A new extensive library of PHOENIX stellar atmospheres and synthetic spectra

Aims. We present a new library of high-resolution synthetic spectra based on the stellar atmosphere code PHOENIX that can be used for a wide range of applications of spectral analysis and stellar parameter synthesis. Methods. The spherical mode of PHOENIX was used to create model atmospheres and to derive detailed synthetic stellar spectra from them. We present a new self-consistent way of describing micro-turbulence for our model atmospheres. Results. The synthetic spectra cover the wavelength range from 500 angstrom to 5.5 mu m with resolutions of R = 500 000 in the optical and near IR, R = 100 000 in the IR and Delta lambda = 0.1 angstrom in the UV. The parameter space covers 2300 K <= T-eff <= 12 000K, 0.0 <= log g <= +6.0, -4.0 <= [Fe/H] <= +1.0, and -0.2 <= [alpha/Fe] <= +1.2. The library is a work in progress and we expect to extend it up to T-eff = 25 000K.