A new extensive library of PHOENIX stellar atmospheres and synthetic spectra

T. O. Husser, S. Wende-Von Berg, S. Dreizler, D. Homeier, A. Reiners, T. Barman, P. H. Hauschildt

Research output: Contribution to journalArticlepeer-review

799 Scopus citations

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 = 0.1Å in the UV. The parameter space covers 2300 K = Teff = 12 000K, 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 Teff = 25 000K.

Original languageEnglish (US)
Article numberA6
JournalAstronomy and astrophysics
Volume553
DOIs
StatePublished - 2013

Keywords

  • Convection
  • Stars: atmospheres
  • Stars: late-type

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

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