J/ApJ/926/229ivo://CDS.VizieR/J/ApJ/926/229doi:10.26093/cds/vizier/ba-wy-75CDSGrant S.L.Espaillat C.C.Brittain S.Scott-Joseph C.Calvet N.2026-07-02T11:58:27Z2023-12-04T15:08:35ZCDS support team

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

cds-question@unistra.fryoung-stellar-objectspre-main-sequence-starsinfrared-astronomyspectroscopystellar-massesstellar-agesstellar-distanceeffective-temperatureextinctionline-intensitiestwo-color-diagramsAccretion plays an important role in protoplanetary disk evolution, and it is thought that the accretion mechanism changes between low- and high-mass stars. Here we characterize accretion in intermediate-mass, pre-main-sequence Herbig Ae/Be (HAeBe) stars to search for correlations between accretion and system properties. We present new high-resolution, near-infrared spectra from the Immersion GRating INfrared Spectrograph for 102 HAeBes and analyze the accretion-tracing Br{gamma} line at 2.166{mu}m. We also include the samples of Fairlamb+ (2015, J/MNRAS/453/976 and 2017MNRAS.464.4721F) and Donehew & Brittain (2011AJ....141...46D), for a total of 155 targets. We find a positive correlation between the Br{gamma} and stellar luminosity, with a change in the slope between the Herbig Aes and Bes. We use L_Br{gamma}_ to determine the accretion luminosity and rate. We find that the accretion luminosity and rate depend on stellar mass and age; however, the trend disappears when normalizing the accretion luminosity by the stellar luminosity. We classify the objects into flared (group I) or flat (group II) disks and find that there is no trend with accretion luminosity or rate, indicating that the disk dust structure is not impacting accretion. We test for Br{gamma} variability in objects that are common to our sample and previous studies. We find that the Br{gamma} line equivalent width is largely consistent between the literature observations and those that we present here, except in a few cases where we may be seeing changes in the accretion rate.2022ApJ...926..229Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/926/229CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)I/345 : Gaia DR2 (Gaia Collaboration, 2018)J/ApJS/99/135 : Rotation and Spectral Peculiarities (Abt+ 1995)J/ApJS/101/117 : UBVRIJHKLMNQ photometry in Taurus-Auriga (Kenyon+ 1995)J/ApJS/147/305 : IUE atlas of pre-main-sequence stars (Valenti+, 2003)J/AJ/126/2971 : UBVRI photometry of 131 Herbig Ae/Be (Vieira+, 2003)J/ApJ/653/657 : Spectroscopic obs. of Herbig Ae/Be stars (Manoj+, 2006)J/A+A/458/173 : Optical spectroscopy of 253 IRAS sources (Suarez+, 2006)J/BaltA/17/125 : Interstellar reddening in 3 HII regions (Straizys+, 2008)J/ApJ/693/L81 : Extinction in star-forming regions (McClure, 2009)J/A+A/555/A64 : Gaps in flaring Herbig Ae/Be disks (Maaskant+, 2013)J/ApJS/208/9 : Intrinsic colors & temperatures of PMS stars (Pecaut+, 2013)J/MNRAS/453/976 : Herbig Ae/Be X-shooter observations (Fairlamb+, 2015)J/ApJS/226/8 : IRS survey of Class II objects in Orion A. I. (Kim+, 2016)J/A+A/599/A85 : Structure of Herbig AeBe disks at mas scale (Lazareff+, 2017)J/A+A/620/A128 : Gaia DR2 study of Herbig Ae/Be stars (Vioque+, 2018)J/AJ/157/159 : Stellar parameters for 131 Herbig Ae/Be stars (Arun+, 2019)J/A+A/622/A72 : Intermediate-mass T Tau stars spectra (Villebrun+, 2019)J/A+A/638/A21 : Herbig Ae/Be and classical Be stars catalog (Vioque+, 2020)J/MNRAS/493/234 : Herbig Ae/Be accretion rates (Wichittanakom+ 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/926/229https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/926/229http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/926/229https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/926/229https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/926/229http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/926/229GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/926/229/igrins (Observing log (Table 1), stellar properties (Table 2) and BrGamma line properties (Table 4) of the IGRINS sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/926/229/igrins?