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Stability in period and amplitude: The high-amplitude delta Scuti star YZ Bootis
Zhou, AY
2006
发表期刊ASTROPHYSICS AND SPACE SCIENCE
卷号301期号:1-4页码:11-20
摘要The variability of period and amplitude of the high-amplitude delta Scuti star YZ Boo was thoroughly investigated based on a comprehensive analysis of new time-series photometry and other available data. Fourier analysis, O-Cdiagram, and wavelet analysis establish a clear picture for the star's time-dependent behavior in period and amplitude. We detected no additional frequencies being intrinsic to the variable or caused by amplitude/frequency modulation confirming its mono-periodicity. We reveal the pulsation of YZ Boo is quite stable in both period and amplitude over the past 50 years. Short-term variations at cycle level including "anomalous cycles" are present clearly, while long-term variations in period and amplitude at annual base are insignificant. However, we note an increment from 2000 to 2003 in both period and amplitude. In 2000 the amplitude reached the lowest. This is indicated by the Fourier and wavelet results. In the long term, O-Cfits and wavelet analysis agree with the Fourier results that the period change of YZ Boo is still inconclusive.
关键词Stars : Variable : Delta Scuti Stars Stars : Oscillations Stars : Individual : Yz Bootis
DOI10.1007/s10509-006-4964-y
收录类别SCI
语种英语
WOS记录号WOS:000235246200003
引用统计
文献类型期刊论文
条目标识符http://ir.bao.ac.cn/handle/114a11/8943
专题射电天文研究部
作者单位Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China
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Zhou, AY. Stability in period and amplitude: The high-amplitude delta Scuti star YZ Bootis[J]. ASTROPHYSICS AND SPACE SCIENCE,2006,301(1-4):11-20.
APA Zhou, AY.(2006).Stability in period and amplitude: The high-amplitude delta Scuti star YZ Bootis.ASTROPHYSICS AND SPACE SCIENCE,301(1-4),11-20.
MLA Zhou, AY."Stability in period and amplitude: The high-amplitude delta Scuti star YZ Bootis".ASTROPHYSICS AND SPACE SCIENCE 301.1-4(2006):11-20.
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