A new extensive library of PHOENIX stellar atmospheres and synthetic spectra

¹ Institut für Astrophysik, Georg-August-Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany
e-mail: husser@astro.physik.uni-goettingen.de
² CRAL, UMR 5574, CNRS, Université de Lyon, École Normale Supérieure de Lyon, 46 allée d’Italie, 69364 Lyon Cedex 07, France
³ Lowell Observatory, 1400 West Mars Hill Road, Flagstaff, AZ 86001, USA
⁴ Hamburger Sternwarte, Gojenbergsweg 112, 21029 Hamburg, Germany

Received: 16 February 2012
Accepted: 14 March 2013

Abstract

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    Å to 5.5   μm with resolutions of R = 500   000 in the optical and near IR, R = 100   000 in the IR and Δλ = 0.1    Å in the UV. The parameter space covers 2300   K ≤ T_eff ≤ 12   000   K, 0.0 ≤ log    g ≤  +6.0, − 4.0 ≤  [Fe/H]  ≤  +1.0, and − 0.2 ≤  [α/Fe]  ≤  +1.2. The library is a work in progress and we expect to extend it up to T_eff = 25   000   K.