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/926/229/igrins?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/926/229/igrins?GETtext/xml+votable180.050000true76.1249583-3.78730280.005555555555555556Cone search capability for table J/ApJ/926/229/table3 (Stellar properties of the auxiliary sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/926/229/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/926/229/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/926/229/table3?GETtext/xml+votable180.050000true55.19583331.548250.0055555555555555566/1113-1114 1538 1591 11786 12996 14031 14040 14372 14440 14647 14685-14687 14700 15363 15368-15370 15409 15682 15684 15840 20831 20934 21274 21316 21337 21354 21396 21402 21418 21421 21430 21436 21438-21439 21456 21458 21480 21541 21643 21646 22020 22023 22047 22080 22804-22805 22828-22829 22841 22854 22856 22860-22861 22873 22886 22892 22895 22981 23636-23637 23644 23646 23683 23717 23736 23739 23767 23795 23798 23970 24139 24277 24279 24281 24355 24419 24449 28921 29193 30251 30363 31259 32065 36956 37169 37186 37334 37353 37362 37366 37676 37714 37851 37883 37886 37890 37916 37932 37934 37978 38002 39163 39228 39259-39260 39290 39908 39926 39929 41472 41662 41698 41734 41812 42382 42429 42595 42611 42644 42931 42972 42988 43235 43444 43637 44049 44301 44356 44362https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/926/229?format=asciiInfrareddefaultJ/ApJ/926/229/igrinsObserving log (Table 1), stellar properties (Table 2) and BrGamma line properties (Table 4) of the IGRINS sampler_AVReference code for AV (3)meta.ref;pos.framecharr_DistReference code for Dist (3)meta.ref;pos.framecharr_logLsReference code for logLs (3)meta.ref;pos.framecharr_MsReference code for Ms (3)meta.ref;pos.framecharr_AgeReference code for Age (3)meta.ref;pos.framecharEWobs[-42.1/6] Observed Br{gamma} equivalent width; Angstroms0.1nmspect.line.eqWidthfloate_EWobs[0.3/1] Uncertainty in EWobs0.1nmstat.errorfloatDelKmag[0.04/5] Difference between dereddened target photosphere K band magnitudesmagphot.mag;arith.diff;em.IR.KfloatEWcor[-47.3/2.6] Equivalent width after correcting for disk veiling & photospheric absorption0.1nmspect.line.eqWidthfloate_EWcor[0.3/1] Uncertainty in EWcor0.1nmstat.errorfloatFBrg[0.2/1310] Br{gamma} flux; 10^-14^erg/s/cm^2^1e-17W.m**-2phot.fluxfloate_FBrg[0.2/50] Uncertainty in FBrg1e-17W.m**-2stat.errorfloatSimbadSimbad column added by the CDSmeta.ref.urlcharE_Teff[80/6000]? Upper uncertainty in TeffKstat.error;stat.maxintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/102] Index numbermeta.idintNameTarget identifiermeta.id;meta.maincharRAJ2000[5/23] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainDateUT date of observation; YYYY/MM/DDtime.epochcharExpExposure timestime.duration;obs.exposurecharSNR[32/102] Signal-to-Noisestat.snrintTeff[6150/30000] Effective temperatureKphys.temperature.effectiveinte_Teff[80/5000]? Lower uncertainty in TeffKstat.error;phys.temperature.effectiveintnullableAV[-1.78/8.46] The V band extinctionmagphys.absorptionfloate_AV[0.02/0.5]? Lower uncertainty in AVmagstat.errorfloatnullableE_AV[0.01/0.5]? Upper uncertainty in AVmagstat.error;stat.maxfloatnullableDist[90/3000] Distancepcpos.distance;pos.heliocentricfloate_Dist[0.7/3000] Lower uncertainty in Distpcstat.errorfloatE_Dist[0.7/4000] Upper