J/MNRAS/355/1196ivo://CDS.VizieR/J/MNRAS/355/1196doi:10.26093/cds/vizier.73551196CDSMorgan D.H.Hatzidimitriou D.Cannon R.D.2024-06-30T20:16:41Z2009-01-05T11:12:14ZCDS support team

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

cds-question@unistra.frmagellanic-cloudscarbon-starsspectroscopyFrom a sample of 304 carbon stars in the central parts of the Large Magellanic Cloud (LMC), ~27 per cent have Merrill-Sanford (MS) bands of the SiC2 molecule. The data are based on a uniform set of spectra taken with 2dF on the Anglo-Australian Telescope, and give useful statistics on the incidence of MS bands and on their correlation (or otherwise) with other properties. All of these are red stars, cooler than 3100 K. The proportion of stars showing the bands is highest amongst the coolest stars, but not all very cool stars show the bands. There is no evidence that MS bands are more common in J-type stars (carbon stars with a high ^13^C/^12^C ratio) than in N-type carbon stars, at least within this sample of LMC stars. There is no apparent correlation with stellar variability, or between the photospheric temperature [as measured by (J-K)] and the occurrence of the 'hot' MS bands from excited molecular states.2004MNRAS.355.1196Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/355/1196CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/369/932 : RI photometry of LMC carbon stars (Kontizas+, 2001)II/247 : Variable Stars in the Large Magellanic Clouds (MACHO, 2001)J/AJ/114/326 : MACHO Variables V. (Alcock+ 1997)J/AJ/124/2039 : LMC Blue variable stars from MACHO (Keller+, 2002)J/AJ/127/334 : MACHO LMC first-overtone RR Lyrae variables (Alcock+, 2004)J/ApJ/542/257 : MACHO LMC first-overtone RR Lyrae (Alcock+, 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/355/1196https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/355/1196http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/355/1196https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/355/1196https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/355/1196http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/355/1196GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/355/1196/table1 (MS band strengths)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/355/1196/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/355/1196/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/355/1196/table1?GETtext/xml+votable180.050000true73.906875-70.04133330.0055555555555555566/33054-33055 33073 33076-33077 33098 33120https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/355/1196?format=asciiOpticaldefaultJ/MNRAS/355/1196/table1MS band strengthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[KDM2001]KDM (<J/A+A/369/932>) numbermeta.id;meta.mainintprimaryf_[KDM2001][*] *: J-type stars (high ^13^C/^12^C)meta.codecharVClass[bcde] Variability class from MACHO database (1)meta.code.class;src.varcharMSC[0/3] MSC code (G1)meta.code.classintu_MSCUncertainty flag on MSCmeta.code.errorcharhotindicates MS hot band (table2)meta.notecharKmagK magnitudemagphot.mag;em.IR.KfloatJ-KJ-K colour indexmagphot.color;em.IR.J;em.IR.Kfloatn_[KDM2001][*] Individal note (2)meta.notechar2MASSDisplay the 2MASS datameta.ref.urlcharSimbadSimbad column added by the CDSchar_RAPosition from Kontizas et al., Cat. <J/A+A/369/932> (right ascension part)degpos.eq.ra;meta.main_DEPosition from Kontizas et al., Cat. <J/A+A/369/932> (declination part)degpos.eq.dec;meta.mainJ/MNRAS/355/1196/table2MS hot band strengthsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[KDM2001]KDM (<J/A+A/369/932>) numbermeta.id;meta.mainintMSC[0/3] MSC code (G1)_meta.code.classintu_MSCUncertainty flag on MSCmeta.code.errorcharH1? Ratio of the 3^1^_1_{lambda}4906 band to the 1^1^_0_ 2^1^_0_{lambda}4867 band (1)spect.line.intensity;arith.ratiocharH2[0/2] Level of the strength classes (2)meta.codeintSimbadSimbad column added by the CDSchar