Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993ap%26ss.210..197l&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 210, no. 1-2, p. 197-200 (IAU Colloquium 134)
Astronomy and Astrophysics
Astrophysics
Light Curve, Periodic Variations, Scutum Constellation, Stellar Oscillations, Astrophysics, Electrophotometry, Fourier Transformation, Least Squares Method
Scientific paper
HD93044 was observed electrophotometricaly on April 21, May 1, 2 and 4, 1991 at Xinglong Station of Beijing Astronomical Observatory. The data was combined together with Li Zhiping's data and a period analysis was completed using a program which consists of a combination of Fourier tranforms of prewhitened data and the multifrequency least squares of brightness residuals (LSR). There pulsation frequencies (11.90809, 16.79553, 22.44827 cycles per day) with visual amplitudes between 0.0056 and 0.0203 mag were found. The solution fits the observations to +0.0071 mag which is equal to the mean square deviation of observations. The first frequency (11.90809 cycles per day) must be the right value of the fundamental frequency of HD93044.
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