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凤凰座SX型变星CY Aqr光变周期长期变化研究的新进展
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作者 李春 付建宁 +1 位作者 张燕平 蒋世仰 《北京师范大学学报(自然科学版)》 CAS CSCD 北大核心 2007年第6期621-623,共3页
通过对凤凰座SX型变星CY Aqr的观测测定了2个新的光变极大时刻,并利用文献中光变曲线资料得出了3个新的光变极大时刻.结合已发表的数据点,拟合得出新的极大时刻计算公式,并作出了O-C图.用新的数据检验现有的两种解释该星周期变化的理论... 通过对凤凰座SX型变星CY Aqr的观测测定了2个新的光变极大时刻,并利用文献中光变曲线资料得出了3个新的光变极大时刻.结合已发表的数据点,拟合得出新的极大时刻计算公式,并作出了O-C图.用新的数据检验现有的两种解释该星周期变化的理论表明轨道光时效应模型更为合理. 展开更多
关键词 脉动变星 凤凰座sx型变星 CY Aqr 脉动周期稳定性
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Discrete Scale Relativity and SX Phoenicis Variable Stars
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作者 Robert L Oldershaw 《International Journal of Astronomy and Astrophysics》 2011年第2期39-44,共6页
Discrete Scale Relativity proposes a new symmetry principle called discrete cosmological self-similarity which relates each class of systems and phenomena on a given Scale of nature’s discrete cosmological hierarchy ... Discrete Scale Relativity proposes a new symmetry principle called discrete cosmological self-similarity which relates each class of systems and phenomena on a given Scale of nature’s discrete cosmological hierarchy to the equivalent class of analogue systems and phenomena on any other Scale. The new symmetry principle can be understood in terms of discrete scale invariance involving the spatial, temporal and dynamic parameters of all systems and phenomena. This new paradigm predicts a rigorous discrete self-similarity between Stellar Scale variable stars and Atomic Scale excited atoms undergoing energy-level transitions and sub-threshold oscillations. Previously, methods for demonstrating and testing the proposed symmetry principle have been applied to RR Lyrae, δ Scuti and ZZ Ceti variable stars. In the present paper we apply the same analytical methods and diagnostic tests to a new class of variable stars: SX Phoenicis variables. Double-mode pulsators are shown to provide an especially useful means of testing the uniqueness and rigor of the conceptual principles and discrete self-similar scaling of Discrete Scale Relativity. These research efforts will help theoretical physicists to understand the fundamental discrete self-similarity of nature, and to model both stellar and atomic systems with one unified physics. 展开更多
关键词 DISCRETE Scale RELATIVITY sx phe Variables RYDBERG ATOMS Quantum COSMOLOGY
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