J/MNRAS/426/2917ivo://CDS.VizieR/J/MNRAS/426/2917doi:10.26093/cds/vizier.74262917CDSGetman K.V.Feigelson E.D.Sicilia-Aguilar A.Broos P.S.Kuhn M.A.,Garmire G.P.2024-07-19T20:16:42Z2013-08-08T12:39:50ZCDS support team

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

cds-question@unistra.fropen-star-clustersx-ray-sourcesinfrared-photometryRich young stellar clusters produce HII regions whose expansion into the nearby molecular cloud is thought to trigger the formation of new stars. However, the importance of this mode of star formation is uncertain. This investigation seeks to quantify triggered star formation (TSF) in IC 1396A (aka the Elephant Trunk Nebula), a bright-rimmed cloud (BRC) on the periphery of the nearby giant HII region IC 1396 produced by the Trumpler 37 cluster. X-ray selection of young stars from Chandra X-ray Observatory data is combined with existing optical and infrared surveys to give a more complete census of the TSF population. Over 250 young stars in and around IC 1396A are identified; this doubles the previously known population. A spatio-temporal gradient of stars from the IC 1396A cloud towards the primary ionizing star HD 206267 is found.2012MNRAS.426.2917Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/426/2917CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/309/581 : CO observations of clouds in IC 1396 region (Weikard +, 1996)J/AJ/130/188 : Young stars in Trumpler 37 & NGC 7160 (Sicilia-Aguilar+, 2005J/ApJ/638/897 : Trumpler 37 & NGC 7160 IR photometry (Sicilia-Aguilar+, 2006)J/MNRAS/415/103 : IPHAS T Tauri candidates in IC 1396 (Barentsen+, 2011)J/AJ/143/61 : H{alpha} spectroscopy in IC 1396 HII region (Nakano+, 2012)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/426/2917https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/426/2917http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/426/2917https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/426/2917https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/426/2917http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/426/2917GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/426/2917/Xsources (X-ray sources: X-ray properties, optical and IR photometry, and derived properties and classification)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/426/2917/Xsources?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/426/2917/Xsources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/426/2917/Xsources?GETtext/xml+votable180.050000true323.87157.57008690.005555555555555556Cone search capability for table J/MNRAS/426/2917/table4 (Non-Chandra disky stars additional to MC09 stars (Morales-Calderon et al. 2009, J/AJ/702/1507))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/426/2917/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/426/2917/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/426/2917/table4?GETtext/xml+votable180.050000true323.880557.52433310.0055555555555555566/154782.0616683193919197e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/426/2917?format=asciiX-rayInfrareddefaultJ/MNRAS/426/2917/XsourcesX-ray sources: X-ray properties, optical and IR photometry, and derived properties and classificationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/415] X-ray source numbermeta.idintCXOIX1396AIAU designation (HHMMSS.ss+DDMMSS.s)meta.id;meta.maincharRAJ2000X-ray source right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000X-ray source declination (J2000)degpos.eq.dec;meta.mainePos1{sigma} error circle around source positionarcsecstat.errorfloatthetaAverage off-axis angle {theta} for the two merged X-ray observationsarcmininstr.offset;stat.meanfloatNCSource net counts in merged apertures in (0.5-8)keV bandctphot.count;em.X-rayfloate_NC1{sigma} upper error on NCctstat.errorfloatBC[0/22] Observed background counts in merged apertures in (0.5-8)keV bandctinstr.backgroundfloatPSF[0/1] Average PSF fraction for merged observations (at 1.5keV) enclosed within source apertureinstr.det.psf;arith.ratio;stat.meanfloatp-noSmallest of the three p-values (for the full, soft, and hard energy bands) for no-source hypothesisstat.fit.goodnessfloatExp.tEffective exposure timekstime.duration;obs.exposurefloatp-var1? Smallest p-value for the one-sample Kolmogorov-Smirnov statistic under the no-variability null hypothesis within a single-observationsrc.var.indexfloatnullablep-var2? p-value for the one-sample Kolmogorov-Smirnov statistic under the no-variability null hypothesis over the combined observations.src.var.indexfloatnullableMEX-ray median energy in (0.5-8)keV bandkeVem.energyfloatFXApparent photometric flux in (0.5-8)keV bandph.cm**-2.s**-1phot.flux;em.X-raydoubleVmag1? Optical FLWO V magnitude (5)magphot.mag;em.opt.Vfloatnullablee_Vmag1? rms uncertainty on Vmag1magstat.error;phot.mag;em.opt.VfloatnullableImag1? Optical FLWO Cousins I magnitude (5)magphot.mag;em.opt.Ifloatnullablee_Imag1? rms uncertainty on Imagmagstat.error;phot.mag;em.opt.IfloatnullableVmag2? Optical LAICA V magnitude (5)magphot.mag;em.opt.Vfloatnullablee_Vmag2? rms uncertainty on Vmag2magstat.error;phot.mag;em.opt.VfloatnullableImag2? Optical LAICA Johnson I magnitude (5)magphot.mag;em.opt.Ifloatnullablee_Imag2? rms uncertainty on Imag2magstat.error;phot.mag;em.opt.IfloatnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? rms uncertainty on Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKsmag? 