J/A+A/533/A107ivo://CDS.VizieR/J/A+A/533/A107doi:10.26093/cds/vizier.35330107CDSDehaes S.Bauwens E.Decin L.Eriksson K.Raskin G.Butler B.,Dowell C.D.Ali B.Blommaert J.A.D.L.2020-09-02T06:57:57Z2011-12-27T12:42:11ZCDS support team

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

cds-question@unistra.frgiant-starsastronomical-modelsspectroscopyspectral-energy-distributionAmong late-type red giants, an interesting change occurs in the structure of the outer atmospheric layers as one moves to later spectral types in the Hertzsprung-Russell diagram: a chromosphere is always present, but the coronal emission diminishes and a cool massive wind steps in. Where most studies have focussed on short-wavelength observations, this article explores the influence of the chromosphere and the wind on long-wavelength photometric measurements. The goal of this study is to assess wether a set of standard near-infrared calibration sources are fiducial calibrators in the far-infrared, beyond 50um. The observational spectral energy distributions were compared with the theoretical model predictions for a sample of nine K- and M-giants. The discrepancies found are explained using basic models for flux emission originating in a chromosphere or an ionised wind.2011A&A...533A.107Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/533/A107CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/533/A107https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/533/A107http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/533/A107https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/533/A107https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/533/A107http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/533/A107GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/533/A107/stars (Studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/533/A107/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/533/A107/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/533/A107/stars?GETtext/xml+votable180.050000true213.91541719.18250.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/A+A/533/A1076/15 2282 8767 9717 13392 20940 23540https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/533/A107?format=asciidefaultJ/A+A/533/A107/starsStudied starsNameNamemeta.id;meta.maincharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSimbadSimbad column added by the CDSmeta.ref.urlcharSEDDisplay SEDmeta.ref.urlcharfitsDownload the corresponding FITS spectrum (125Mb!)meta.ref.urlcharONameOther namemeta.idcharSpTypeMK spectral typesrc.spTypecharTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-2)phys.gravityfloatMassMasssolMassphys.massfloatvtTurbulent velocity {xi}km/sphys.velocfloat[Fe/H]Metallicitylog(Sun)phys.abund.ZfloatCCarbon abundance (log scale, H=12)phys.abundfloatNNitrogen abundance (log scale, H=12)phys.abundfloatOOxygen abundance (log scale, H=12)phys.abundfloatMg? Magnesium abundance (log scale, H=12)phys.abundfloatnullableSi? Silicon abundance (log scale, H=12) (1)phys.abundfloatnullableCr? 12C/13C abundance ratiophys.abundintnullableKmagK-band magnitudemagphot.mag;em.IR.KfloatDiamDerived angular diameter based on the K-band photometrymasphys.angSizefloatFileNameName of the model file in subdirectory modmeta.id;stat.param;meta.modelledcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main