394 research outputs found
Long-term orbital period behaviour of low mass ratio contact binaries GR Vir and FP Boo
No full text32nd International Physics Congress of Turkish-Physical-Society (TPS) -- SEP 06-09, 2016 -- Bodrum, TURKEYIn this study, we investigated orbital period variations of two low mass ratio contact binaries GR Vir and FP Boo based on published minima times. From the O-C analysis, it was found that FP Boo indicates orbital period decrease while the period of GR Vir is increasing. Mass transfer process was used to explain increase and decrease in the orbital periods. In the O-C diagrams of both systems periodic variations also exist. Cyclic changes can be explained as being the result of a light-travel time effect via a third component around the eclipsing binaries. In order to interpret of cyclic orbital period changes for GR Vir, which has late-type components, possible magnetic activity cycles of the components have been also considered.Turkish Phys So
Orbital parameters of the multiple system EM Boo
No full text33rd International Physics Congress of the Turkish-Physical-Society (TPS) -- SEP 06-10, 2017 -- Bodrum, TURKEYEM Boo is a relatively bright (V = 8.98 mag.) and short orbital period (P similar to 2.45 days) binary star member of the multiple system WDS J14485+2445AB. There is neither photometric nor spectroscopic study of the system in the literature. In this work, we obtained spectroscopic orbital parameters of the system from new high resolution spectroscopic observations made with echelle spectrograph attached to UBT60 telescope of Akdeniz University. The spectroscopic solution yielded the values K-1 = 100.7 +/- 2.6 km/s, K-2 = 120.1 +/- 2.6 km/s and V-gamma = -14.6 +/- 3.1 km/s, and thus the mass ratio of the system q = 0.838 +/- 0.064.Turkish Phys So
An Author looks Back
No full textPAUL AUSTER: I DON’T EVEN KNOW IF THE NEW YORK TRILOGY IS VERY GOOD.AN AUTHOR LOOKS BACK AT HIS MOST WELL-KNOWN BOO
SC author and illustrator Kate Salley Palmer signing book
No full textPhotograph of SC author and illustrator Kate Salley Palmer signing boo
Learning Shuswap book 2 tape 1 side A [sound recording]
No full textCorresponds to pages 1-12 of Learning Shuswap boo
Learning Shuswap book 2 tape 1 side A [sound recording]
No full textCorresponds to pages 1-12 of Learning Shuswap boo
Adventures in cooking
No full textCover title: British Columbia Women's Institutes : centennial cook boo
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