J/AJ/113/1733ivo://CDS.VizieR/J/AJ/113/1733doi:10.26093/cds/vizier.51131733CDSHillenbrand L.A.2023-04-06T16:50:24Z2010-12-20T09:30:20ZCDS support team

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

cds-question@unistra.frstellar-populationsvisible-astronomykron-cousins-photometryWe report on the first phase of a study of the stellar population comprising the Orion Nebula Cluster (ONC). Approximately 50% of the ~3500 stars identified to date within ~2.5pc of the namesake Trapezium stars are optically visible, and in this paper we focus on that sample with I<2.5mag. The large number and number density of stars (n_peak_>10^4^pc^-3^), the wide range in the stellar mass (~0.1-50M_{sun}_), and the extreme youth (<1-2Myr) of the stellar population, make the ONC the best site for investigating: (1) the detailed shape of a truly "initial" mass spectrum; (2) the apparent age spread in a region thought to have undergone triggered star formation; (3) the time sequence of star formation as a function of stellar mass; and (4) trends of all of the above with cluster radius.1997AJ....113.1733Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/113/1733CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/171 : Parenago Catalog of Stars in Orion Nebula (Parenago 1954)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/113/1733https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/113/1733http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/113/1733https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/113/1733https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/113/1733http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/113/1733GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/113/1733/ONC (Stars of Orion nebula cluster)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/113/1733/ONC?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/113/1733/ONC?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/113/1733/ONC?GETtext/xml+votable180.050000true83.5475833-5.50540.0055555555555555566/21438-21439 22804-228052.367228618189496e-19 2.6706780932288093e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/113/1733?format=asciiOpticaldefaultJ/AJ/113/1733/ONCStars of Orion nebula clusterrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDIdentification number (1)meta.id;meta.mainintm_IDMultiplicity index on IDmeta.code.multipcharParenago? Parenago (1954, Cat <II/171>) number (2)meta.idintnullableMem? Membership probability (3)%statintnullableRprojProjected radius from Theta 1C Oriminpos.angDistancefloatImag? Adopted I magnitude (Cousins)magphot.mag;em.opt.Ifloatnullablel_V-ILimit flag on V-I (from Prosser et al., 1994ApJ...421..517P)meta.code.error;phot.color;em.opt.VcharV-I? Adopted V-I color indexmagphot.color;em.opt.V;em.opt.IfloatnullableRef? Photometry reference (5)meta.refintnullableComm? Comment reference (6)meta.ref;pos.framecharlogT? Effective temperature of adopted spectral typelog(K)phys.temperature.effectivefloatnullableSpTSpectral type with reference in parentheses (7)meta.ref;src.spTypecharAV? Visual extinction (1)magphys.absorption;em.opt.Vfloatnullablelog(Teff)? Effective temperature assigned from spectral typelog(K)phys.temperature.effectivefloatnullablelog(L)? Stellar luminosity (2)log(solLum)phys.luminosityfloatnullableR? Stellar radius calculated from luminosity and effective temperaturesolRadphys.size.radius;meta.modelledfloatnullableM? Stellar mass (3)solMassphys.massfloatnullablelog(age)? Stellar age interpolated from D'Antona & Mazitelli (1994ApJS...90..467D) isochroneslog(yr)time.agefloatnullableSimbadSimbad column added by the CDSmeta.refcharRAJ2000Right ascension (J2000) (4)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main