The period variation of the double mode high amplitude δ Scuti variable VZ Cnc
The period variation of the double mode high amplitude δ Scuti variable VZ Cnc
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DOI：
10.1007/s10509-009-0147-y
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发表时间：
2009-09
影响因子：
1.9
通讯作者：
C. Boonyarak;P. Khokhuntod;Shi-yang Jiang
中科院分区：
文献类型：
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作者：
C. Boonyarak;P. Khokhuntod;Shi-yang Jiang
VZ数控是一款Popular I双模高幅值δSCUTI变速器。我们观测了这颗恒星，并收集了2007年1月至2009年1月的数据，确定了14次最大光强。我们还从其他论文和IBVS中检索了它的最大光照时间，得到了57个值。我们总共收集了194次最大光强，并用它们进行了(O-C)分析，得出的结论是可能不存在双轨光时效应的趋势。但从抛物线趋势来看，它呈现出以每年1.4×10−8的速度连续增长的周期，这与恒星演化模型的计算在方向和大小上都是一致的。
VZ Cnc is a population I double mode high amplitudeδScuti variable. We observed the star and collected the data from January 2007 to January 2009 to determine 14 times of maximum light. We also searched its times of maximum light from other papers and from IBVS and got 57 values. We collected a total of 194 times of maximum light and used them to perform an (O-C) analysis and concluded that there may be no tendency of binary orbital light time effect. But by parabola tendency, it shows a continuous period increasing at the rate of 1.4×10−8per year; this is compatible with the stellar evolution model calculation both in direction and size.