Abstract
The aim of this paper will be to present the geometrical elements of a group of totally-eclipsing close binary systems of W UMa-type, evaluated in the frequency-domain by a method developed recently by one of us (Kopal, 1982a, b) which takes account of photometric effects caused by mutual distortion of the components within eclipses.
The outcome discloses that the geometry of such systems conforms more closely to that of a pair of contact configurations of the respective mass-ratio than that previously deduced from the same photometric evidence by more elementary methods; and strengthens our earlier surmise (Kopal, 1955) that the components of such systems are not actually separated from each other by any significant gap.
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Jabbar, S.R., Kopal, Z. The geometrical elements of 10 totally-eclipsing systems of the type of W Ursae Maioris. Astrophys Space Sci 92, 99–104 (1983). https://doi.org/10.1007/BF00653589
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DOI: https://doi.org/10.1007/BF00653589