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 532 flare events detected on CU Cancri. Columns are: (1) event index; (2)–(3) flare start and end times. All flares were detected in Kepler/K2 data and are given in Kepler spacecraft time (BKJD = BJDTDB − 2454833), in units of days. Flares 1–520 were identified from the short-cadence data, whereas flares 521–532 were identified from the long-cadence data. (4) equivalent duration (ED), in seconds; (5) flare amplitude, in relative flux units; (6) flare duration, in days; and (7) estimated bolometric flare energy, in erg. For the long-cadence flares (Nos 521–532), bolometric flare energies were not calculated, and the corresponding entries in column (7) are therefore left blank.CU Cancri_85cm_UBV.csv——该数据集记录了使用兴隆天文台85厘米望远镜获得的巨蟹座CU星（CU Cnc）的UBV波段测光观测日志。各列信息如下： (1) U波段图像文件名；(2) U波段观测的协调世界时（UTC）时间；(3) U波段归一化流量；(4) U波段归一化流量的不确定度；(5) B波段图像文件名；(6) B波段观测的协调世界时时间；(7) B波段归一化流量；(8) B波段归一化流量的不确定度；(9) V波段图像文件名；(10) V波段观测的协调世界时时间；(11) V波段归一化流量；(12) V波段归一化流量的不确定度。 Flares_Parameters.csv——该表格汇总了在巨蟹座CU星上探测到的532次耀斑事件的参数。各列信息如下： (1) 事件编号；(2)~(3) 耀斑的起始与结束时间。所有耀斑均从开普勒/K2任务的观测数据中探测得到，采用开普勒航天器时间（BKJD = BJDTDB − 2454833）标注，单位为天。其中1~520号耀斑由短周期测光数据识别得到，521~532号耀斑由长周期测光数据识别得到。(4) 等效持续时间（ED），单位为秒；(5) 耀斑振幅，单位为相对流量单位；(6) 耀斑持续时间，单位为天；(7) 估算的耀斑总辐射能量，单位为尔格（erg）。对于长周期数据对应的耀斑（编号521~532），未计算其总辐射能量，因此第(7)列的对应条目留空。