J/ApJS/244/28ivo://CDS.VizieR/J/ApJS/244/28doi:10.26093/cds/vizier.22440028CDSTownsley L.K.Broos P.S.Garmire G.P.Povich M.S.2020-09-01T06:40:07Z2020-06-05T12:53:33ZCDS support team

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

cds-question@unistra.frstar-forming-regionsh-ii-regionsx-ray-sourcesWe offer to the star formation community the third installment of the Massive Star-forming Regions (MSFRs) Omnibus X-ray Catalog (MOXC3), a compilation of X-ray point sources detected in 50 archival Chandra Advanced CCD Imaging Spectrometer observations of 14 Galactic MSFRs and surrounding fields. The MOXC3 MSFRs are NGC2264, NGC6193, RCW108-IR, AurOB1, DR15, NGC6231, Berkeley87, NGC6357, AFGL4029, hPer (NGC869), NGC281, Onsala2S, G305, and RCW49 (Wd2); they have distances of 0.7-4.2kpc. Most exhibit clumped or clustered young stellar populations; several contain at least two distinct massive young stellar clusters. The total MOXC3 catalog includes 27923 X-ray point sources. We take great care to identify even the faintest X-ray point sources across these fields. This allows us to remove this point source light, revealing diffuse X-ray structures that pervade and surround MSFRs, often generated by hot plasmas from massive star feedback. As we found in MOXC1 and MOXC2, diffuse X-ray emission is traceable in all MOXC3 MSFRs; here we perform spectral fitting to investigate the origins of selected diffuse regions. Once again, MOXC3 shows the value of high spatial resolution X-ray studies of MSFRs enabled by Chandra.2019ApJS..244...28Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/244/28CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/chandra : The Chandra Archive Log (CXC, 1999-2014)IX/45 : The Chandra Source Catalog, Release 1.1 (Evans+ 2012)III/274 : Galactic O-Star Spectroscopic Survey (GOSSS) (Sota+, 2014)I/337 : Gaia DR1 (Gaia Collaboration, 2016)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)IX/57 : The Chandra Source Catalog (CSC), Release 2.0 (Evans+, 2019)VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)J/A+A/400/533 : New IR star clusters in southern Milky Way (Dutra+, 2003)J/ApJS/160/319 : COUP: observations and source lists (Getman+, 2005)J/A+A/455/903 : ACIS-I observations of NGC 2264 (Flaccomio+, 2006)J/A+A/454/1047 : XMM view of NGC 6231 open cluster (Sana+, 2006)J/MNRAS/372/661 : XMM view of NGC 6231: OB stars (Sana+, 2006)J/A+A/468/353 : XMM-Newton Extended Survey of Taurus (Guedel+, 2007)J/A+A/463/981 : BV CCD photometry in Westerlund 2 (Rauw+, 2007)J/ApJ/665/719 : X-ray imaging of RCW 49 (Tsujimoto+, 2007)J/ApJS/168/100 : X-ray study of star-forming region NGC 6357 (Wang+, 2007)J/ApJ/688/1142 : Star formation in W5: Spitzer observations (Koenig+, 2008)J/MNRAS/386/447 : RV catalogue of O-type stars in NGC 6231 (Sana+, 2008)J/AJ/135/693 : X-ray and IR sources in RCW 108 (Wolk+, 2008)J/MNRAS/398/221 : UBVIJHK photom. towards (l=305{deg},b=0{deg}) (Baume+, 2009)J/AJ/137/3210 : Chandra observations of h Persei (Currie+, 2009)J/ApJS/186/191 : VI photometry & spectroscopy in h+{chi} Per (Currie+, 2010)J/ApJ/708/1760 : Flux estimations of faint X-ray sources (Getman+, 2010)J/A+A/531/A73 : NGC 