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Applying weights to Whole Earth Telescope data: results for four stars
Z.E. Dind1,
T.R. Bedding1,
S.J. O'Toole1 and
S.D.~Kawaler2
1School of Physics, University of Sydney 2006, Australia
2Department of Physics and Astronomy, Iowa State University, Ames, IA 50011
Given that Whole Earth Telescope data are multi-site, with a quality that varies strongly between telescopes, we have investigated the effects of weighting the observations. To calculate weights for each data subset, we measured the white noise at high frequencies. Applying these weights to the Fourier transform resulted in substantial reduction in noise in the power spectrum. We show results for four pulsating stars: the D0 pre-white dwarf PG 707+427, the DB white dwarf GD 358, the sdB star PG 1605+072, and the roAp star HR 1217.
Last changed: 2002/Jun/19
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