Dynamical opacity-sampling models of Mira variables - II. Time-dependent atmospheric structure and observable properties of four M-type model series

We present four model series of the CODEX dynamical opacity-sampling models of Mira variables with solar abundances, designed to have parameters similar to o Cet, R Leo and R Cas. We demonstrate that the CODEX models provide a clear physical basis for the molecular shell scenario used to explain int...

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Hauptverfasser: Ireland, Michael J. (VerfasserIn) , Scholz, Michael (VerfasserIn) , Wood, Peter R. (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 10 November 2011
In: Monthly notices of the Royal Astronomical Society
Year: 2011, Jahrgang: 418, Heft: 1, Pages: 114-128
ISSN:1365-2966
DOI:10.1111/j.1365-2966.2011.19469.x
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1111/j.1365-2966.2011.19469.x
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Verfasserangaben:M.J. Ireland, M. Scholz and P.R. Wood
Beschreibung
Zusammenfassung:We present four model series of the CODEX dynamical opacity-sampling models of Mira variables with solar abundances, designed to have parameters similar to o Cet, R Leo and R Cas. We demonstrate that the CODEX models provide a clear physical basis for the molecular shell scenario used to explain interferometric observations of Mira variables. We show that these models generally provide a good match to photometry and interferometry at wavelengths between the near-infrared and the radio, and make the model outputs publicly available. These models also demonstrate that, in order to match visible and infrared observations, the Fe-poor silicate grains that form within 3 continuum radii must have small grain radii and therefore cannot drive the winds from O-rich Mira variables.
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Beschreibung:Online Resource
ISSN:1365-2966
DOI:10.1111/j.1365-2966.2011.19469.x