2MASS Ks magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag? rms uncertainty on Ksmagmagstat.error;phot.mag;em.IR.KfloatnullableF22MASS photometry quality and confusion/ contamination flags (see Cat. II/246)meta.ref;pos.framechar[3.6]? Spitzer/IRAC 3.6um magnitudemagphot.mag;em.IR.3-4umfloatnullablee_[3.6]? rms uncertainty on [3.6]magstat.errorfloatnullable[4.5]? Spitzer/IRAC 4.5um magnitudemagphot.mag;em.IR.4-8umfloatnullablee_[4.5]? rms uncertainty on [4.5]magstat.errorfloatnullable[5.8]? Spitzer/IRAC 5.8um magnitudemagphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? rms uncertainty on [5.8]magstat.errorfloatnullable[8.0]? Spitzer/IRAC 8.0um magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? rms uncertainty on [8.0]magstat.errorfloatnullableF3Digital flag giving photometric apertures and level of source contamination from nearby sources and nebular IR emission (G1)meta.codecharlog(NH)? X-ray column densitylog(cm**-2)phys.columnDensityfloatnullablee_log(NH)? rms uncertainty on log(NH) (1)log(cm**-2)stat.errorfloatnullablelog(LX)? Intrinsic X-ray luminosity for full (0.5-8.0)keV band (2)log(1e-07W)phys.luminosity;em.X-rayfloatnullablee_log(LX)? rms uncertainty on log(LX) (1)log(1e-07W)stat.errorfloatnullablel_t1Limit flag on t1meta.code.errorchart1? Age estimate from FLWO CMD (3)Myrtime.agefloatnullablel_t2Limit flag on t2meta.code.errorchart2? Age estimate from LAICA CMD (3)Myrtime.agefloatnullableas0? Apparent SED slope {alpha}_0_ from IRAC photometryspect.indexfloatnullablee_as0? rms uncertainty on as0stat.errorfloatnullableNp? Number of IRAC bands, from which the SED slope was derivedmeta.numberintnullable2MASS2MASS identifier (HHMMSSss+DDMMSSs)meta.id.crosscharIRACSource identifier from our analysis of the IRAC data (JHHMMSS.ss+DDMMSS.s)meta.id.crosscharn_IRAC[O] 0 for X-ray sources outside the field of view of the IRAC data analyzedmeta.notecharSA05Stellar counterparts from Sicilia-Aguilar et al. (2005, Cat. J/AJ/130/188), <[SHB2004] Trumpler 37 NN-NNNN> in Simbadmeta.idcharB11? Stellar counterparts from Barentsen et al. (2011, Cat. J/MNRAS/415/103), [BVD2011] NNNmeta.idintnullableMC09? Stellar counterparts from Morales-Calderon et al. 2009, Cat. J/ApJ/702/1507), <[MSR2009] IC1396A-NN> in Simbad.meta.id.crossintnullablegl[0/1] Positional flag indicates if an X-ray source lies projected against the globule ("1") or not ("0")meta.codeintClassIndicates membership and YSO class (4)meta.code.classcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/426/2917/table4Non-Chandra disky stars additional to MC09 stars (Morales-Calderon et al. 2009, J/AJ/702/1507)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNo[1/42] Source number for non-Chandra IR-excess sources found in our IRAC data analysis (1)meta.idintRAJ2000IRAC right ascension in decimal degrees (J2000)degpos.eq.ra;meta.mainDEJ2000IRAC declination in decimal degrees (J2000)degpos.eq.dec;meta.mainJmag? 2MASS J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on Jmagmagstat.error;phot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? rms uncertainty on Hmagmagstat.error;phot.mag;em.IR.HfloatnullableKsmag? 2MASS Ks magnitudemagphot.mag;em.IR.Kfloatnullablee_Ksmag? rms uncertainty on Ksmagmagstat.error;phot.mag;em.IR.KfloatnullableF12MASS photometry quality and confusion-contamination flagsmeta.code.qual;photchar[3.6]? Spitzer/IRAC 3.6um magnitudemagphot.mag;em.IR.3-4umfloatnullablee_[3.6]? rms uncertainty on [3.6]magstat.errorfloatnullable[4.5]? Spitzer/IRAC 4.5um magnitudemagphot.mag;em.IR.4-8umfloatnullablee_[4.5]? rms uncertainty on [4.5]magstat.errorfloatnullable[5.8]? Spitzer/IRAC 5.8um magnitudemagphot.flux.density;em.IR.4-8umfloatnullablee_[5.8]? rms uncertainty on [5.8]magstat.errorfloatnullable[8.0]? Spitzer/IRAC 8.0um magnitudemagphot.flux.density;em.IR.8-15umfloatnullablee_[8.0]? rms uncertainty on [8.0]magstat.errorfloatnullableF2Digital flag giving photometric apertures and level of source contamination from nearby sources and nebular IR emission (G1)meta.code.error;photintas0? Apparent SED slope {alpha}_0_ from IRAC photometryspect.indexfloatnullablee_as0? rms uncertainty on alpha0stat.errorfloatnullableReg[0/1] Positional flag indicating if a source lies within the ACIS FOV ("1") or not ("0")meta.code.error;pos.posAngcharB11? Stellar counterparts from Barentsen et al. (2011, Cat. J/MNRAS/415/103), [BVD2011] NNNmeta.idintnullableSA05Stellar counterparts from Sicilia-Aguilar et al. (2005, Cat. J/AJ/130/188), [SHB2004] Trumpler 37 NN-NNNN or 2MASS namemeta.idcharSimbadSimbad column added by the CDSmeta.ref.urlchar