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The period variation of the double mode high amplitude δ Scuti variable VZ Cnc

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Abstract

VZ Cnc is a population I double mode high amplitude δ Scuti 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 1.4×10−8 per year; this is compatible with the stellar evolution model calculation both in direction and size.

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Authors and Affiliations

  1. Department of Physics, Faculty of Science, Naresuan University, Phitsanulok, 65000, Thailand

    Chayan Boonyarak & Pongsak Khokhuntod

  2. National Astronomical Observatory of China, Chinese Academy of Sciences, Datun Road 20A, Beijing, 100086, China

    Shi-Yang Jiang

Authors
  1. Chayan Boonyarak
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  2. Pongsak Khokhuntod
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  3. Shi-Yang Jiang
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Correspondence to Chayan Boonyarak.

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Boonyarak, C., Khokhuntod, P. & Jiang, SY. The period variation of the double mode high amplitude δ Scuti variable VZ Cnc. Astrophys Space Sci 324, 5 (2009). https://doi.org/10.1007/s10509-009-0147-y

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  • DOI: https://doi.org/10.1007/s10509-009-0147-y

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