Abstract
A short introduction to the diffusion process under mutual action of radiation acceleration and gravitational settling is given. In a stable stellar atmosphere diffusion develops significant abundance gradients (chemical stratification). The effects of stratification appear as changes in the observed spectral characteristics that are considered in the lecture.
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Acknowledgments
This work was partially supported by Praesidium RAS Program “Nonstationary Phenomena in Objects of the Universe”.
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Ryabchikova, T. (2014). Diffusion and Its Manifestation in Stellar Atmospheres. In: Niemczura, E., Smalley, B., Pych, W. (eds) Determination of Atmospheric Parameters of B-, A-, F- and G-Type Stars. GeoPlanet: Earth and Planetary Sciences. Springer, Cham. https://doi.org/10.1007/978-3-319-06956-2_13
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DOI: https://doi.org/10.1007/978-3-319-06956-2_13
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