J/A+A/696/A196ivo://CDS.VizieR/J/A+A/696/A196doi:10.26093/cds/vizier/bc-nr/lbjgCDSGezer I.Marton G.Roquette J.Audard M.Hernandez D.Madarasz M.,Dionatos O.2026-07-03T06:36:51Z2025-04-25T15:23:46ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectspre-main-sequence-starsinfrared-photometryOne of the key tools for understanding the evolution of young stellar objects (YSOs) is to analyze their spectral energy distributions (SEDs). As part of the NEMESIS project, we have performed a large-scale SED fitting analysis of the Orion star formation complex (OSFC). We aim to derive key physical parameters, including temperature, luminosity, mass, and age, for a large sample of sources in the OSFC using synthetic SED models. Our goal is to establish a statistically robust characterization of the stellar population and its evolutionary state across the entire complex. We utilize a set of new radiative transfer model SEDs that span a variety of geometries and parameter spaces. These SEDs are fitted to multi-wavelength photometric data from optical to submillimeter wavelengths. We conducted SED fitting on a sample of 15396 sources. Among these, 5062 have at least a reliable W3 (12um) detection at longer wavelengths, and 63 have sub-millimeter detections in APEX/SABOCA at 350um or APEX/LABOCA at 870um. The resulting physical parameters are cross-referenced with stellar evolutionary tracks to ensure consistency with theoretical predictions. The derived parameters reveal a diverse stellar population. Sources placed on the Hertzsprung-Russell diagram show distinct evolutionary sequences. The results are provided with varying levels of completeness and reliability, depending on the available data for each source. The catalog includes quality indicators such as the flux code, which represents the longest detected wavelength for each source, as well as Prob_W3 and Prob_W4 values that quantify the reliability of the AllWISE W3 and W4 detections. All results, including SED fitting outcomes, uncertainty estimates, and source metadata, are publicly available in a comprehensive CDS table. This dataset provides a statistically significant view of the evolutionary processes within the OSFC. The publicly accessible dataset offers a valuable resource for future studies on star and planet formation.2025A&A...696A.196Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/696/A196CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/696/A196https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/696/A196http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/696/A196https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/696/A196https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/696/A196http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/696/A196GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/696/A196/tablee1 (SED fitting derived parameters for OSFC YSOs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/696/A196/tablee1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/696/A196/tablee1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/696/A196/tablee1?GETtext/xml+votable180.050000true83.466669.884050.005555555555555556Cone search capability for table J/A+A/696/A196/tablee2 (Photometric data used for SED fitting)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/696/A196/tablee2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/696/A196/tablee2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/696/A196/tablee2?GETtext/xml+votable180.050000true83.4261710.282580.0055555555555555563/357 370 4/1338-1339 1342 1413 1424-1425 1427 1436-1437 1474-1475 1486 1504 5/5311 5324 5326-5327 5345-5347 5350-5351 5360 5362-5363 5374 5705 5707 5732-5733 5735 5753 5756-5757 5759 5844-5845 5888 5890 5938-5939 6020-6021 6023-6024 6027 6029-6030 6/21215 21235 21237-21240 21243 21285 21293 21295 21303 21352 21354-21355 21358 21376-21377 21379 21393-21396 21398-21399 21444 21446-21447 21458 21465-21467 21470 21488 21490 21492-21494 21500-21501 21503 22184 22186-22187 22190 22596-22597 22645 22647 22653 22816-22817 22819 22825 22827 22916-22917 22919 22936 22938-22939 22964-22965 22967 23008-23010 23017 23021 23023 23033-23035 23364-23365 23384-23385 23387-23390 23409 23412 23414-23415 23557-23559 23564 23566-23567 23576 23578-23579 23656 23659 23744-23746 23750 23792-23793 23795-23796 23798 23800-23802 24089-24091 24100 24103-24105 24107 24113-24115 24124 24128-24130 24132-24134 24136 24138-24140 24196-241972.283270615984385e-22 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/696/A196?format=asciiInfrareddefaultJ/A+A/696/A196/tablee1SED fitting derived parameters for OSFC YSOsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedInclViewing angle of the associated