Asteroseismology of solar-type stars with Kepler: III. Ground-based data

Molenda-Żakowicz, J.; Bruntt, H.; Sousa, S.; Frasca, A.; Biazzo, K.; Huber, D.; Ireland, M.; Bedding, T.; Stello, D.; Uytterhoeven, K.; Dreizler, S.; De Cat, P.; Briquet, M.; Catanzaro, G.; Karoff, C.; Frandsen, S.; Spezzi, L.
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Astronomische Nachrichten, Vol.331, Issue 9/10, p.981

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We report on the ground-based follow-up program of spectroscopic and photometric observations of solar-like asteroseismic targets for the Kepler space mission. These stars constitute a large group of more than a thousand objects which are the subject of an intensive study by the Kepler Asteroseismic Science Consortium Working Group 1 (KASC WG-1). In the current work we will discuss the methods we use to determine the fundamental stellar atmospheric parameters using high-quality stellar spectra. These provide essential constraints for the asteroseismic modelling and make it possible to verify the parameters in the Kepler Input Catalogue (KIC).