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

Abstract: We present the results of our recent search for pulsational line profile variations in high time resolution UVES spectra of the most evolved Ap star known, the δ Scuti star HD 21190, and of the Ap Sr star HD 218994. We found that HD 218994 is an roAp star with a pulsation period of 5.1 min, which makes it the 36th star known to be a roAp star. No rapid pulsations have been found in the spectra of the δ Scuti star HD 21190. However, we detect moving peaks in the cores of spectral lines, which indicate the presence of non-radial pulsations in this star.

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Last update: April 17, 2008