A Period Study of the Eclipsing Binary U Sagittae

Details A Period Study of the Eclipsing Binary U Sagittae A Period Study of the Eclipsing Binary U Sagittae

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aj....133.1302m&link_type=abstract

The Astronomical Journal, Volume 133, Issue 4, pp. 1302-1306 (2007).

Astronomy and Astrophysics

Astronomy

5

Binaries: Eclipsing, Stars: Individual: U Sagittae

Scientific paper

The O - C curve of the eclipsing binary U Sagittae was analyzed using the Kalimeris method. A period decrease was indicated by this curve. The observed period P(E) and its rate of change dP/dE as a function of time were calculated. To reveal any cyclic period variations, the P(E) function was subjected to Fourier analysis. A cyclic period change of 9.5 yr duration with amplitude ΔP = 6.385 × 10-6 days was obtained. The mass transfer rate for the system was calculated, and these results have been used to discuss period variability.

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