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Period Analysis of the δ Scuti Star HD93044

Published online by Cambridge University Press:  12 April 2016

Liu Zong-Li
Liu Zong-Li*
Affiliation:
Beijing Astronomical Observatory, Chinese Academy of Sciences, Beijing, China

Abstract

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HD93044 was observed electrophotometricaly on April 21, May 1, 2 and 4, 1991 at Xinglong Station of Beijing Astronomical Observatory. Combining the data with Li Zhiping’s data together and a period analysis was completed using a program which consists of a combination of Fourier transforms of prewhitened data and the multifrequency least squares of brightness residuals (LSR). Three 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.

Keywords

δScutiperiod analysis
Type
II. Observational Facts
Information
International Astronomical Union Colloquium , Volume 134: Nonlinear Phenomena in Stellar Variability , 1993 , pp. 197 - 200
Copyright
Copyright © Kluwer 1993

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