000002144 001__ 2144
000002144 005__ 20160706150108.0
000002144 0247_ $$2DOI$$a10.1088/2041-8205/789/1/L3
000002144 037__ $$aASTROimport-301
000002144 100__ $$aDong, S.
000002144 245__ $$aOn the Metallicities of Kepler Stars
000002144 260__ $$c2014
000002144 520__ $$aWe use 12,000 stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectroscopic survey data to show that the metallicities of Kepler field stars as given in the Kepler Input Catalog (KIC) systematically underestimate both the true metallicity and the dynamic range of the Kepler sample. Specifically, to the first order approximation, we find [Fe/H]KIC = -0.20 + 0.43[Fe/H]LAMOST, with a scatter of ~0.25 dex, due almost entirely to errors in KIC. This relation is most secure for -0.3  [Fe/H]LAMOST  +0.4 where we have >200 comparison stars per 0.1 dex bin and good consistency is shown between metallicities determined by LAMOST and high-resolution spectra. It remains approximately valid in a slightly broader range. When the relation is inverted, the error in true metallicity as derived from KIC is (0.25 dex)/0.43-0.6 dex. We thereby quantitatively confirm the cautionary note by Brown et al. that KIC estimates of [Fe/H] should not be used by "anyone with a particular interest in stellar metallicities". Fortunately, many more LAMOST spectroscopic metallicities will be available in the near future.
000002144 700__ $$aZheng, Z.
000002144 700__ $$aZhu, Z.
000002144 700__ $$aDe Cat, P.
000002144 700__ $$aFu, J. N.
000002144 700__ $$aYang, X. H.
000002144 700__ $$aZhang, H.
000002144 700__ $$aJin, G.
000002144 700__ $$aZhang, Y.
000002144 773__ $$cL3$$i1$$pThe Astrophysical Journal$$v789$$y2014
000002144 85642 $$ahttp://esoads.eso.org/abs/2014ApJ...789L...3D
000002144 905__ $$apublished in
000002144 980__ $$aREFERD