A database of high and medium-resolution stellar spectra

Abstract

We present a database of 908 spectra of 709 stars obtained with the ELODIE spectrograph at Observatoire de Haute-Provence. 52 orders of the echelle spectra have been carefully fitted together to provide continuous, high-resolution spectra in the wavelength range 410 nm - 680 nm. The archive provides a large coverage of the space of atmospheric parameters : Teff from 3700 K to 13600 K, logg from 0.03 to 5.86 and [Fe/H] from -2.8 to +0.7. At the nominal resolution, R=42000, the mean signal-to-noise ratio is 150 per pixel. The spectra given at this resolution are normalized to their pseudo-continuum and are intended to serve for abundance studies, spectral classification and tests of stellar atmosphere models. A lower resolution version of the archive, at R=10000, is calibrated in physical flux with a broad-band photometric precision of 2.5% and narrow-band precision of 0.5%. It is scoped for stellar population synthesis of galaxies and clusters, and for kinematical investigations of stellar systems.

10 pages, accepted for publication in A&A, data available at http://www-obs.univ-lyon1.fr/hypercat/11/spectrophotometry.html

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