ci cygni

Symbiotic star ci Cygni is going on eclipse these last weeks with a Mv dropping to 11.4. The period of the system is about 853 days and maximum is awaited for mid November At the same time the system has an ongoing outburst from the disk around the white dwarf whose began in July and certainly continue and repeated for months. The conjunction of an outburst and an eclipse is a unique chance for probing the inner regions of this strange object composed by a M dwarf type star and a White dwarf. The Aras group... [Lire la suite]