Astronomy and Astrophysics – Astronomy
Scientific paper
May 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sass...28..197s&link_type=abstract
The Society for Astronomical Sciences 28th Annual Symposium on Telescope Science. Held May 19-21, 2009 at Big Bear Lake, CA. Pub
Astronomy and Astrophysics
Astronomy
Scientific paper
New times of minima and ephemeredes are presented on the over-contact system GR Tauri. An observed minus calculated (O-C), times of minimum chart was constructed and based on statistical analysis the orbital period of the system is found to be decreasing with a rate of dP/dE = 3.33^-4 seconds Yr^-1 since 1931. Both components are filling their respective critical Roche lobes with fillouts f = 0.11 and 0.95. The light curve displays the O'Connell effect which is discussed on the assumption mass is going from the primary to the secondary creating a hot spot. The TRO, thermal relaxation oscillations (Lucy & Wilson 1979), theory is discussed as an explanation.
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