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
TL;DR
This paper uses photometric data and Fourier analysis to identify and confirm orbital periods in three symbiotic stars, discovering a new period in ZZ CMi and confirming known periods in TX CVn and AG Peg.
Contribution
It introduces a method for detecting orbital periods in symbiotic stars using UBVRI photometry and Fourier analysis, including the discovery of a new period in ZZ CMi.
Findings
Confirmed known orbital periods for TX CVn and AG Peg.
Discovered a 218.59-day period in ZZ CMi.
Suggested ellipsoidal effect as explanation for ZZ CMi's light curve.
Abstract
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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Taxonomy
TopicsAstronomy and Astrophysical Research · Stellar, planetary, and galactic studies · Astronomical Observations and Instrumentation