SEDdegsrc.orbital.inclinationdoubleAboveMS[-1/1] Above main sequence flag (4)meta.codeintStagePhysical evolutionary stage of the models (5)meta.code.classcharClassObservational class based on IR index (6)meta.code.classcharSpIndex? Infrared spectral index of the SED (7)spect.indexdoublenullableFluxCodeLongest detected wavelength code for each soumeta.code;em.wlcharProbW3? Reliability of AllWISE W3 detection (8)stat.fit.goodnessfloatnullableProbW4? Reliability of AllWISE W4 detection (8)stat.fit.goodnessfloatnullableClosestTrackClosest PARSEC evolutionary tracktime.agecharStarMassStellar masssolMassphys.massfloatNdptNumber of data points used in fittingmeta.numberintchi2The {chi}^2^ per data point (2)arith.zpdoubleNfitsNumber of fits (3)meta.numberintAVReddeningmagphys.absorptionfloatRadiusStellar radiussolRadphys.angSize;srcfloatTempStellar temperatureKphys.temperaturefloatLumStellar luminositysolLumphys.luminositydoubleDiskMass? Dust mass contained in the passive disksolMassphys.massdoublenullableDiskRmax? Maximum radius of the passive diskAUphys.angSize;srcfloatnullableDiskRmin? Inner radius of the passive disk, in R_sub unit (1)phys.angSize;srcfloatnullableEnvRmin? Inner radius of the envelope, in R_sub unit (1)phys.angSize;srcfloatnullableStarAge? Stellar ageMyrtime.agedoublenullableNameInternal ID (IDNNNNN)meta.id;meta.maincharModelSetModel set identifier (1)meta.id;stat.param;meta.modelledcharModelNameModel namemeta.id;stat.fitcharJ/A+A/696/A196/tablee2Photometric data used for SED fittingrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameInternal ID ((IDNNNNN))meta.id;meta.maincharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainindexedDEJ2000Declination (J2000)degpos.eq.dec;meta.mainindexedFBP? GAIADR3 BP band flux densitymJyphot.flux.density;em.opt.Bdoublenullablee_FBP? Error in GAIADR3 BP band fluxmJystat.errordoublenullableFG? GAIADR3 G band flux densitymJyphot.flux.density;em.optdoublenullablee_FG? Error in GAIADR3 G band fluxmJystat.errordoublenullableFRP? GAIADR3 RP band flux densitymJyphot.flux.density;em.opt.Rdoublenullablee_FRP? Error in GAIADR3 RP band fluxmJystat.errordoublenullableFJ? 2MASS J band flux densitymJyphot.flux.density;em.IR.Jdoublenullablee_FJ? Error in 2MASS J band fluxmJystat.errordoublenullableFH? 2MASS H band flux densitymJyphot.flux.density;em.IR.Hdoublenullablee_FH? Error in 2MASS H band fluxmJystat.errordoublenullableFKs? 2MASS Ks band flux densitymJyphot.mag;em.IR.Kdoublenullablee_FKs? Error in 2MASS Ks band fluxmJystat.errordoublenullableFW1? CatWISE W1 3.4um band flux densitymJyphot.flux.density;em.IR.3-4umdoublenullablee_FW1? Error in CatWISE W1 3.4um band fluxmJystat.errordoublenullableFW2? CatWISE W2 4.6um band flux densitymJyphot.mag;em.IR.4-8umdoublenullablee_FW2? Error in CatWISE W2 4.6um band fluxmJystat.errordoublenullableFW3? AllWISE W3 11.6um band flux densitymJyphot.flux.density;em.IR.8-15umdoublenullablee_FW3? Error in AllWISE W3 11.6um band fluxmJystat.errordoublenullableFW4? AllWISE W4 22.1um band flux densitymJyphot.flux.density;em.IR.15-30umdoublenullablee_FW4? Error in AllWISE W4 22.1um band fluxmJystat.errordoublenullableFIRAC1? Spitzer/IRAC 3.6um band flux densitymJyphot.mag;em.IR.3-4umdoublenullablee_FIRAC1? Error in Spitzer/IRAC 3.6um band fluxmJystat.errordoublenullableFIRAC2? Spitzer/IRAC 4.5um band flux densitymJyphot.mag;em.IR.4-8umdoublenullablee_FIRAC2? Error in Spitzer/IRAC 4.5um band fluxmJystat.errordoublenullableFIRAC3? Spitzer/IRAC 5.8um band flux densitymJyphot.flux.density;em.IR.4-8umdoublenullablee_FIRAC3? Error in Spitzer/IRAC 5.8um band fluxmJystat.errordoublenullableFIRAC4? Spitzer/IRAC 8.0um band flux densitymJyphot.flux.density;em.IR.8-15umdoublenullablee_FIRAC4? Error in Spitzer/IRAC 8.0um band fluxmJystat.errordoublenullableFMIPS1? Spitzer/MIPS 24um band flux densitymJyphot.flux.density;em.IR.15-30umdoublenullablee_FMIPS1? Error in Spitzer/MIPS 24um band fluxmJystat.errordoublenullableFPACS1? Herschel/PACS 70um band flux densitymJyphot.flux.density;em.IR.30-60umdoublenullablee_FPACS1? Error in Herschel/PACS 70um band fluxmJystat.errordoublenullableFPACS2? Herschel/PACS 100um band flux densitymJyphot.flux.density;em.IR.60-100umdoublenullablee_FPACS2? Error in Herschel/PACS 100um band fluxmJystat.errordoublenullableFPACS3? Herschel/PACS 160um band flux densitymJyphot.flux.density;em.mm.1500-3000GHzdoublenullablee_FPACS3? Error in Herschel/PACS 160um band fluxmJystat.errordoublenullableF350um? APEX/SABOCA 350um band flux densitymJyphot.flux.density;em.mm.750-1500GHzfloatnullablee_F350um? Error in APEX/SABOCA 350um band fluxmJystat.errorfloatnullableF870um? APEX/LABOCA 870um band flux densitymJyphot.flux.density;em.mm.200-400GHzfloatnullablee_F870um? Error in APEX/LABOCA 870um band fluxmJystat.errorfloatnullable