Photometry of symbiotic stars - an international campaign. III. Z And, EG And, R Aqr, UV Aur, TX CVn, T CrB, BF Cyg, CH Cyg, CI Cyg, V 1016 Cyg, V 1329 Cyg, AG Dra, CQ DRA (4 Dra), YY Her, V 443 Her, SS Lep, RS Oph, AG Peg, AX Per, HM Sge, FG SER (AS 296),

Details Photometry of symbiotic stars - an international campaign. III. Z And, EG And, R Aqr, UV Aur, TX CVn, T CrB, BF Cyg, CH Cyg, CI Cyg, V 1016 Cyg, V 1329 Cyg, AG Dra, CQ DRA (4 Dra), YY Her, V 443 Her, SS Lep, RS Oph, AG Peg, AX Per, HM Sge, FG SER (AS 296), Photometry of symbiotic stars - an international campaign. III. Z And, EG And, R Aqr, UV Aur, TX CVn, T CrB, BF Cyg, CH Cyg, CI Cyg, V 1016 Cyg, V 1329 Cyg, AG Dra, CQ DRA (4 Dra), YY Her, V 443 Her, SS Lep, RS Oph, AG Peg, AX Per, HM Sge, FG SER (AS 296),

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992coska..22..131s&link_type=abstract

Contributions of the Astronomical Observatory Skalnate Pleso, vol. 22, p. 131-172.

Astronomy and Astrophysics

Astronomy

31

Stars, Binaries, Symbiotic, Photometry

Scientific paper

We present new photoelectric (UBV), photographic and visual observations of 22 selected symbiotic stars. The photoelectric observations were made in 1990-91, the photographic in 1982-91, while the visual observations cover the interval 1973-1991. Some interesting results can be summarized as follows: EG And: Descending branches of the light-curve preceding primary and secondary minima were observed in U. R Aqr: Visual observations confirm the variability with the 44-year period. UV Aur: The 365-day pulsation period of the red giant was confirmed. The most conspicuous change (7.2 - 10.4 mag) was observed in the red band. BF Cyg: The eclipse of the hot component by the cool one was observed between June and September 1991. Its position allowed to determine a new average value of the orbital period equal to 759 days. CH Cyg: A sudden drop of the star's brightness in U, by about 1.5 mag lasting a few days to a few weeks was observed at the beginning of July 1991. 4 Dra: An 0.30 mag increase in U, lasting about 100 days, was observed near the time of spectroscopic conjunction. V 443 Her: A minimum around JD 2 448 433 was observed in several spectral bands. AG Peg: A decrease of the star's brightness near the orbital phase 0.5 was indicated. AX Per: The primary minimum corresponding to the total eclipse of the hot component by the cool one was observed between October 27, 1990 and January 14, 1991.

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Photometry of symbiotic stars - an international campaign. III. Z And, EG And, R Aqr, UV Aur, TX CVn, T CrB, BF Cyg, CH Cyg, CI Cyg, V 1016 Cyg, V 1329 Cyg, AG Dra, CQ DRA (4 Dra), YY Her, V 443 Her, SS Lep, RS Oph, AG Peg, AX Per, HM Sge, FG SER (AS 296), does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

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