<?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%">Kolenberg, K.</style></author><author><style face="normal" font="default" size="100%">Ulus, N. D.</style></author><author><style face="normal" font="default" size="100%">Beck, 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%">Tsantillas, S.</style></author><author><style face="normal" font="default" size="100%">Robertson, C. W.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Follow-up campaign of the Blazhko star RR Lyr</style></title><short-title><style face="normal" font="default" size="100%">Communications in Asteroseismology</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year><pub-dates><date><style  face="normal" font="default" size="100%">2008/12/1</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://ui.adsabs.harvard.edu/abs/2008CoAst.157..323K</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">157</style></volume><pages><style face="normal" font="default" size="100%">323 - 324</style></pages><isbn><style face="normal" font="default" size="100%">1021-2043</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Stars with changing Blazhko periods challenge the currently proposed hypotheses for the Blazhko effect. RR Lyr, the prototype of the class, is one of the best-studied Blazhko stars but it keeps on surprising its observers. We present the first results from a photometric follow- up campaign in 2006-2007 of the star. Multicolour data were gathered from 4 different observatories in the northern hemisphere. Our analysis focuses specifically on the period behaviour. We confirm the previously reported decrease of the modulation period.</style></abstract></record></records></xml>