A note on Saio's estimate of second-order effects of rotation on stellar oscillation frequencies
J. Christensen-Dalsgaard 1,2 and
M.J. Thompson 1,3
Received 9 July 1999 / Accepted 3 August 1999
In many cases, oscillating stars rotate so rapidly that second-order effects must be taken into account in analyses of the oscillation frequencies. Such investigations have commonly been based on results provided by Saio (1981) for a polytropic model. Here we compare those with frequency changes for more realistic models; we point out that a simple correction to Saio's data allows them to be used in the observationally relevant case of comparing models at fixed luminosity and effective temperature.
Key words: stars: oscillations stars: rotation methods: data analysis
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© European Southern Observatory (ESO) 1999
Online publication: October 14, 1999