CAOSP abstracts, Volume: 29, No.: 2, year: 1999

Abstract: Multicolour photoelectric observations of the eclipsing binaries ZZ Cru, RU Gru and DT Lup obtained in 1965 and 1968 using Walraven ULBV filters are presented. Photometric elements of the binaries, determined by Wilson-Devinney's code, classify ZZ Cru as a semi-detached, RU Gru as a detached and DT Lup as an almost detached system. Application of the Horak's limb-darkening scan technique for computation of photometric elements is given for these binaries.

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