000002105 001__ 2105
000002105 005__ 20160701171658.0
000002105 0247_ $$2DOI$$a10.1093/mnras/stv528
000002105 037__ $$aASTROimport-262
000002105 100__ $$aNiemczura, E.
000002105 245__ $$aSpectroscopic survey of Kepler stars. I. HERMES/Mercator observations of A- and F-type stars
000002105 260__ $$c2015
000002105 520__ $$aThe Kepler space mission provided near-continuous and high-precision photometry of about 207 000 stars, which can be used for asteroseismology. However, for successful seismic modeling it is equally important to have accurate stellar physical parameters. Therefore, supplementary ground-based data are needed. We report the results of the analysis of high-resolution spectroscopic data of A- and F-type stars from the Kepler field, which were obtained with the HERMES spectrograph on the Mercator telescope. We determined spectral types, atmospheric parameters and chemical abundances for a sample of 117 stars. Hydrogen Balmer, Fe I, and Fe II lines were used to derive effective temperatures, surface gravities, and microturbulent velocities. We determined chemical abundances and projected rotational velocities using a spectrum synthesis technique. The atmospheric parameters obtained were compared with those from the Kepler Input Catalogue (KIC), confirming that the KIC effective temperatures are underestimated for A stars. Effective temperatures calculated by spectral energy distribution fitting are in good agreement with those determined from the spectral line analysis. The analysed sample comprises stars with approximately solar chemical abundances, as well as chemically peculiar stars of the Am, Ap, and λ Boo types. The distribution of the projected rotational velocity, vsin i, is typical for A and F stars and ranges from 8 to about 280 km s-1, with a mean of 134 km s-1. 
000002105 700__ $$a Murphy, S. J.
000002105 700__ $$a Smalley, B.
000002105 700__ $$a Uytterhoeven, K.
000002105 700__ $$a Pigulski, A.
000002105 700__ $$a Lehmann, H.
000002105 700__ $$a Bowman, D. M.
000002105 700__ $$a Catanzaro, G.
000002105 700__ $$a van Aarle, E.
000002105 700__ $$a Bloemen, S.
000002105 700__ $$a Briquet, M.
000002105 700__ $$a De Cat, P.
000002105 700__ $$a Drobek, D.
000002105 700__ $$a Eyer, L.
000002105 700__ $$a Gameiro, J. F. S.
000002105 700__ $$a Gorlova, N.
000002105 700__ $$a Kaminski, K.
000002105 700__ $$a Lampens, P.
000002105 700__ $$a Marcos-Arenal, P.
000002105 700__ $$a Pápics, P. I.
000002105 700__ $$a Vandenbussche, B.
000002105 700__ $$a Van Winckel, H.
000002105 700__ $$a Stȩślicki, M.
000002105 700__ $$a Fagas, M.
000002105 773__ $$c2764-2783$$i3$$pMonthly Notices of the Royal Astronomical Society$$v450$$y2015
000002105 85642 $$ahttp://esoads.eso.org/abs/2015MNRAS.450.2764N
000002105 905__ $$apublished in
000002105 980__ $$aREFERD