J/ApJ/930/39ivo://CDS.VizieR/J/ApJ/930/39doi:10.26093/cds/vizier.19300039CDSVioque M.Oudmaijer R.D.Wichittanakom C.Mendigutia I.Baines D.,Panic O.Iglesias D.Miley J.Perez-Martinez R.2023-12-14T13:24:59Z2022-05-09T14:32:18ZCDS support team

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

cds-question@unistra.frpre-main-sequence-starsemission-line-starseffective-temperaturestellar-distancestellar-massesstellar-agesline-intensitiesvisible-astronomyspectroscopyWe present optical spectroscopy observations of 145 high-mass pre-main-sequence candidates from the catalog of Vioque et al. (2020, PhD thesis University of Leeds) From these, we provide evidence for the Herbig nature of 128 sources. This increases the number of known objects of the class by ~50%. We determine the stellar parameters of these sources using the spectra and Gaia EDR3 data. The new sources are well distributed in mass and age, with 23 sources between 4 and 8M_{sun}_ and 32 sources above 8M_{sun}_. Accretion rates are inferred from H{alpha} and H{beta} luminosities for 104 of the new Herbigs. These accretion rates, combined with previous similar estimates, allow us to analyze the accretion properties of Herbig stars using the largest sample ever considered. We provide further support to the existence of a break in accretion properties at ~3-4M_{sun}_, which was already reported for the previously known Herbig stars. We re-estimate the potential break in accretion properties to be at 3.87_-0.96_^+0.38^M_{sun}_. As observed for the previously known Herbig stars, the sample of new Herbig stars independently suggests intense inner-disk photoevaporation for sources with masses above ~7M_{sun}_. These observations provide robust observational support to the accuracy of the Vioque et al. (2020, PhD thesis University of Leeds) catalog of Herbig candidates.2022ApJ...930...39Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/930/39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/930/39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/930/39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/930/39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/930/39https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/930/39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/930/39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/930/39/tableb1 (Log of observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/930/39/tableb1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/930/39/tableb1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/930/39/tableb1?GETtext/xml+votable180.050000true132.797625-41.64719440.0055555555555555566/1289 1430 1457 1781 1836 1933 3023 3028 3047 3052 3058 3060-3061 3069 3142 3282 3285 3297 3301 3307 3312 3601 3610 3616 3656 3723 12954 12990 13032 13049 13996 14009 14014 14054 14073 14078 14242 14249 14263 14297 14306 14309-14310 14314 14322 14326 14347 14353 14409 14437-14438 14462 14630 14646 14655 14682 14685 14687 14690 14696 14720 15379-15380 15397 15443 15478 15618 15629 15632 15654 15664 15680 15686 15690 15695 21635 21638-21639 21665 22196 22249 23795 23798 28809 29064 29094 29113-29115 29119 29457 29504 29513 29527 30220 30244 30263 30307 30319 30355 30661 30686 37332 37365 37744 37863 37896-37897 37906 37923 37926 37928 37931 38018 39254 39390 39396 39407 41598 41630 41682-41684 41696-41698 41814 42171 42213 42216 42395 42416 42434 430221.9867573869263685e-19 4.621782916333392e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/930/39?format=asciiOpticaldefaultJ/ApJ/930/39/tableb1Log of observationsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier from this work, VOS NNNNmeta.id;meta.maincharGaiaEDR3Gaia