CI Cygni: the eclipse of the hot component, which is in strong outburst, is entering the phase of totality

Details CI Cygni: the eclipse of the hot component, which is in strong outburst, is entering the phase of totality CI Cygni: the eclipse of the hot component, which is in strong outburst, is entering the phase of totality

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010atel.2913....1m&link_type=abstract

The Astronomer's Telegram, #2913

Astronomy and Astrophysics

Astronomy

1

Optical, Binary, Cataclysmic Variable, Nova

Scientific paper

The symbiotic star CI Cyg is undergoing a major outburst phase that begun in 2008 (Munari et al. 2008, CBET #1487, Siviero et al. 2009, MNRAS 399, 2139), the first one after 30 years of flat quiescence. The current outburst phase is a close copy of the multi-maxima eruption that CI Cyg experienced in 1970-78. After a maximum at B=10.28, V=9.50, V-Rc+0.80, V-Ic=+2.07 that occurred on the first week of October 2008, the star started to decline, reaching a minimum brightness B=12.1, V=11.0, V-Ic=+3.2 during March, 2010, values which are not too far away from to those observed during the long preceding quiescence.

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