9,6-Year periodicity of symbiotic nova RT Ser (1909) during the outburst decay from 1940 to 1994

Details 9,6-Year periodicity of symbiotic nova RT Ser (1909) during the outburst decay from 1940 to 1994 9,6-Year periodicity of symbiotic nova RT Ser (1909) during the outburst decay from 1940 to 1994

Jan 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996ap.....39...15p&link_type=abstract

Astrophysics, Volume 39, Issue 1, pp.15-19

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The behavior of the symbiotic nova RT Ser from 1940 to 1994 from photographic observations made at the Gissar Observatory (1940 1978) and BVR-band observations at the Crimean Observatory (1983 1994) is analyzed. The outburst lightcurve shows a linear decline at a rate of 0m.06 per year. It appears from the nature of the outburst attenuation that the fading, having already lasted about 80 yr, is still continuing. Judging from the color indices, the principal contribution to the visible light from the system is made by a cool, late-type red giant and hot gas the source of which is, as yet, unknown. The photometric variability observed in the BVR bands with a characteristic time of 10 yr is confirmed by photographic observations of 1928 1978. The period determined from all the data is 9.6 yr and is most likely orbital.

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