Superflare activity on the southern active binary CC Eri
Superflares are a subject of interest for the last decade when the first statistical analysis ofsuperflares was conducted. So far superflares have been observed spectroscopically recently inHalpha only and in the past very rarely. We present Echelle spectroscopic monitoring of theyoung and active southern dK+dM dwarf binary CC Eri. More than 2000 spectra have been recordedsumming up to 190 hours of on source time. The spectra have been obtained through thePlatoSpec consortium at the ESO1.52m telescope on LaSilla, Chile. In addition to the spectroscopicmonitoring, the ESO1.52m is capable of doing ccordinated g'-band photometry. We havedetected so far 18 flares determined from Halpha equivalent width light curves and two fromphotometry. The two g'-band flares reveal superflare energies and one Halpha flare aloneshows already superflare energies. We have identified several line asymmetries occuring duringthe flares from which we show two examples. We furthermore discuss preliminary results ofcomparative spectral line analysis between flares and superflares. Theme(s): The Sun and Cool Stars in the Time Domain, Cool Stars as Stellar Systems
Institutions
- University of Graz (AT)
- Czech Academy of Sciences, Astronomical Institute (CZ)
- Thüringer Landessternwarte Tautenburg (DE)
- Rajiv Gandhi Charitable Trust (IN)
Publication Details
- Journal
- Zenodo (CERN European Organization for Nuclear Research)
- Published
- 2024-09-02
- DOI
- https://doi.org/10.5281/zenodo.13627897
- Primary Topic
- PI3K/AKT/mTOR signaling in cancer
- Type
- article
- Field-Weighted Citation Impact
- 0.00