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The Light Curve Changes of VW Cephei
Author(s) -
Kotarska I.,
Glownia Z.
Publication year - 1983
Publication title -
astronomische nachrichten
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 63
eISSN - 1521-3994
pISSN - 0004-6337
DOI - 10.1002/asna.2113040407
Subject(s) - light curve , physics , astrophysics , maxima , homogeneous , maxima and minima , spectral density , photoelectric effect , binary number , amplitude , optics , statistical physics , mathematical analysis , statistics , mathematics , art , arithmetic , performance art , art history
A long series of photoelectric observations of the W UMa‐type eclipsing binary VW Cephei collected since 1952 is discussed. The so‐called K WEE effect is examined — regarding the heights of maxima and the depths of minima — in order to detect periodicities i n the light curve changes. The frequency analysis reveals periodicities at the small homogeneous observational domains only, but the power spectrum (in sence of DFT) of all observations is very complicated for exact interpretation. The light curve changes are entirely real much exceeding the possible errors, but they have lost their periodic character in the whole discussed time interval.