Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.188..127e&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 188, no. 1, Feb. 1992, p. 127-135.
Astronomy and Astrophysics
Astrophysics
4
Eclipses, Light Curve, Ubv Spectra, Variable Stars, Ephemeris Time, Stellar Spectrophotometry
Scientific paper
Photoelectric B and V observations of the W UMa-type system OO Aql have been obtained for 11 nights during the period from 22 June-30 July, 1987. A total of 978 observations were obtained in each B and V filter. All these observations were transformed to the B and V colors of the UBV standard system. Five light curves for primary and secondary eclipses were obtained, its times of minima were determined and a new linear ephemeris was given. The period changes of the system were discussed.
El-Bassuni A. A.
Essam Ahmed
Mahdy Hamed A.
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