Superflare activity on the southern active binary CC Eri

Superflares are a subject of interest for the last decade when the first statistical analysis of
superflares was conducted. So far superflares have been observed spectroscopically recently in
Halpha only and in the past very rarely. We present Echelle spectroscopic monitoring of the
young and active southern dK+dM dwarf binary CC Eri. More than 2000 spectra have been recorded
summing up to 190 hours of on source time. The spectra have been obtained through the
PlatoSpec consortium at the ESO1.52m telescope on LaSilla, Chile. In addition to the spectroscopic
monitoring, the ESO1.52m is capable of doing ccordinated g'-band photometry. We have
detected so far 18 flares determined from Halpha equivalent width light curves and two from
photometry. The two g'-band flares reveal superflare energies and one Halpha flare alone
shows already superflare energies. We have identified several line asymmetries occuring during
the flares from which we show two examples. We furthermore discuss preliminary results of
comparative spectral line analysis between flares and superflares.

Theme(s): The Sun and Cool Stars in the Time Domain, Cool Stars as Stellar Systems