Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981velen......105p&link_type=abstract
Leningradskii Universitet, Vestnik, Matematika, Mekhanika, Astronomiia, Jan. 1981, p. 105-110. In Russian.
Astronomy and Astrophysics
Astronomy
Electrophotometry, Polarization Characteristics, Stellar Spectrophotometry, Variable Stars, Colorimetry, Light Curve, Power Spectra, Time Series Analysis
Scientific paper
Results of photoelectric observations of brightness and polarization of V CVn from the beginning of 1977 to the middle of 1980 are presented, and light variations from 1966 to 1972 are studied by time series analysis. Two peaks of periodicities 181d and 200d are found in the power spectrum. The main feature in the polarization behavior of V CVn is the amplitude increase of position angle oscillations with decreasing light and polarization variations. This behavior is explained by the presence of antipodal active zones on the stellar surface in which average temperature is lower and sources of polarization exist. The activity cycle of V CVn is estimated to be 10-11 years and the rotation period to be about 380d.
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