Analysis of the light curves of SZ Cam using automatized fourier techniques
Analysis of the light curves of SZ Cam using automatized fourier techniques
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使用自动傅立叶技术分析 SZ Cam 的光变曲线
DOI：
10.1007/bf00644387
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发表时间：
1977
影响因子：
1.9
通讯作者：
E. Budding
中科院分区：
文献类型：
--
作者：
E. Budding
用新近发展起来的频域技术研究了早型近食双星系统SZ-Cam的UBV光曲线。这两个极小值在分析中的组合导致了比迄今讨论的单一极小值方法明显的方法学改进。这种改进有两个方面：(I)提高了所确定元素的精度；(Ii)两个最小值法的结果与单最小值法的结果的一致性提供了一种标准，由此可以评估基本模型的自相合性及其对余弦序列的最小值和这种序列的经验确定的系数之间区域中的光曲线的表示。找到了这样一个“自洽”的解决方案，并通过包括“光度学扰动”进一步向真实的表示迈进了一步。从这三条光曲线可以确定，质量较小的那颗恒星亮度过高。较大质量恒星的边缘暗化系数随波长减小而增大的可能趋势也被注意到了。
UBV light curves of the early type close eclipsing binary system SZ Cam have been investigated using recently developed frequency-domain techniques. The combination of both minima in the analysis results in a distinct methodological improvement over the single minimum method discussed hitherto. This improvement has two aspects: (i) increased accuracy of the determined elements, (ii) agreement of the results of the two-minimum method with those of the single-minimum method provides a criterion whereby the self-consistency of the underlying model with its representation of the light curve in the regions between minima by a cosine series and the empirically determined coefficients of such a series may be assessed. Such a ‘self-consistent’ solution is found, and a further step towards a realistic representation is made by including the ‘photometric perturbations’. It is confirmed from these three light curves that the less massive star is overluminous. A probable tendency for the limb-darkening coefficient of the more massive star to increase with decreasing wavelength is also noted.