CAOSP abstracts, Volume: 38, No.: 2, year: 2008

Author(s): Shibahashi, H.
Journal: Contributions of the Astronomical Observatory Skalnaté Pleso, vol. 38, no. 2, p. 301-310.
Date: 4/2008
Title: The roAp phenomenon - many unsolved issues
Keyword(s): stars: chemically peculiar, stars: oscillations, stars: variables: other
Pages: 301 -- 310

Abstract: Many issues have arisen with the increasing variety of observations of roAp stars. I will discuss the blue-to-red motion in the line profile variation which have recently been found in Nd III and Pr III lines in many roAp stars. To understand the rapid oscillations in Ap stars, the influence of magnetic fields and chemical peculiarity must be taken into account. I will discuss the wave propagation in a stratified plane atmosphere with a magnetic field as fundamental concepts.

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Last update: April 17, 2008