J/A+A/542/A33ivo://CDS.VizieR/J/A+A/542/A33doi:10.26093/cds/vizier.35420033CDSOnehag A.Heiter U.Gustafsson B.Piskunov N.Plez B.Reiners A.2017-06-22T14:29:16Z2012-06-21T08:41:13ZCDS support team

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

cds-question@unistra.frdwarf-starsm-starsinfrared-astronomyspectroscopyThe relatively large spread in the derived metallicities ([Fe/H]) of M dwarfs shows that various approaches have not yet converged to consistency. The presence of strong molecular features, and incomplete line lists for the corresponding molecules have made metallicity determinations of M dwarfs difficult. Furthermore, the faint M dwarfs require long exposure times for a signal-to-noise ratio sufficient for a detailed spectroscopic abundance analysis. We present a high-resolution (R~50000) spectroscopic study of a sample of eight single M dwarfs and three wide-binary systems observed in the infrared J-band.2012A&A...542A..33Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/542/A33CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/542/A33https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/542/A33http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/542/A33https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/542/A33https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/542/A33http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/542/A33GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfrareddefaultJ/A+A/542/A33/fig1Synthetic and observed spectra for GJ 436recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPanel[1/2] Panel numbermeta.codeintlambda[11953/11998] Wavelength0.1nmem.wldoubleFluxNormalized fluxphot.flux;arith.ratiodoubleFitSynthetic fit, with adopted Teff=3263Kstat.fit.paramdoubleFit-200Synthetic fit, with adopted Teff=3263-200Kstat.fit.paramdoubleFit+200Synthetic fit, with adopted Teff=3263+200Kstat.fit.paramdoubleJ/A+A/542/A33/fig2Synthetic and observed spectra for GJ 250ArecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeg[1/8] Seg numbermeta.codeintlambda[11373/13059] Wavelength0.1nmem.wldoubleFluxNormalized fluxphot.flux;arith.ratiodoubleFitSynthetic fitstat.fit.paramdoubleJ/A+A/542/A33/fig3Synthetic and observed spectra for GJ 250BrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeg[1/8] Seg numbermeta.codeintlambda[11373/13059] Wavelength0.1nmem.wldoubleFluxNormalized fluxphot.flux;arith.ratiodoubleFitSynthetic fitstat.fit.paramdoubleJ/A+A/542/A33/fig4Synthetic and observed spectra for GJ 849recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeg[1/8] Seg numbermeta.codeintlambda[11373/13059] Wavelength0.1nmem.wldoubleFluxNormalized fluxphot.flux;arith.ratiodoubleFitSynthetic fitstat.fit.paramdouble