J/AJ/99/784ivo://CDS.VizieR/J/AJ/99/784doi:10.26093/cds/vizier.50990784CDSHughes S.M.G.Wood P.R.1998-08-31T11:36:05Z1998-08-31T11:33:38ZCDS support team

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

cds-question@unistra.frmagellanic-cloudsvariable-starsinfrared-photometrymorgan-keenan-classificationInfrared JHK photometry and visual spectra have been obtained for a large sample of long-period variables (LPVs) in the Large Magellanic Cloud (LMC). Various aspects of the asymptotic giant branch (AGB) evolution of LPVs are discussed using these data. The birth/death rate of LPVs of different ages in the LMC is compared with the birth rates of appropriate samples of planetary nebulae clump stars, Cepheids, and OH/IR stars. It appears that there are much fewer large-amplitude LPVs per unit galactic stellar mass in the LMC than in the Galaxy. We suggest that this may be due to the fact that the evolved intermediate-age AGB stars in the LMC often turn into carbon stars, which tend to have smaller pulsation amplitudes than M stars. There is also a major discrepancy between the number of LPVs in the LMC (and in the Galaxy) and the number predicted by the theories of AGB evolution, pulsation, and mass loss. A distance modulus to the LMC of 18.66+0.05 is derived by comparing the LMC LPVs with P~200days with the 47 Tucanae Mira variables in the (K, logP) plane. The (K, logP) relation is also used to examine the tilt of the LMC populations of old and intermediate-age stars.1990AJ.....99..784Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/99/784CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/99/784https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/99/784http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/99/784https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/99/784https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/99/784http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/99/784GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/AJ/99/784/table5LPV - IRAS proximity matchesIRASIRAS namemeta.idcharl_F12Limit flag on F12meta.code.errorcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameLPV name/position (1)meta.id;meta.maincharprimaryPerPeriod of the variabledtime.periodintu_Per[: ] Uncertainty flag on Permeta.code.errorcharSpTypeSpectral type (2)src.spTypecharDImag? Peak to peak I amplitude (2)magsrc.var.amplitudefloatnullableImag? I magnitude (2)magphot.mag;em.opt.IfloatnullableJmag? J magnitude (2)magphot.mag;em.IR.JfloatnullableHmag? H magnitude (2)magphot.mag;em.IR.HfloatnullableKmag? K magnitude (2)magphot.mag;em.IR.KfloatnullableF1212{mu}m flux densitymJyphot.flux.density;em.IR.8-15umfloatu_F12Uncertainty flag on F12meta.code.errorcharl_F25Limit flag on F25meta.code.errorcharF2525{mu}m flux densitymJyphot.flux.density;em.IR.15-30umfloatu_F25Uncertainty flag on F25meta.code.errorcharl_F60Limit flag on F60meta.code.errorcharF60? 60{mu}m flux densitymJyphot.flux.density;em.IR.30-60umfloatnullableu_F60Uncertainty flag on F60meta.code.errorcharl_F100Limit flag on F100meta.code.errorcharF100? 