Photometric properties of theoretical spectral libraries for GAIA photometry

Details Photometric properties of theoretical spectral libraries for GAIA photometry Photometric properties of theoretical spectral libraries for GAIA photometry

2003-02-05

arxiv.org/abs/astro-ph/0302079v1

Astronomy and Astrophysics

Astrophysics

4 pages, 1 figure, LaTeX (uses newpasp.sty), to appear in the proceedings of ``GAIA Spectroscopy, Science and Technology'' (Mo

Scientific paper

Photometric properties of various spectral libraries of synthetic stellar spectra derived from the ATLAS 9 (Castelli et al. 1997), the PHOENIX NextGen (Hauschildt et al. 1999a, 1999b), the NMARCS (Bessell et al. 1998), and the BaSeL (Lejeune et al. 1998, Westera et al. 2002) models are discussed in view of their application to the definition of the GAIA photometric system. Comparisons with empirical UBVRI calibrations show significant discrepancies at low temperatures between the different models, and with respect to the \basel 3.1 and the Alonso et al. (1998, 1999) empirical calibrations.

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