BaSeL: a library of synthetic spectra and colours for GAIA

Abstract

The BaseL Stellar Library (BaSeL) is a library of synthetic spectra which has already been used in various astrophysical applications (stellar clusters studies, characterization and choice of the COROT potential targets, eclipsing binaries,...). This library could provide useful indications to 1) choose the best photometric system for the GAIA strategy by evaluating their expected performances and 2) apply systematically the BaSeL models for any sample of GAIA targets. In this context, we describe one of the future developments of the BaSeL interactive web site to probe the GAIA photometric data: an automatic determination of atmospheric parameters from observed colours.

arXiv commentto appear in Astrophysics and Space Science, proceedings "Census of the Galaxy: challenges for photometry and spectrometry with GAIA", eds. V. Vansevicius, A. Kucinskas and J. Sudzius

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• LEMONY--a Library of Empirical Medium-resolution spectra by Observations with the NAOC Xinglong 2.16\,m and YNAO Gaomeigu 2.4\,m telescopes
• Modeling Strong Lenses from Wide-Field Ground-Based Observations in KiDS and GAMA
• A revised HRD for individual components of binary systems from BaSeL BVRI synthetic photometry. Influence of interstellar extinction and stellar rotation