J/MNRAS/442/2543ivo://CDS.VizieR/J/MNRAS/442/2543doi:10.26093/cds/vizier.74422543CDSYasui C.Kobayashi N.Tokunaga A.T.Saito M.2024-08-09T20:15:27Z2015-06-19T15:53:18ZCDS support team

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

cds-question@unistra.frstellar-associationsmorgan-keenan-classificationWe derived the intermediate-mass (=~1.5-7M_{sun}_) disc fraction (IMDF) in the near-infrared JHK photometric bands as well as in the mid-infrared (MIR) bands for young clusters in the age range of 0 to ~10Myr. From the JHK IMDF, the lifetime of the innermost dust disc (~0.3au; hereafter the K disc) is estimated to be ~3Myr, suggesting a stellar mass (M*) dependence of K-disc lifetime (=~1.5-7M_{sun}_). However, from the MIR IMDF, the lifetime of the inner disc (~5au; hereafter the MIR disc) is estimated to be ~6.5Myr, suggesting a very weak stellar mass dependence (M*). The much shorter K-disc lifetime compared to the MIR-disc lifetime for intermediate-mass (IM) stars suggests that IM stars with transition discs, which have only MIR excess emission but no K-band excess emission, are more common than classical Herbig Ae/Be stars, which exhibit both. We suggest that this prominent early disappearance of the K disc for IM stars is due to dust settling/growth in the protoplanetary disc, and it could be one of the major reasons for the paucity of close-in planets around IM stars.2014MNRAS.442.2543Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/442/2543CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/442/2543https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/442/2543http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/442/2543https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/442/2543https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/442/2543http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/442/2543GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/442/2543/appen (List of intermediate-mass stars in target clusters)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/442/2543/appen?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/442/2543/appen?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/442/2543/appen?GETtext/xml+votable180.050000true52.332400331.41584640.0055555555555555565/3869 5709 5712 5720 5722-5723 5726 11079 11090 6/342 483 501 509 511 844 851-852 856 862 881 965 991 1013 1029 1031 1036 1042 1050 1073-1074 1082 1111 1114-1115 1124 1154 1159 1168-1169 1194 1197-1199 1203-1204 1208 1210 1212 1536 1539-1540 1549 1560 1673-1674 1706 3073 15662-15663 15748-15749 21438-21439 21478 21480-21482 21488 21490 21497 21499-21500 22799 22801 22803-22805 22807-22808 22810 22814-22815 22819-22820 22829 22831-22832 22834 22841-22843 22845-22846 22853-22854 22857-22860 22862-22863 22865-22867 22870-22874 22876 22879 22885-22887 22896-22898 22901-22902 22908 22928-22930 22937 22941 22943 22977 22980-22982 22986-22988 22991 22993-22994 22997-23000 23004 23009-23010 23014 23022 23542 23549-23551 23562 23590 23594-23595 23637 23639 23717 23719 23728 24201 29320 36955-36957 37012 37128 39216 39907 42799 42808 42851 42858 42873 42896 42900 42908 42910-42911 42913 42923 42932 42939-42940 42943 42949 42955 42978 42980-42981 42983 42985 42987 42990-42992 43002 44289 44293 44297 44307-44308 44310-44313 44321 44324 44333 44341 44352-44354 44356-44357 44365 44368 44371 44376 44378 44384-44385 44389 44397 44400 44403 44409 44421 44436 44502https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/442/2543?format=asciiOpticaldefaultJ/MNRAS/442/2543/table1Summary of target clustersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/19] Sequential numbermeta.recordintClusterCluster namemeta.id;meta.maincharprimaryNsNumber of intermediate-mass stars studied in this clustermeta.numberintnullableAge[1/11] Adopted ageMyrtime.agefloate_Age[0.5/3] rms uncertainty on AgeMyrstat.error;time.agefloatr_AgeReference for Age (1)meta.ref;pos.framecharDist[100/1500] Distancepcpos.distance;pos.heliocentricintr_DistReference for Dist (1)meta.ref;pos.framecharRefsReferences for the disc fraction study in the past (1) (2)meta.ref;pos.framecharJ/MNRAS/442/2543/appenList of intermediate-mass stars in target clustersSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintClusterCluster namemeta.id.parentcharn_Name[*] Star with measured dynamical mass (1)meta.notecharNameStar Namemeta.id;meta.maincharONameOther Namemeta.idcharfp[*] Position added at CDS (2)meta.codecharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainSpTypeSpectral type in the literaturesrc.spTypecharr_SpType[*bw] iOrigin of the spectral type (3)meta.ref;pos.framecharKd[Xo-] K-band disk (4)meta.codecharMd[Xo-] MIR disk (4)meta.codecharn_Md[+*] Note on Md for Taurus cluster (5)meta.notecharalpha[-3.1/1.1]? SED slope {alpha} = dln{lambda}F_{lambda}_/dln{lambda}spect.indexfloatnullable