CAOSP abstracts, Volume: 26, No.: 1, year: 1996

Abstract: We present new observations of 11 symbiotic and symbiotic-like stars. The photoelectric UBV(R) observations described here cover the period spanning from 1994.75 to 1996.0. Some CCD VRI and photographic data were obtained also during the earlier times. The main results obtained during this campaign period can be summarized as follows: Z And: The UBV light curves (LC) indicate a small brightening of the star around JD 2 449 750. EG And: Standard phase dependent behavior -- an increase in the star's brightness from orbital phase phi approx 0 (around JD 2 449 700) to phi approx 0.7 (approx JD 2 450 050) - is apparent in our light curves. UV Aur: Two approx 390-day cycles were covered by our observations. Variations in the V and R bands are similar. TX CVn: Very slow brightness decline from the previous active stage has continued during the present period. BF Cyg: A minimum around JD 2 449 900 was observed - in agreement with the ephemeris given by Pucinskas (1970). CH Cyg: During the period Oct. 15th 1994 -- Jan 16th 1995 a minimum corresponding to the eclipse of the hot component by the red giant occurred. The sudden fading of the star in the U and B colours suggests that the 1992 outburst is over. AG Dra: The present data cover a major part of the recent (1994) outburst. A second maximum has been observed during the summer of 1995. Afterwards, the system's brightness has been declining towards the quiescence.

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