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

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 an...

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Published in:Astronomy and astrophysics (Berlin) 2018-10, Vol.618, p.A25
Main Authors: Allende Prieto, C., Koesterke, L., Hubeny, I., Bautista, M. A., Barklem, P. S., Nahar, S. N.
Format: Article
Language:English
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Astronomy & Astrophysics
ASTRONOMY AND ASTROPHYSICS
radiative transfer
stars: atmospheres
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cited_by cdi_FETCH-LOGICAL-c396t-3721b050f079b7d159e1b0ba4e47a188f77799d0e2c2923c63a56ad690cbe26f3
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container_issue
container_start_page A25
container_title Astronomy and astrophysics (Berlin)
container_volume 618
creator Allende Prieto, C.
Koesterke, L.
Hubeny, I.
Bautista, M. A.
Barklem, P. S.
Nahar, S. N.
description 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 ASSϵT. Results. The resulting collection of spectra is made publicly available at medium and high-resolution (R ≡ λ/δλ = 10 000, 100 000 and 300 000) spectral grids, which include variations in effective temperature between 3500 K and 30 000 K, surface gravity (0 ≤ log g ≤ 5), and metallicity (−5 ≤ [Fe/H] ≤ +0:5), 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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subjects Astronomy & Astrophysics
ASTRONOMY AND ASTROPHYSICS
radiative transfer
stars: atmospheres
title A collection of model stellar spectra for spectral types B to early-M
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