<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Chochol, D.</style></author><author><style face="normal" font="default" size="100%">Pribulla, T.</style></author><author><style face="normal" font="default" size="100%">Vaňko, M.</style></author><author><style face="normal" font="default" size="100%">Mayer, P</style></author><author><style face="normal" font="default" size="100%">Wolf, M.</style></author><author><style face="normal" font="default" size="100%">Niarchos, P. G.</style></author><author><style face="normal" font="default" size="100%">Gazeas, K. D.</style></author><author><style face="normal" font="default" size="100%">Manimanis, V. N.</style></author><author><style face="normal" font="default" size="100%">Brát, L.</style></author><author><style face="normal" font="default" size="100%">Zejda, M.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Light-Time Effect in the Eclipsing Binaries GO Cyg, GW Cep, AR Aur and V505 Sgr</style></title><short-title><style face="normal" font="default" size="100%">Astrophysics and Space Science</style></short-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">Eclipsing binary</style></keyword><keyword><style  face="normal" font="default" size="100%">Light-time effect</style></keyword><keyword><style  face="normal" font="default" size="100%">Period changes</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2006/08/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/2006Ap&amp;SS.304...93C</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">304</style></volume><pages><style face="normal" font="default" size="100%">93 - 96</style></pages><isbn><style face="normal" font="default" size="100%">0004-640X</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Orbital period changes of the eclipsing binaries GO Cyg and GW Cep are explained by the light-time effect for the first time. New minima of the eclipsing binary AR Aur improve the predicted light-time orbit. The light-time orbit with the quadratic ephemeris of the binary matches the new observations of V505 Sgr better than the linear one. As the light-time effect fits in corresponding O - C diagrams of all four systems have been reaching extreme values, the observations of minima times in forthcoming years are highly desirable.</style></abstract></record></records></xml>