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arXiv 1003.0608astro-ph.SR
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共生星轨道周期的测光搜索

Photometric search of orbital periods in symbiotic stars

M. Wiecek, M. Mikolajewski, T. Tomov, M. Cikala, C. Galan, A. Majcher, E. Swierczynski, P. Wychudzki, P. Rozanski, S. Frackowiak, J. L. Janowski, D. Graczyk

摘要:

介绍了1997 - 2008年在托伦附近的Piwnice天文台对3颗共生星ZZ CMi、TX CVn和AG Peg进行的UBVRI测光。为了搜索这些恒星的轨道周期,使用了傅立叶分析。对于其中的两个,TX CVn和AG Peg,我们已经确认了较早的已知周期。对于ZZ CMi,我们发现了一个相对较短的周期218.59天。假设轨道周期是原来的两倍(P=437.18天),光变曲线中的双正弦波可以用椭球效应来解释。

英文摘要:

We present UBVRI photometry of three symbiotic stars ZZ CMi, TX CVn and AG Peg carried out from 1997 to 2008 in Piwnice Observatory near Torun. To search orbital periods of these stars Fourier analysis was used. For two of them, TX CVn and AG Peg, we have confirmed the earlier known periods. For ZZ CMi we found a relatively short period 218.59 days. Assuming, that the orbital period is twice longer (P=437.18 days), the double sine wave in the light curve can be interpreted by ellipsoidal effect.

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