Theoretical modes fitting on Miras light curves

Details Theoretical modes fitting on Miras light curves Theoretical modes fitting on Miras light curves

Dec 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.210..139b&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 210, no. 1-2, p. 139-140 (IAU Colloquium 134)

Astronomy and Astrophysics

Astrophysics

1

Light Curve, Mira Variables, Power Spectra, Stellar Models, Stellar Oscillations, Fourier Transformation, Harmonics, Hipparcos Satellite, Space Observations (From Earth), Stellar Spectra

Scientific paper

Visual observations of long period variable stars over 20 years were provided by the American Association of Variable Stars Observers (AAVSO), and were analyzed as part of the preparation of the HIPPARCOS mission. A set of frequencies is extracted from the light curve by using Fourier transform, preliminary Van Cittert deconvolution and comparison of the results obtained through different kinds of spectral windows. The same procedure is applied to the residual obtained after nonlinear fit of the main frequency. After final comparison of both sets, a nonlinear fit of the common frequencies gives the 'clean' power spectrum.

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