Abstract
A full exploitation of the observations provided by the CoRoT and Kepler missions depends on our ability to complement these data with accurate effective temperatures and chemical abundances. We review in this contribution the major efforts that have been undertaken to characterise late-type, seismic targets based on spectra gathered as part of the ground-based, follow-up campaigns. A specific feature of the spectroscopic studies of these stars is that the gravity can be advantageously fixed to the more accurate value derived from the pulsation spectrum. We will describe the impact that such an approach has on the estimation of T eff and [Fe/H]. The relevance of red-giant seismic targets for studies of internal mixing processes and stellar populations in our Galaxy will also be briefly discussed.
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Notes
- 1.
Note that the sample of Morel et al. (2014) discussed in the following contains a few stars which were eventually not observed by the satellite, as well as a number of benchmark stars used for validation purposes.
- 2.
The possibility of using an independent and more accurate gravity value is also shared by stars with planetary transits (e.g., Torres et al. 2012).
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Acknowledgements
I acknowledge financial support from Belspo for contract PRODEX GAIA-DPAC. I am very grateful to the Fonds National de la Recherche Scientifique (FNRS) and Annie Baglin for providing the financial resources that made my attendance possible.
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Morel, T. (2015). Spectroscopic Constraints for Low-Mass Asteroseismic Targets. In: Miglio, A., Eggenberger, P., Girardi, L., Montalbán, J. (eds) Asteroseismology of Stellar Populations in the Milky Way. Astrophysics and Space Science Proceedings, vol 39. Springer, Cham. https://doi.org/10.1007/978-3-319-10993-0_8
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