The effect of scattering on the temperature stratification of 3d model atmospheres of metal-poor red giants

Remo Collet, Wolfgang Hayek, Martin Asplund

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    We study the effects of different approximations of scattering in 3D radiationhydrodynamics simulations on the photospheric temperature stratification of metal-poor red giant stars. We find that assuming a Planckian source function and neglecting the contribution of scattering to extinction in optically thin layers provides a good approximation of the effects of coherent scattering on the photospheric temperature balance.

    Original languageEnglish
    Title of host publicationAstrophysical Dynamics
    Subtitle of host publicationFrom Stars to Galaxies
    EditorsNicholas Brummell, Sacha Brun, Mark Boulder, Yannick Ponty
    Pages373-374
    Number of pages2
    EditionS271
    DOIs
    Publication statusPublished - Jun 2010

    Publication series

    NameProceedings of the International Astronomical Union
    NumberS271
    Volume6
    ISSN (Print)1743-9213
    ISSN (Electronic)1743-9221

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