VI/134ivo://CDS.VizieR/VI/134CDSKirby E.N.2011-03-07T08:43:16Z2011-02-14T09:10:05ZCDS support team

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

cds-question@unistra.frastronomical-modelsstellar-atmospheresspectroscopyA grid of ATLAS9 model atmospheres has been computed, spanning Teff in 3500--8000K, log.g in 0.0--5.0, [Fe/H] in -4.0--0.0, [{alpha}/Fe] in -0.08--1.2. These parameters are appropriate for stars in the red giant branch, subgiants, and the lower main sequence. The main difference from a previous, similar grid (Castelli & Kurucz 2003, "Modelling of Stellar Atmospheres", 210, astro-ph/0405087) is the range of [{alpha}/Fe] values. A grid of synthetic spectra, calculated from the model atmospheres, is also presented. The fluxes are computed every 0.02{AA} from 630nm to 910nm. The microturbulent velocity is given by a relation to the surface gravity. This relation is appropriate for giants, but not for subgiants or dwarfs. Therefore, caution is urged for the synthetic spectra with log.g>3.5.2011yCat.6134....0Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/VI/134CatalogResearchIsServedByTAP VizieR generic servicerelated-toVI/77 : Theoretical Stellar Fluxes (Kurucz+Buser, 1994)VI/78 : Theoretical Stellar Flux Spectra for F- to K-type Stars (Buser+ 1992)VI/120 : High-resolution synthetic stellar library (Coelho+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=VI/134https://vizier.iucaa.in/viz-bin/VizieR-2?-source=VI/134http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=VI/134https://vizier.cds.unistra.fr/viz-bin/votable?-source=VI/134https://vizier.iucaa.in/viz-bin/votable?-source=VI/134http://vizieridia.saao.ac.za/viz-bin/votable?-source=VI/134GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultVI/134/paramsSummary of parameters used for synthetic spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTeff[3500,8000] Effective temperatureKphys.temperature.effectiveintlog.g[0,5] Surface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H][-4,0] Metallicity [Fe/H]log(Sun)phys.abund.Zfloat[a/Fe][-0.8,1.2] {alpha}-elements enhancementlog(Sun)phys.abundfloatspPlot the spectrum corresponding to the parametersmeta.ref.urlcharSpFileName of FITS file with 630-910nm spectrum, in a subdirectory of "sp" (1)meta.id;meta.maincharxi1? Microturbulence velocity used in model1 (3)km/sphys.veloc.microTurb;instr.setupintnullablexi2? Microturbulence velocity used in model2 (3)km/sphys.veloc.microTurb;instr.setupintnullableAtFile1File in ATLAS9 format corresponding to model1, in a subdirectory of "atlas9" (2)meta.notecharAtFile2File in ATLAS9 format corresponding to model2, in a subdirectory of "atlas9" (2)meta.notechar