A collection of model stellar spectra for spectral types B to early-M

C. Allende Prieto, L. Koesterke, Ivan - Hubeny, M. A. Bautista, P. S. Barklem, S. N. Nahar

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Context. Models of stellar spectra are necessary for interpreting light from individual stars, planets, integrated stellar populations, nebulae, and the interstellar medium. Aims. We provide a comprehensive and homogeneous collection of synthetic spectra for a wide range of atmospheric parameters and chemical compositions. Methods. We compile atomic and molecular data from the literature. We adopt the largest and most recent set of ATLAS9 model atmospheres, and use the radiative code ASS€T. Results. The resulting collection of spectra is made publicly available at medium and high-resolution (formula presented) spectral grids, which include variations in effective temperature between 3500K and 30 000 K, surface gravity (formula presented) and metallicity (formula presented) spanning the wavelength interval 120-6500 nm. A second set of denser grids with additional dimensions, [α/Fe] and micro-Turbulence, are also provided (covering 200-2500 nm). We compare models with observations for a few representative cases.

Original languageEnglish (US)
Article numberA25
JournalAstronomy and Astrophysics
Volume618
DOIs
StatePublished - Oct 1 2018

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stellar spectra
grids
nebulae
metallicity
planets
chemical composition
coverings
planet
turbulence
gravity
gravitation
wavelength
intervals
atmospheres
stars
atmosphere
high resolution
wavelengths
temperature

Keywords

  • Atlases
  • Radiative transfer
  • Stars: Atmospheres

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

Allende Prieto, C., Koesterke, L., Hubeny, I. ., Bautista, M. A., Barklem, P. S., & Nahar, S. N. (2018). A collection of model stellar spectra for spectral types B to early-M. Astronomy and Astrophysics, 618, [A25]. https://doi.org/10.1051/0004-6361/201732484

A collection of model stellar spectra for spectral types B to early-M. / Allende Prieto, C.; Koesterke, L.; Hubeny, Ivan -; Bautista, M. A.; Barklem, P. S.; Nahar, S. N.

In: Astronomy and Astrophysics, Vol. 618, A25, 01.10.2018.

Research output: Contribution to journalArticle

Allende Prieto, C. ; Koesterke, L. ; Hubeny, Ivan - ; Bautista, M. A. ; Barklem, P. S. ; Nahar, S. N. / A collection of model stellar spectra for spectral types B to early-M. In: Astronomy and Astrophysics. 2018 ; Vol. 618.
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AU - Bautista, M. A.

AU - Barklem, P. S.

AU - Nahar, S. N.

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AB - Context. Models of stellar spectra are necessary for interpreting light from individual stars, planets, integrated stellar populations, nebulae, and the interstellar medium. Aims. We provide a comprehensive and homogeneous collection of synthetic spectra for a wide range of atmospheric parameters and chemical compositions. Methods. We compile atomic and molecular data from the literature. We adopt the largest and most recent set of ATLAS9 model atmospheres, and use the radiative code ASS€T. Results. The resulting collection of spectra is made publicly available at medium and high-resolution (formula presented) spectral grids, which include variations in effective temperature between 3500K and 30 000 K, surface gravity (formula presented) and metallicity (formula presented) spanning the wavelength interval 120-6500 nm. A second set of denser grids with additional dimensions, [α/Fe] and micro-Turbulence, are also provided (covering 200-2500 nm). We compare models with observations for a few representative cases.

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