J/MNRAS/448/822ivo://CDS.VizieR/J/MNRAS/448/822doi:10.26093/cds/vizier.74480822CDSXiang M.S.Liu X.W.Yuan H.B.Huang Y.Huo Z.Y.Zhang H.W.Chen B.Q.,Zhang H.H.Sun N.C.Wang C.Zhao Y.H.Shi J.R.Luo A.L.Li G.P.,Wu Y.Bai Z.R.Zhang Y.Hou Y.H.Yuan H.L.Li G.W.Wei Z.2024-08-14T20:20:41Z2015-12-04T15:32:44ZCDS support team

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

cds-question@unistra.frstellar-associationseffective-temperatureradial-velocitymetallicityWe introduce the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) stellar parameter pipeline at Peking University - LSP3, developed and implemented for the determinations of radial velocity Vr and stellar atmospheric parameters (effective temperature Teff, surface gravity logg, metallicity [Fe/H]) for the LAMOST Spectroscopic Survey of the Galactic Anticentre (LSS-GAC). We describe the algorithms of LSP3 and examine the accuracy of parameters yielded by it. The precision and accuracy of parameters yielded are investigated by comparing results of multi-epoch observations and of candidate members of open and globular clusters, with photometric calibration, as well as with independent determinations available from a number of external data bases, including the PASTEL archive, the APOGEE, SDSS and RAVE surveys, as well as those released in the LAMOST DR1. The uncertainties of LSP3 parameters are characterized and quantified as a function of the spectral signal-to-noise ratio (SNR) and stellar atmospheric parameters. We conclude that the current implementation of LSP3 has achieved an accuracy of 5.0km/s, 150K, 0.25dex, 0.15dex for the radial velocity, effective temperature, surface gravity and metallicity, respectively, for LSS-GAC spectra of FGK stars of SNRs per pixel higher than 10. The LSP3 has been applied to over a million LSS-GAC spectra collected hitherto. Stellar parameters yielded by the LSP3 will be released to the general public following the data policy of LAMOST, together with estimates of the interstellar extinction E(B-V) and stellar distances, deduced by combining spectroscopic and multiband photometric measurements using a variety of techniques.2015MNRAS.448..822Xhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/448/822CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/448/822https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/448/822http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/448/822https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/448/822https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/448/822http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/448/822GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/448/822/tablea1 (Candidate members of star clusters observed with the LAMOST)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/448/822/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/448/822/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/448/822/tablea1?GETtext/xml+votable180.050000true80.0800330.523356110.0055555555555555565/6086 6/1302 1308 4253 4255 4296 4298-4299 4320 24333 24337-24339 24342 24348 24479 24491 24520 24522https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/448/822?format=asciiOpticaldefaultJ/MNRAS/448/822/tablea1Candidate members of star clusters observed with the LAMOSTSimbadNameSimbad column added by the CDSmeta.idcharS/NSignal-to-noise ratiostat.snrfloatClusterCluster namemeta.id.parentcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension (J2000.0)degpos.eq.ra;meta.mainDEJ2000Declination (J2000.0)degpos.eq.dec;meta.mainTeffEffective temperatureKphys.temperature.effectivefloatloggSurface gravitylog(cm.s**-2)phys.gravityfloat[Fe/H]Metallicityphys.abund.ZfloatRVRadial velocitykm/sphys.veloc;pos.heliocentricfloat