6167 and NGC 6193 multi-photometry (Baume+, 2011)J/A+A/532/A131 : New Galactic star clusters in VVV survey (Borissova+, 2011)J/ApJS/194/2 : Chandra Carina Complex Project (CCCP) catalog (Broos+, 2011)J/ApJS/194/14 : A Pan-Carina YSO catalog (Povich+, 2011)J/ApJS/194/15 : CCCP: Carina's diffuse X-ray emission (Townsley+, 2011)J/PASJ/64/107 : Multiwavelength study of NGC 281 complex (Sharma+, 2012)J/A+A/555/A50 : UBVIc photometry of stars in Westerlund 2 (Carraro+, 2013)J/MNRAS/435/2003 : G305 star-forming complex in ^13^CO (Hindson+, 2013)J/ApJS/209/27 : MYStIX: the Chandra X-ray sources (Kuhn+, 2013)J/AJ/145/125 : Spectroscopy & HST photom. in Westerlund 2 (Vargas+, 2013)J/AJ/147/82 : Monitoring of disk-bearing stars in NGC 2264 (Cody+, 2014)J/A+A/564/A21 : Ammonia observations in G79.29+0.46 (Rizzo+, 2014)J/ApJS/213/1 : The MSFRs Omnibus X-ray Catalog (MOXC) (Townsley+, 2014)J/MNRAS/446/3797 : Westerlund 2 UBVIc photometry (Hur+, 2015)J/AJ/150/191 : IR photom. of YSOs in Cygnus-X DR15 (Rivera-Galvez+, 2015)J/A+A/589/A113 : PMS stars in h Per (Argiroffi+, 2016)J/A+A/596/A82 : X-ray study of the young cluster NGC6231 (Damiani+, 2016)J/ApJS/224/4 : GOSSS III. Additional O-type systems (Maiz Apellaniz+, 2016)J/MNRAS/455/1275 : Radial velocities of WR21a (Tramper+, 2016)J/ApJ/843/33 : SOFIA Massive Star Formation Survey. I. (De Buizer+, 2017)J/ApJS/229/28 : SFiNCs: X-ray, IR and membership catalogs (Getman+, 2017)J/AJ/154/87 : Stellar population of NGC 6231 (Kuhn+, 2017)J/A+A/608/A95 : GES: multi-line spectroscopic binary cand. (Merle+, 2017)J/ApJ/864/136 : MSFRs multiwavelength study (Binder+, 2018)J/ApJS/235/43 : 2nd MSFRs Omnibus X-ray Catalog (MOXC2) (Townsley+, 2018)J/A+A/618/A93 : Gaia DR2 open clusters in the MW (Cantat-Gaudin+, 2018)J/A+A/615/A148 : Pre-main sequence stars in Scorpius OB1 (Damiani, 2018)J/A+A/620/A55 : Magnetic flaring from PMS stars spectra (Flaccomio+, 2018)J/AJ/157/176 : X-ray emission from Gal. stellar bow shocks (Binder+, 2019)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/244/28https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/244/28http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/244/28https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/244/28https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/244/28http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/244/28GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/244/28/table1 (MOXC3 targets)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/28/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/28/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/28/table1?GETtext/xml+votable180.050000true79.07583334.3122220.005555555555555556Cone search capability for table J/ApJS/244/28/moxc3 (*MOXC3 Chandra point source catalog (see Table 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/28/moxc3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/28/moxc3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/28/moxc3?GETtext/xml+votable180.050000true78.8521234.223461940.005555555555555556Cone search capability for table J/ApJS/244/28/table2 (Log of Chandra observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/244/28/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/244/28/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/244/28/table2?GETtext/xml+votable180.050000true79.087291734.29947220.0055555555555555565/10615 6/1293 1295 3011 3256 3257 3258 3279 3290 3312 14622 14644 14667 14670 14689 14692 23637 23639 37341 37343 38024 38026 41655 42190 42191 42212 42213 42394https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/244/28?format=asciiX-raydefaultJ/ApJS/244/28/table1MOXC3 targetsSimbadNameSimbad column added by the CDSmeta.idcharf_Exp[a] Flag on Exp (5)meta.codecharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMSFRMassive star-forming region namemeta.id;meta.maincharprimaryGLONGalactic longitudedegpos.galactic.lonGLATGalactic latitudedegpos.galactic.latfloatRAJ2000Hour of right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000) (1)pos.eq.dec;meta.mainDist[0.4/4.3] Distance from the literature or estimated in this paper (2)kpcpos.distance;pos.heliocentricfloatr_DistReference(s)meta.ref;pos.framecharScale[0.8/8.6] Image scale assuming "Dist" valuearcmin/pcinstr.scalefloatAv[0.5/20] Average absorption (3)magphys.absorptionfloatu_Exp[~] Uncertainty flag on Expmeta.code.errorcharExpNominal exposure time (4)kstime.duration;obs.exposureintlogLtc[28/30.7]? log of total band (0.5-8keV) luminosity, corrected for extinction (6)log(1e-07W)phys.luminosity;em.X-rayfloatnullableM50[0.1/1.5]? Limiting mass (7)solMassphys.massfloatnullableNx[651/5269]? Total number of X-ray point sources found across the entire mosaicmeta.numberintnullablen_NxSame number of X-ray sources and observations as the MSFR cited in this columnmeta.notecharMOXC1Region also studied in MOXC1 (Townsley+, 2014, J/ApJS/213/1)meta.ref.urlintnullableNobsNumber of Chandra observations for this region (link to Table 2)meta.numberintnullableJ/ApJS/244/28/moxc3*MOXC3 Chandra point source catalog (see Table 3)LabelX-ray source name used within the project (1)meta.id;obscharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMSFRName of the massive star-forming region (REGIONNAME)obs.fieldcharm_MSFRNGC 6193 has the same data as RCW 108-IRmeta.code.multipcharCXOUX-ray source name (HHMMSS.ss+DDMMSS.s; J2000) (Name)meta.id;meta.maincharn_CXOU[p] p: source exhibiting photon pile-up; column added by CDS (see Note 6)meta.notecharRA_ICRSRight ascension (ICRS) (2)degpos.eq.ra;meta.mainindexedDE_ICRSDeclination (ICRS) (2)degpos.eq.dec;meta.mainindexedePos[0.002/3.5] 1{sigma} error circle around (RAdeg,DEdeg) (PosErr)arcsecstat.errordoublePosTypeAlgorithm used to estimate position (Broos+ 2010ApJ...714.1582B Section 7.1) (PosType)meta.id;stat.fitcharno-m[0/0.01] Most valid probability; smallest of ProbNoSrc_t, ProbNoSrc_s, ProbNoSrc_h, ProbNoSrc_v (ProbNoSrc_MosValid) (3)stat.fit.goodnessdoubleno-t[0/0.4] Smallest p-value under the no-source null hypothesis (Broos+ 2010ApJ...714.1582B Section 4.3) among validaton merges; total (0.5-7keV) energy bad (ProbNoSrc_t) (3)stat.fit.goodnessdoubleno-s? Smallest p-value under the no-source null hypothesis among validation merges; soft (0.5-2keV) energy ban (ProbNoSrc_s) (3)stat.fit.goodnessdoublenullableno-h? Smallest