100{mu}m flux densitymJyphot.flux.density;em.IR.60-100umfloatnullableu_F100Uncertainty flag on F100meta.code.errorcharXoffsetOffset on X positionarcsecpos.angDistanceintYoffsetOffset on Y positionarcsecpos.angDistanceintJ/AJ/99/784/table6LPVs excluded from (K, log P) fitrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameLPV name/position (1)meta.id;meta.maincharprimaryPerPeriod of the variabledtime.periodintImagMean I magnitudemagphot.mag;em.opt.IfloatDImagPeak to peak I amplitudemagsrc.var.amplitudefloatJ-HJ-H colour indexmagphot.color;em.IR.J;em.IR.HfloatH-KH-K colour indexmagphot.color;em.IR.H;em.IR.KfloatKmagK magnitudemagphot.mag;em.IR.KfloatJ/AJ/99/784/table2JHK photometry of large-amplitude LPVsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameLPV name/position (1)meta.id;meta.maincharprimaryn_Name[abc] Note on name (2)meta.notecharDImagPeak to peak I amplitudemagsrc.var.amplitudefloatJDImaxJulian date of a recent I maximumdtime.epochintImagMean I magnitudemagphot.mag;em.opt.IfloatJmagJ magnitudemagphot.mag;em.IR.Jfloatu_JmagUncertainty flag on Jmag (0.05<=e_Jmag<=0.13)meta.code.errorcharHmagH magnitudemagphot.mag;em.IR.Hfloatu_HmagUncertainty flag on Hmag (0.05<=e_Hmag<=0.13)meta.code.errorcharKmagK magnitudemagphot.mag;em.IR.Kfloatu_KmagUncertainty flag on Kmag (0.05<=e_Kmag<=0.13)meta.code.errorcharMbolBolometric magnitude derived from K and J-Kmagphot.mag.bolfloatSpTypeSpectral type obtained by spectroscopy, or, if enclosed in parentheses, from J-Ksrc.spTypecharJDJulian date at which the photometry was obtaineddtime.epochintPer? Period of the variabledtime.periodintnullableu_Per[: ] Marginal periodic variablesmeta.code.errorcharPer2? Second period (3)dtime.periodintnullableu_Per2[: ] Marginal periodic variablesmeta.code.errorcharJ/AJ/99/784/table3JHK photometry of small-amplitude LPVwsKmagK magnitudemagphot.mag;em.IR.KfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameLPV name/position (1)meta.id;meta.maincharprimaryn_Name[abc] Note on name (2)meta.notecharDImagPeak to peak I amplitudemagsrc.var.amplitudefloatJDImaxJulian date of a recent I maximumdtime.epochintImagMean I magnitudemagphot.mag;em.opt.IfloatJmagJ magnitudemagphot.mag;em.IR.Jfloatu_JmagUncertainty flag on Jmag (0.05<=e_Jmag<=0.13)meta.code.errorcharHmagH magnitudemagphot.mag;em.IR.Hfloatu_HmagUncertainty flag on Hmag (0.05<=e_Hmag<=0.13)meta.code.errorcharu_KmagUncertainty flag on Kmag (0.05<=e_Kmag<=0.13)meta.code.errorcharMbolBolometric magnitude derived from K and J-Kmagphot.mag.bolfloatSpTypeSpectral type obtained by spectroscopy, or, if enclosed in parentheses, from J-Ksrc.spTypecharJDJulian date at which the photometry was obtaineddtime.epochintPer? Period of the variabledtime.periodintnullableu_Per[: ] Marginal periodic variablesmeta.code.errorcharPer2? Second period (3)dtime.periodintnullableu_Per2[: ] Marginal periodic variablesmeta.code.errorcharJ/AJ/99/784/table4JHK photometry of old variablesPer2? Second period (3)dtime.periodintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameLPV name/position (1)meta.id;meta.maincharprimaryn_Name[abc] Note on name (2)meta.notecharDImagPeak to peak I amplitudemagsrc.var.amplitudefloatJDImaxJulian date of a recent I maximumdtime.epochintImagMean I magnitudemagphot.mag;em.opt.IfloatJmagJ magnitudemagphot.mag;em.IR.Jfloatu_JmagUncertainty flag on Jmag (0.05<=e_Jmag<=0.13)meta.code.errorcharHmagH magnitudemagphot.mag;em.IR.Hfloatu_HmagUncertainty flag on Hmag (0.05<=e_Hmag<=0.13)meta.code.errorcharKmagK magnitudemagphot.mag;em.IR.Kfloatu_KmagUncertainty flag on Kmag (0.05<=e_Kmag<=0.13)meta.code.errorcharMbolBolometric magnitude derived from K and J-Kmagphot.mag.bolfloatSpTypeSpectral type obtained by spectroscopy, or, if enclosed in parentheses, from J-Ksrc.spTypecharJDJulian date at which the photometry was obtaineddtime.epochintPer? Period of the variabledtime.periodintnullableu_Per[: ] Marginal periodic variablesmeta.code.errorcharu_Per2[: ] Marginal periodic variablesmeta.code.errorchar