- ...guiding
- For HD 83965B, which has a close bright
companion, a
aperture was used to exclude the companion;
continuous guiding on the Channel 2 star was performed to check telescope
tracking.
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- ...ones
- There
is a caveat: the seismological parallaxes are inferred by applying
asymptotic theory. Although roAp stars pulsate in high radial overtones, the
frequency spacing for these consecutive overtones is still smaller than the
asymptotic one, resulting in (by several
percent) systematically smaller seismological parallaxes. Furthermore, model
calculations by Gautschy et al. (1998) show that
significant deviations of observed frequency spacings from the asymptotic
values can occur due to nonadiabatic effects.
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- ...three
- We deliberately do
not consider HD 101065 here, since this object is so peculiar that its
effective temperature cannot even be estimated with some confidence.
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