A new extensive library of PHOENIX stellar atmospheres and synthetic spectra

TL;DR

This paper introduces a comprehensive library of high-resolution synthetic stellar spectra generated using the PHOENIX code, covering a wide parameter space for spectral analysis and stellar characterization.

Contribution

It presents a new extensive library of synthetic spectra with improved micro-turbulence modeling, covering broad wavelength ranges and stellar parameters.

Findings

Spectra cover 500AA to 50,000AA with high resolution.

Parameter space includes a wide range of temperatures, gravities, and metallicities.

The library is designed to be extended further up to 25,000K.

Abstract

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. 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. The synthetic spectra cover the wavelength range from 500AA to 50.000AA with resolutions of R=500.000 in the optical and near IR, R=100.000 in the IR and a step size of 0.1AA in the UV. The parameter space covers 2.300K<=Teff<=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 Teff=25.000 K.