p-value under the no-source null hypothesis among validation merges; hard (2-7keV) energy band (ProbNoSrc_h) (3)stat.fit.goodnessdoublenullableVal?Flag indicating that source validation failed in all multi-ObsID merges; source validation comes from a single ObsID (IsOccasional)meta.codeintKS_S? Smallest p-value under the null hypothesis (no variability within each single ObsID) for the Kolmogorov-Smirnovtest on the timestamps of each ObsID'sevent list (ProbKS_single) (4)stat.fit.goodness;src.vardoublenullableKS_M? p-value under the null hypothesis (no variability) for the Kolmogorov-Smirnov test on the timestamps of he multi-ObsID event list (ProbKS_merge) 4)stat.fit.goodness;src.vardoublenullableChi2? p-value under the null hypothesis (no variability) for the {chi}^2^ test on the single-ObsID measurements f PhotonFlux_t (ProbChisq_PhotonFlux) (4)stat.fit.chi2doublenullableExpNom[4691/625897] Total exposure time in merged ObsIDs (ExposureTimeNominal)stime.duration;obs.exposuredoubleExpFracFraction of ExposureTimeNominal that source was observed (ExposureFraction) (5)stat.fit.omcdoubleCt[1.6e-5/0.8] 0.5-8keV rate in 3x3 CCD pixel cell in count/frame (RateIn3x3Cell) (6)ctpos.cartesian.ydoubleNobs[1/8] Total number of ObsIDs extracted (NumObsIDs)meta.numberintNph[1/8] Number of ObsIDs merged to estimate photometry properties (NumMerged)meta.numberintFdisFraction of exposure discarded in merge (MergeBias)stat.fit.omcdoubleb_thetaSmallest off-axis angle for merged ObsIDs (Theta_Lo)arcmininstr.offsetdoubletheta[0.03/20.6] Average off-axis angle for merged ObsIDsarcmininstr.offsetdoubleB_thetaLargest off-axis angle for merged ObsIDs (Theta_Hi)arcmininstr.offset;stat.maxdoublePSFf[0.37/1] Average PSF fraction (at 1.5keV) for merged ObsIDs (PsfFraction)instr.det.psfdoubleArea[0.7/16188] Average aperture area for merged ObsIDs in (0.492arcsec)^2^ (SrcArea)phys.area;instrdoubleaglow[0/0.5]? Suspected afterglow fraction, 0.50:8.00keV (AfterglowFraction) (7)stat.fit.paramdoublenullableOct-t[2/29733] Observed total (0.5-8keV) counts in merged apertures (SrcCounts_t)ctphot.count;em.X-rayintOct-s[0/23663] Observed soft (0.5-2keV) counts in merged apertures (SrcCounts_s)ctphot.count;em.X-rayintOct-h[0/14236] Observed hard (2-8keV) counts in merged apertures (SrcCounts_h)ctphot.count;em.X-rayintbgScl[0.8/4338] Scaling of the background extraction (Broos+ 2010ApJ...714.1582B Section 5.4) (BkgScaling)instr.backgrounddoublebgct-t[5/19643] Observed total (0.5-8keV) counts in merged background regions (BkgCounts_t)ctinstr.backgroundintbgct-s[0/4278] Observed soft (0.5-2keV) counts in merged background regions (BkgCounts_s)ctinstr.backgroundintbgct-h[0/15365] Observed hard (2-8keV) counts in merged background regions (BkgCounts_h)ctinstr.backgroundintb_Nct-t1{sigma} lower bound on TNcts (NetCounts_Lo_t) (8)ctphot.count;em.X-ray;stat.mindoubleNct-t[0.4/29554] Total (0.5-8keV) net counts in merged apertures (NetCounts_t)ctphot.count;em.X-raydoubleB_Nct-t1{sigma} upper bound on TNcts (NetCounts_Hi_t) (8)ctphot.count;em.X-ray;stat.maxdoubleb_Nct-s? 1{sigma} lower bound on SNcts (NetCounts_Lo_s) (8)ctphot.count;em.X-ray;stat.mindoublenullableNct-s[-13.6/23517] Soft (0.5-2keV) net counts in merged apertures (NetCounts_s)ctphot.count;em.X-raydoubleB_Nct-s1{sigma} upper bound on SNcts (NetCounts_Hi_s) (8)ctphot.count;em.X-ray;stat.maxdoubleb_Nct-h? 1{sigma} lower bound on HNcts (NetCounts_Lo_h) (8)ctphot.count;em.X-ray;stat.mindoublenullableNct-h[-15.6/13595] Hard (2-8keV) net counts in merged apertures (NetCounts_h)ctphot.count;em.X-raydoubleB_Nct-h1{sigma} upper bound on HNcts (NetCounts_Hi_h) (8)ctphot.count;em.X-ray;stat.maxdoubleArea-t[9/242] Mean effective area in cm^2^.count.photon^-1^, total (0.5-8keV) energy bad (MeanEffectiveArea_t) (9)cm**2.count.ph**-1phys.area;instrdoubleArea-s[6/379] Mean effective area in cm^2^.count.photon^-1^, soft (0.5-2keV) energy ban (MeanEffectiveArea_s) (9)cm**2.count.ph**-1phys.area;instrdoubleArea-h[8.8/221] Mean effective area in cm^2^.count.photon^-1^, hard (2-8keV) energy band (MeanEffectiveArea_h) (9)cm**2.count.ph**-1phys.area;instrdoubleEmed-t[0.5/7.8] Total (0.5-8keV) median energy, observed spectrum (MedianEnergy_t) (10)keVem.energyfloatEmed-s[0.5/2]? Soft (0.5-2keV) median energy, observed spectrum (MedianEnergy_s) (10)keVem.energyfloatnullableEmed-h[2/8]? Hard (2-8keV) median energy, observed spectrum (MedianEnergy_h) (10)keVem.energyfloatnullableXFlx-t[1.2e-8/0.001] Total (0.5-8keV) apparent photon flux (PhotonFlux_t) (11)ph.cm**-2.s**-1phot.flux;em.X-raydoubleXFlx-s[-3.5e-6/0.002] Soft (0.5-2keV) apparent photon flux (PhotonFlux_s) (11)ph.cm**-2.s**-1phot.flux;em.X-raydoubleXFlx-h[-1.7e-6/0.0007] Hard (2-8keV) apparent photon flux (PhotonFlux_h) (11)ph.cm**-2.s**-1phot.flux;em.X-raydoubleEFlx-tTotal (0.5-8keV) energy flux max (EnergyFlux_s,0_)+max(EnergyFlux_h,0_) in erg/cm^2^/s (EnergyFluxt) (11)1e-07W.cm**-2em.energydoubleEFlx-s? Soft (0.5-2keV) apparent energy flux (EnergyFlux_s) (11)1e-07W.cm**-2em.energydoublenullableEFlx-h? Hard (2-8keV) apparent energy flux (PhotonFlux_h*MedianEnergy_h*1.602E-09) (EnergyFlux_h) (11)1e-07W.cm**-2em.energydoublenullableJ/ApJS/244/28/table2Log of Chandra observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMSFRMOXC3 MSFR as in Table 1obs.fieldcharm_MSFR3 MSFR have the same data as others; see column n_Nx in Table 1meta.code.multipcharTargetChandra target (1)meta.notecharObsID[2540/19979] Chandra Observation Identification (ObsID) numbermeta.id;meta.mainintDateStart UT date of the observationtime.start;obsnullableExp[4695/148104] Exposure time (2)stime.duration;obs.exposureintRAJ2000On-axis hour of right ascension (J2000) (3)pos.eq.ra;meta.mainDEJ2000On-axis degree of declination (J2000) (3)pos.eq.dec;meta.mainRoll[12/359] Observatory roll angledeginstr.offsetintConfigConfiguration (4)phys.atmol.configuration;instr.setupcharModeACIS observing mode (5)instr.setupcharPIPrincipal investigator (PI) of the observationobs.observercharTGAINAbbreviated name of the ACIS time-dependent gain file (6)meta.id;instr.setup;meta.filecharOBFVersion of the Optical Blocking Filter model (7)meta.softwarecharXskyShift in right ascension (in SKY pixel; 1 SKY pixel=0.492") (8)pixpos.cartesian.x;instr.detfloatYskyShift in declination (in SKY pixel; 1 SKY pixel=0.492") (8)pixpos.cartesian.y;instr.detfloat