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The photometric study of the symbiotic binary YY Her. I. The eclipsing model

Citation:

Hric L, Gális R, Niarchos P, Dobrotka A, Šimon V, Šmelcer L, Velič Z, Hájek P, Gazeas K, Sobotka P, et al. The photometric study of the symbiotic binary YY Her. I. The eclipsing model. [Internet]. 2006;36:26 - 46.

Abstract:

The extensive long-term CCD and photoelectric photometric observations of the classical symbiotic star YY Her covering the period of its post-outburst activity (JD 2 451 823 -- 2 452 996) are presented. We explain the periodic variations of the brightness of YY Her by the eclipses of the components in the symbiotic system. The model with a deformed (non-homogeneous) envelope, surrounding the white dwarf is discussed. In addition, we observed a flare in about JD 2 452 440, during the primary minimum, that was later followed by an energetic outburst in JD 2 452 700.

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