininstr.offsetfloattheta[0.07/12.2] Average off-axis angle {theta} for merged observationsarcmininstr.offsetfloattheta-M[0.07/12.5] Largest value of {theta}arcmininstr.offsetfloatPSFf[0.3/1] Average PSF fraction at 1.5 keV for merged observationsinstr.det.psffloatArea[1/2179] Average aperture area for merged observations in (0.492arcsec)^2^ unitsphys.area;instrfloataglow[0/0.4]? Suspected afterglow fraction (6)stat.fit.paramfloatnullableOct-t[2/34654] Observed 0.5-8keV counts in merged aperturesctphot.count;em.X-rayintOct-s[0/31233] Observed 0.5-2keV counts in merged aperturesctphot.count;em.X-rayintOct-h[0/5668] Observed 2-8keV counts in merged aperturesctphot.count;em.X-rayintbgScl[0.5/10864] Scaling of background extractioninstr.backgrounddoublebgct-t[0/15263] Observed 0.5-8keV counts in merged background regionsctinstr.backgroundintbgct-s[0/14105] Observed 0.5-2keV counts in merged background regionsctinstr.backgroundintbgct-h[0/1527] Observed 2-8keV counts in merged background regionsctinstr.backgroundintNct-t[0.8/34588] Net 0.5-8keV counts in merged aperturesctphot.count;em.X-rayfloatNct-s[-7.1/31173] Net 0.5-2keV counts in merged aperturesctphot.count;em.X-rayfloatNct-h[-11/5667] Net 2-8keV counts in merged aperturesctphot.count;em.X-rayfloatb_Nct-t[0/34402] 1{sigma} lower bound on NCtst (7)ctphot.count;em.X-ray;stat.minfloatB_Nct-t[2/34776] 1{sigma} upper bound on NCtst (7)ctphot.count;em.X-ray;stat.maxfloatb_Nct-s[0/30997]? 1{sigma} lower bound on NCtss (7)ctphot.count;em.X-ray;stat.minfloatnullableB_Nct-s[0/31352] 1{sigma} upper bound on NCtss (7)ctphot.count;em.X-ray;stat.maxfloatb_Nct-h[0/5592]? 1{sigma} lower bound on NCtsh (7)ctphot.count;em.X-ray;stat.minfloatnullableB_Nct-h[0/5743] 1{sigma} upper bound on NCtsh (7)ctphot.count;em.X-ray;stat.maxfloatArea-t[19/247] Mean effective area (ARF value) in cm^2^.count/photon in 0.5-8keV (8)phys.area;instrfloatArea-s[29/360] Mean effective area (ARF value) in cm^2^.count/photon in 0.5-2keV (8)phys.area;instrfloatArea-h[17.3/219] Mean effective area (ARF value) in cm^2^.count/photon in 2-8keV (8)phys.area;instrfloatE-t[0.5/7.5] Median 0.5-8keV energy, observed spectrum (9)keVem.energyfloatE-s[0/2]? Median 0.5-2keV energy, observed spectrum (9)keVem.energyfloatnullableE-h[0/8]? Median 2-8keV energy, observed spectrum (9)keVem.energyfloatnullableXFlx-t[-7.8/-3.1] log incident photon flux in total (0.5-8keV) band (10)log(ph.cm**-2.s**-1)phot.flux;em.X-rayfloatXFlx-s[-11.7/0]? log incident photon flux in soft (0.5-2keV) band (10)log(ph.cm**-2.s**-1)phot.flux;em.X-rayfloatnullableXFlx-h[-10.5/0]? log incident photon flux in hard (2-8keV) band (10)log(ph.cm**-2.s**-1)phot.flux;em.X-rayfloatnullableFlux-h[0/2.5e-12]? 2-8 keV X-ray flux (11)mW.m**-2phot.flux;em.X-raydoublenullableFlxc-h[0/4.7e-12]? Absorption-corrected 2-8 keV X-ray fluxmW.m**-2phot.flux;em.X-raydoublenullablee_Flxc-h[0/3.6e-13]? 1{sigma} statistical uncertainty on Flxc-hmW.m**-2stat.errordoublenullables_Flxc-h[0/4.3e-13]? 1{sigma} systematic uncertainty on Flxc-hmW.m**-2stat.error.sysdoublenullableFlux-t[0/2.6e-12]? 0.5-8 keV X-ray fluxmW.m**-2phot.flux;em.X-raydoublenullableFlxc-t[0/1.1e-11]? Absorption-corrected 0.5-8 kev X-ray fluxmW.m**-2phot.flux;em.X-raydoublenullablee_Flxc-t[0/8.7e-13]? 1{sigma} statistical uncertainty on Flxc-tmW.m**-2stat.errordoublenullables_Flxc-t[0/1.9e-12]? 1{sigma} systematic uncertainty on Flxc-tmW.m**-2stat.error.sysdoublenullablelogNH[0/24]? Gas column densitycm**-2phys.columnDensityfloatnullablee_logNH[0/1.1]? 1{sigma} statistical uncertainty on logNHcm**-2stat.errorfloatnullables_logNH[0/1.2]? 1{sigma} systematic uncertainty on logNHcm**-2stat.error.sysfloatnullableJ/ApJS/209/27/table1Log of Chandra ObservationsSimbadNameSimbad column added by the CDSmeta.idcharPIPI of the observationobs.observercharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegName of the MYStIX star-forming region (G1)obs.fieldcharprimaryObsID[977/12142] Chandra observation ID numbermeta.id;meta.mainintSeqNumChandra sequence number (see Cat. B/chandra)meta.ref;pos.frameintDateUT start time of the observationstime.start;obsnullableExp[9143/126217] Exposure time (1)stime.duration;obs.exposureintRAJ2000[5/20] Aimpoint hour of RA (J2000) (2)pos.eq.ra;meta.mainDEJ2000[1/47] Aimpoint degree of DEC (J2000) (2)pos.eq.dec;meta.mainRoll[22/351] Roll angle (2)deginstr.offsetintModeObservation mode ("Faint" or "Very Faint")instr.setupchar