天文学进展Issue(2)：137-147,11.DOI:10.3969/j.issn.1000-8349.2014.02.01
天琴座RR 型变星的Blazhko 效应
The Blazhko Effect of RR Lyrae Variables
摘要
Abstract
The Blazhko effect, the amplitude and/or phase modulation of the light curves of a fraction of the RR Lyrae variables, was discovered more than one century ago. Extensive observational and theoretical studies of the Blazhko effect have been done since then, yet the physical reason of the effect is still unknown. Specifically, with the help of high precision and long-time coverage data from space telescopes such as Kepler and CoRoT telescopes, a lot of new observational properties of the Blazhko effect have been revealed. Statistics on the incidence rate of the Blazhko stars among the RR Lyrae variables show that the Blazhko effect is quite common. The Blazhko modulation itself is not periodic or regular in many Blazhko RR Lyrae stars, which is in contradiction with traditional definition of the effect. Physical parameters of the Blazhko variables vary among different Blazhko cycles. Moreover, RR Lyrae variables might not be purely radial pulsating stars as non-radial modes are suspected in several Blazhko stars. We first summarize the observational progress in the Blazhko effect of the RR Lyrae variables over the past decades, then we review the existing theoretical models in the literature. We conclude that none of the current models can explain all the observational properties. As such, theoretic studies of the Blazhko effect deserve much attention.关键词
天琴座RR型变星/Blazhko效应/光变曲线/相位调制Key words
RR Lyrae variables/Blazhko effect/light curve/phase modulation分类
天文与地球科学引用本文复制引用
黄志华,付建宁,Sódor Ádam..天琴座RR 型变星的Blazhko 效应[J].天文学进展,2014,(2):137-147,11.基金项目
国家自然科学基金(U1231202)；973项目(2014CB845700，2013CB834900) （U1231202）
