Table 2.
Confirmed flare candidates detected in open cluster stars observed by K2, sorted by amplitude a.
| EPIC | C | Cluster | c0 | c1 | a | Teff [K] | ED [s] | Lbol, * [erg s−1] | LKp [erg s−1] |
|---|---|---|---|---|---|---|---|---|---|
| 211079830 | 4 | Pleiades | 105984 | 105993 | 15.330194 | 3097(87) | 63340(63) | 8.29(3.34)1029 | 3.32(1.34)1029 |
| 210720772 | 4 | Pleiades | 107181 | 107184 | 9.674757 | 3104(86) | 19901(7) | 8.66(3.45)1029 | 3.48(1.38)1029 |
| 247523445 | 13 | Hyades | 143106 | 143109 | 8.260956 | 2964(49) | 16615(11) | 4.33(1.09)1029 | 1.69(0.43)1029 |
| 212021131 | 5 | Praesepe | 108974 | 108980 | 7.421916 | 3215(68) | 19828(175) | 2.01(0.65)1030 | 8.22(2.65)1029 |
| 210978953 | 4 | Pleiades | 106762 | 106770 | 6.769888 | 3050(95) | 39467(125) | 6.20(2.63)1029 | 2.46(1.04)1029 |
| 211913613 | 16 | Praesepe | 156845 | 156849 | 6.690356 | 3218(66) | 21632(147) | 2.05(0.65)1030 | 8.37(2.63)1029 |
| 211127297 | 4 | Pleiades | 106754 | 106759 | 6.449569 | 3147(86) | 20830(5) | 1.13(0.45)1030 | 4.59(1.81)1029 |
| 211681193 | 5 | Praesepe | 108116 | 108120 | 5.570804 | 3182(76) | 11198(95) | 1.64(0.58)1030 | 6.68(2.37)1029 |
| 211024798 | 4 | Pleiades | 104822 | 104826 | 5.394897 | 3290(62) | 12524(63) | 2.58(0.75)1030 | 1.06(0.31)1030 |
| 211134185 | 4 | Pleiades | 103891 | 103896 | 4.951629 | 3127(96) | 17459(33) | 9.99(4.33)1029 | 4.03(1.75)1029 |
| 211095280 | 4 | Pleiades | 106283 | 106287 | 4.796979 | 3138(93) | 12186(10) | 1.06(0.45)1030 | 4.32(1.82)1029 |
| 211022535 | 4 | Pleiades | 104262 | 104267 | 3.994973 | 2953(76) | 15164(57) | 3.50(1.10)1029 | 1.37(0.43)1029 |
| 211010517 | 4 | Pleiades | 106680 | 106685 | 3.968907 | 3252(70) | 16241(171) | 2.09(0.68)1030 | 8.59(2.77)1029 |
| 210846442 | 4 | Pleiades | 104410 | 104415 | 3.959977 | 3311(79) | 13515(10) | 2.88(0.96)1030 | 1.18(0.40)1030 |
| 212017838 | 5 | Praesepe | 111183 | 111192 | 3.671037 | 3307(89) | 10274(10) | 3.35(1.22)1030 | 1.38(0.50)1030 |
| 211984058 | 5 | Praesepe | 109952 | 109965 | 3.320636 | 3124(97) | 16063(149) | 1.17(0.51)1030 | 4.73(2.06)1029 |
| 211912899 | 5 | Praesepe | 110700 | 110706 | 3.257997 | 3133(81) | 7967(16) | 1.24(0.47)1030 | 5.01(1.89)1029 |
| 211151674 | 4 | Pleiades | 106457 | 106467 | 3.166323 | 3072(93) | 17843(106) | 7.10(2.99)1029 | 2.84(1.19)1029 |
| 211822895 | 5 | Praesepe | 107809 | 107812 | 3.164494 | 3005(177) | 6883(31) | 5.68(3.98)1029 | 2.25(1.57)1029 |
| 211760567 | 5 | Praesepe | 109962 | 109965 | 3.061417 | 3245(58) | 7838(9) | 2.39(0.69)1030 | 9.84(2.83)1029 |
| 211939350 | 16 | Praesepe | 155018 | 155022 | 2.892939 | 3149(150) | 9542(68) | 1.36(0.86)1030 | 5.52(3.49)1029 |
| 211137806 | 4 | Hyades | 106768 | 106775 | 2.482828 | 3127(58) | 9208(8) | 1.16(0.35)1030 | 4.69(1.40)1029 |
| 210674207 | 13 | Hyades | 141708 | 141711 | 2.419586 | 3210(74) | 5343(3) | 1.90(0.65)1030 | 7.78(2.66)1029 |
| 211994910 | 5 | Praesepe | 109858 | 109864 | 2.401426 | 3325(95) | 7807(14) | 3.71(1.40)1030 | 1.53(0.58)1030 |
| 211010517 | 4 | Pleiades | 106561 | 106564 | 2.341076 | 3252(70) | 4838(36) | 2.09(0.68)1030 | 8.59(2.77)1029 |
| 211984058 | 5 | Praesepe | 108584 | 108587 | 2.155468 | 3124(97) | 4817(13) | 1.17(0.51)1030 | 4.73(2.06)1029 |
| 211983544 | 18 | Praesepe | 162792 | 162798 | 2.096077 | 3159(98) | 6924(55) | 1.44(0.63)1030 | 5.88(2.55)1029 |
| 210988354 | 4 | Pleiades | 106012 | 106017 | 2.057812 | 3661(144) | 5725(1) | 1.40(0.31)1031 | 6.06(1.32)1030 |
| 210886447 | 4 | Pleiades | 103871 | 103877 | 2.057490 | 3048(105) | 8710(49) | 6.13(2.83)1029 | 2.43(1.12)1029 |
| 211098921 | 4 | Pleiades | 105254 | 105262 | 2.041041 | 3300(101) | 7499(5) | 2.72(1.10)1030 | 1.12(0.45)1030 |
Notes. The full table is available at CDS. EPIC and C denote the K2 ID and observing campaign. a − relative flare amplitude, c0 and c1 − flare start and end cadence numbers, Teff − stellar effective temperature, ED − equivalent duration, Lbol, * − projected stellar bolometric luminosity, LKp – projected stellar luminosity in the Kepler band. Uncertainties are given in parentheses.
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