Multi-wavelength Monitoring of Stellar Flares in the Active Eclipsing Binary CU Cancri

CU Cancri_85cm_UBV.csv——Log of UBV-band photometric observations of CU~Cnc obtained with the 85-cm telescope at Xinglong Observatory.Columns are: (1) file name of the U-band image; (2) observation time in UTC for the U band;(3) normalised flux in the U band; (4) uncertainty of the normalised U-band flux;(5) file name of the B-band image; (6) observation time in UTC for the B band;(7) normalised flux in the B band; (8) uncertainty of the normalised B-band flux;(9) file name of the V-band image; (10) observation time in UTC for the V band;(11) normalised flux in the V band; and (12) uncertainty of the normalised V-band flux. Flares_Parameters.csv——This table summarises the parameters of 1047 flare events detected on CU~Cancri. Columns are:(1) event index;(2)--(3) Flare start and end times.Flares 1–74 were detected by TESS and are given in TESS spacecraft time (BTJD = BJDTDB − 2457000), in units of days. Flares 75–1047 were detected byKepler and are given in Kepler spacecraft time (BKJD = BJDTDB − 2454833), in units of days;(4) equivalent duration (ED) in seconds;(5) flare amplitude in relative flux units;(6) flare duration in days;(7) estimated bolometric flare energy in erg.