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astro-ph1998
Eu III identification and Eu abundance in cool CP stars
T. Ryabchikova, N. Piskunov, I. Savanov +1
We report the first identification of the Eu III lambda 6666.317 line in optical spectra of CP stars. This line is clearly present in the spectra of HR 4816, 73 Dra, HR 7575, and b…
astro-ph1998
Atmospheric structure and acoustic cut-off frequency of roAp stars
N. Audard, F. Kupka, P. Morel +2
Some of the rapidly oscillating (CP2) stars, have frequencies which are larger than the theoretical acoustic cut-off frequency. As the cut-off frequency depends on the T(tau) relat…