摘要：We present a new analysis of the LAMOST DR1 survey spectral database performed with the code SP_Ace, whichprovides the derived stellar parameters Teff , log g, [Fe/H], and [α/H] for 1,097,231 stellar objects. We tested the reliability of our results by comparing them to reference results from high spectral resolution surveys. The expected errors can be summarized as ∼120K in Teff , ∼0.2 in log g, ∼0.15dex in [Fe/H], and ∼0.1dex in [α/Fe] for spectra with S/N>40, with some differences between dwarf and giant stars. SP_Ace provides error estimations consistent with the discrepancies observed between derived and reference parameters. Some systematic errors are identified and discussed. The resulting catalog is publicly available at the LAMOST and CDS websites.