uncertainty in Distpcstat.error;stat.maxfloatlogLs[0.39/4.9]? log stellar luminositylog(solLum)phys.luminosityfloatnullablee_logLs[0.01/0.7]? Lower uncertainty in logL*log(solLum)stat.errorfloatnullableE_logLs[0.04/0.6]? Upper uncertainty in logL*log(solLum)stat.error;stat.maxfloatnullableMs[1.2/22]? Stellar masssolMassphys.massfloatnullablee_Ms[0.02/7]? Lower uncertainty in M*solMassstat.errorfloatnullableE_Ms[0.01/10]? Upper uncertainty in M*solMassstat.error;stat.maxfloatnullableAge[0/17]? Stellar ageMyrtime.agefloatnullablee_Age[0.006/5]? Lower uncertainty in AgeMyrstat.error;time.agefloatnullableE_Age[0.02/20]? Upper uncertainty in AgeMyrstat.error;stat.maxfloatnullableGroupGroup identifier ("I": 34 occurrences; "II": 38 occurrences or "III": 1 occurrence) (2)src.classcharr_GroupFlag on Group (3)meta.ref;pos.framecharr_TeffReference code for Teff (3)meta.ref;pos.framecharLBrg[0/17000] Br{gamma} luminosity0.0001solLumphys.luminosityfloate_LBrg[0.2/7000] Uncertainty in LBrg0.0001solLumstat.errorfloatLacc[0/60000] Accretion luminositysolLumphys.luminositydoublee_Lacc[0.03/40000] Uncertainty in LaccsolLumstat.errordoubledM/dt[0.001/900]? Accretion rate1e-06solMass.yr**-1phys.mass.lossfloatnullablee_dM/dt[0.001/800]? Uncertainty in dM/dt (1)1e-06solMass.yr**-1stat.errorfloatnullableShapeBr{gamma} line shapemeta.notecharColor[-2.34/8]? The 12-60um color indexmagphot.color;em.IR;em.IRfloatnullableLNIR[1.7/5.4]? Near-Infrared luminositysolLumphys.luminosity;em.IR.NIRfloatnullableLIR[1/5]? Infrared luminositysolLumphys.luminosity;em.IRfloatnullableVarVariability source (G1)meta.bibcharV20Display data from Vioque+ 2020, J/A+A/638/A21 within 5"meta.ref.urlintnullableF15Display data from Fairlamb+ 2015, J/MNRAS/453/976 within 5"meta.ref.urlintnullableJ/ApJ/926/229/table3Stellar properties of the auxiliary sampleSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLitLiterature source (G1)meta.bibcharNameObject identifiermeta.id;meta.maincharRAJ2000[3/20] Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainTeff[6000/34000] Effective temperatureKphys.temperature.effectiveintDist[102/4000] Distancepcpos.distance;pos.heliocentricfloate_Teff[100/4000] Lower uncertainty in TeffKstat.error;phys.temperature.effectiveintE_Teff[100/4000] Upper uncertainty in TeffKstat.error;stat.maxintAV[0/7.9] The V band extinctionmagphys.absorptionfloate_AV[0/0.6] Lower uncertainty in AVmagstat.errorfloatE_AV[0.01/0.4] Upper uncertainty in AVmagstat.error;stat.maxfloate_Dist[0.9/400] Lower uncertainty in Distpcstat.errorfloatE_Dist[0.9/700] Upper uncertainty in Distpcstat.error;stat.maxfloatlogLs[-0.67/5.4] log stellar luminositylog(solLum)phys.luminosityfloate_logLs[0.05/0.8] Lower uncertainty in logLslog(solLum)stat.errorfloatE_logLs[0.06/0.6] Upper uncertainty in logLslog(solLum)stat.error;stat.maxfloatMs[1.2/40]? Stellar masssolMassphys.massfloatnullablee_Ms[0.02/10]? Lower uncertainty in MssolMassstat.errorfloatnullableE_Ms[0.02/20]? Upper uncertainty in MssolMassstat.error;stat.maxfloatnullableAge[0/18]? Stellar ageMyrtime.agefloatnullablee_Age[0/4]? Lower uncertainty in AgeMyrstat.error;time.agefloatnullableE_Age[0.01/10]? Upper uncertainty in AgeMyrstat.error;stat.maxfloatnullableGroupGroup identifier (1)src.classcharr_GroupFlag on Group (2)meta.ref;pos.framecharr_TeffReference code for Teff (2)meta.ref;pos.framecharr_AVReference code for AV (2)meta.ref;pos.framecharr_DistReference code for Dist (2)meta.ref;pos.framecharr_logLsReference code for logLs (2)meta.ref;pos.framecharr_MsReference code for Ms (2)meta.ref;pos.framecharr_AgeReference code for Age (2)meta.ref;pos.framecharF15Display data from Fairlamb+ 2015, J/MNRAS/453/976 within 5"meta.ref.urlintnullable