Searches for rapid line profile variations of two pulsating CP2 stars: HD 128898 and HD 201601
Neither for Equ nor for αCir was clear positive evidence present for spectral variations which could be attributed to non-radial pulsation. However, our instrumentation was just at the limit of what would be required for a detection of the subtle effects which can be expected for the pulsating CP2 stars. A spectral resolution at least twice as high as that presently used should be attempted for future investigations, as well as a considerable improvement of the SIN ratio of the individual spectra. Obviously, telescopes of the 3 m class and larger are required for such observations, even if the program stars are very bright.
KeywordsIndividual Spectrum Program Star European Southern Observatory Radial Velocity Variation 50cm Telescope
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- Baade, D., Weiss, W. W.: 1986, Astron.Astrophys.Suppl.Ser., in pressGoogle Scholar
- Kilkenny, D.: 1984, priv. comm.Google Scholar
- Kurtz, D. W.: 1982, Mon.Not.Roy.Astr.Soc. 200, 807Google Scholar
- Kurtz, D. W.: 1985, in Proceedings NATO-Workshop “Seismology of the Sun and Distant Stars”, D. Gough ed., CambridgeGoogle Scholar
- Kurtz, D. W., Allen, S., Cropper, M. S.: Inf.Bull.Var.Stars No.2033Google Scholar
- Kurtz, D. W., Schneider, H., Weiss, W. W.: 1985, Mon.Not.Roy.Astr.Soc. 215, 77Google Scholar
- Odell, A. P., Kreidl, T. J.: 1984, in Proceedings 25th Liege Internatl. Astrophys. Coll. “Theoretical Problems in Stellar Stability and Oscillations”, Liége, p.148Google Scholar
- Schneider, H., Weiss, W. W.: 1983, Inf.Bull.Var.Stars No.2306Google Scholar
- Weiss, W. W.: 1986, in Proceedings IAU-Colloquium No. 90 “Upper Main Sequence Stars with Anomalous Abundances”, C. Cowley et al. eds., ReidelGoogle Scholar
- Weiss, W. W., Schneider, H.: 1984, Astron.Astrophys. 135, 148Google Scholar