EDR3 source identifiermeta.idANameAlternative name from literaturemeta.idcharRA_ICRSRight Ascension (ICRS) at Ep=2016.0 (1)pos.eq.ra;meta.mainDE_ICRSDeclination (ICRS) at Ep=2016.0 (1)pos.eq.dec;meta.mainObsBlueObservation date of Blue spectra (2)time.epoch;obsnullableObsBlue2? Second day of observation of Blue spectrameta.codeintnullableObsRedObservation date of Red spectra (2)time.epochnullableExpBlue1Blue spectra first exposure timestime.duration;obs.exposureintExpBlue2? Blue spectra second exposure timestime.duration;obs.exposureintnullableExpBlue3? Blue spectra third exposure timestime.duration;obs.exposureintnullableExpRed? Red spectra exposure timestime.duration;obs.exposureintnullableSpecSpectrograph identifiermeta.idcharBpmagGaia EDR3 Blue passband magnitudemagphot.mag;em.opt.BfloatGmagGaia EDR3 white G passband magnitudemagphot.mag;em.optfloatRpmagGaia EDR3 Red passband magnitudemagphot.mag;em.opt.RfloatJ/ApJ/930/39/tableb2Stellar parameters, distances and extinctions for the 145 observed sources, ordered by namerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier from this work, VOS NNNN (1)meta.id;meta.maincharTeff? Effective temperature (3)Kphys.temperature.effectiveintnullableE_Teff? Upper uncertainty in TeffKstat.error;stat.maxintnullablee_Teff? Lower uncertainty in TeffKstat.error;phys.temperature.effectiveintnullableDistDistancepcpos.distancefloatE_DistUpper uncertainty in Distpcstat.error;stat.maxfloate_DistLower uncertainty in Distpcstat.errorfloatAV? V band extinctionmagphys.absorptionfloatnullableE_AV? Upper uncertainty in AVmagstat.error;stat.maxfloatnullablee_AV? Lower uncertainty in AVmagstat.errorfloatnullablelogL*? log stellar luminositylog(solLum)phys.luminosityfloatnullableE_logL*? Upper uncertainty in logL*log(solLum)stat.error;stat.maxfloatnullablee_logL*? Lower uncertainty in logL*log(solLum)stat.errorfloatnullableRad? Stellar radiussolRadphys.size.radiusfloatnullableE_Rad? Upper uncertainty in RadsolRadstat.error;stat.maxfloatnullablee_Rad? Lower uncertainty in RadsolRadstat.errorfloatnullableMass? Stellar masssolMassphys.massfloatnullableE_Mass? Upper uncertainty in MasssolMassstat.error;stat.maxfloatnullablee_Mass? Lower uncertainty in MasssolMassstat.error;phys.massfloatnullableAge? Stellar ageMyrtime.agefloatnullableE_Age? Upper uncertainty in AgeMyrstat.error;stat.maxfloatnullablee_Age? Lower uncertainty in AgeMyrstat.error;time.agefloatnullablef_SpType[b] Flag on SpType (2)meta.codecharSpTypeSpectral type (3)src.spTypecharf_Teff[b] Flag on Teff (2)meta.codecharComAdditional comments (G1)meta.notecharJ/ApJ/930/39/tableb3H{alpha} and H{beta} observed equivalent widths and line profilesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier from this work, VOS NNNNmeta.id;meta.maincharEWHa? Observed H{alpha} equivalent width (in Angstroems unit)0.1nmspect.line.eqWidthdoublenullableEWHb? Observed H{beta} equivalent width (in Angstroems unit)0.1nmspect.line.eqWidthfloatnullableEWcor? Equivalent width correction (in Angstroems unit) (1)0.1nmarith.factor;spect.line.eqWidthdoublenullableLPLine profile type (2)meta.codechardM/dt? Accretion rate; see Sect. 5.solMass/yrarith.ratedoublenullableE_dM/dt? Upper uncertainty in dM/dtsolMass/yrstat.error;stat.maxdoublenullablee_dM/dt? Lower uncertainty in dM/dtsolMass/yrstat.errordoublenullablel_IRExcessLimit flag on IRExcessmeta.code.errorcharIRExcess? IR excess; IR/stellar luminosity ratiophot.flux;arith.ratiodoublenullableE_IRExcess? Upper uncertainty in IRExcessstat.error;stat.maxdoublenullablee_IRExcess? Lower uncertainty in IRExcessstat.errordoublenullableFlagsAdditional flags (3)meta.code.errorcharComAdditional comments (G1)meta.notechar