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Table 3

Spread of the (red and blue) clumps in the V, I and K bands for populations with Y = 0.25 (FG), Y = 0.35 (SG), and the mixed population (multiple).

t clump V mean σ V I mean σ I K mean σ K ΔVHe−b ΔIHe−b ΔKHe−b
Myr mag mag mag mag mag mag mag mag mag

tFG = 40 red –4.414 0.081 –5.577 0.075 –7.426 0.085 0.509 0.408 0.305
tSG = 20 –5.590 0.246 –6.546 0.061 –7.952 0.341 0.897 0.288 0.939
multiple –4.661 0.498 –5.781 0.401 –7.537 0.276 1.769 1.270 1.148

tFG = 40 blue –5.299 0.044 –5.401 0.067 –5.462 0.116 0.223 0.304 0.469
tSG = 20 –6.121 0.225 –6.195 0.257 –6.184 0.324 0.833 1.017 1.349
multiple –5.926 0.401 –6.007 0.407 –6.013 0.422 1.359 1.507 1.737

tFG = 50 red –3.996 0.052 –5.134 0.066 –6.944 0.091 0.200 0.248 0.326
tSG = 30 –4.578 0.022 –5.761 0.024 –7.633 0.031 0.136 0.133 0.142
multiple –4.301 0.334 –5.463 0.365 –7.306 0.410 1.891 2.203 2.653

tFG = 50 blue –4.926 0.046 –5.082 0.107 –5.225 0.240 0.227 0.485 1.026
tSG = 30 –5.311 0.169 –5.348 0.213 –5.268 0.307 0.788 1.078 1.531
multiple –5.172 0.231 –5.252 0.223 –5.253 0.285 1.061 1.210 1.531

tFG = 70 red –3.421 0.063 –4.517 0.078 –6.253 0.108 0.249 0.286 0.379
tSG = 50 –3.704 0.079 –4.814 0.063 –6.569 0.036 0.483 0.408 0.153
multiple –3.608 0.154 –4.713 0.156 –6.462 0.165 0.778 0.704 0.576

tFG = 70 blue –4.389 0.034 –4.545 0.050 –4.693 0.105 0.137 0.242 0.400
tSG = 50 –4.774 0.064 –4.890 0.076 –4.973 0.127 0.307 0.435 0.688
multiple –4.678 0.176 –4.804 0.165 –4.904 0.172 0.666 0.762 0.947

tFG = 100 red –2.790 0.090 –3.834 0.112 –5.482 0.159 0.326 0.388 0.516
tSG = 80 –2.968 0.052 –4.030 0.050 –5.705 0.054 0.307 0.340 0.223
multiple –2.901 0.111 –3.956 0.124 –5.621 0.152 0.568 0.594 0.602

tFG = 100 blue –3.761 0.041 –3.942 0.040 –4.128 0.052 0.148 0.174 0.284
tSG = 80 –4.125 0.040 –4.360 0.038 –4.621 0.052 0.154 0.158 0.239
multiple –3.919 0.185 –4.123 0.211 –4.342 0.249 0.507 0.580 0.768

tFG = 120 red –2.476 0.119 –3.494 0.146 –5.089 0.204 0.516 0.596 0.760
tSG = 100 –2.623 0.115 –3.647 0.098 –5.250 0.071 0.585 0.455 0.286
multiple –2.567 0.136 –3.588 0.140 –5.188 0.158 0.919 0.843 0.760

tFG = 120 blue –3.413 0.075 –3.614 0.089 –3.826 0.153 0.280 0.356 0.592
tSG = 100 –3.710 0.077 –4.073 0.050 –4.513 0.092 0.287 0.305 0.387
multiple –3.556 0.167 –3.834 0.241 –4.155 0.366 0.568 0.742 1.153

tFG = 150 red –2.098 0.157 –3.080 0.188 –4.603 0.262 0.618 0.642 0.810
tSG = 130 –2.172 0.068 –3.173 0.082 –4.733 0.121 0.326 0.323 0.450
multiple –2.138 0.124 –3.130 0.149 –4.672 0.210 0.618 0.642 0.810

tFG = 150 blue –3.006 0.053 –3.264 0.067 –3.554 0.090 0.192 0.243 0.339
tSG = 130 –3.161 0.056 –3.667 0.061 –4.309 0.079 0.203 0.220 0.258
multiple –3.073 0.096 –3.450 0.213 –3.908 0.395 0.348 0.660 1.180

tFG = 320 red –0.911 0.317 –1.717 0.306 –2.881 0.285 1.058 1.023 0.95
tSG = 300 –0.868 0.292 –1.735 0.303 –3.015 0.323 0.988 1.072 1.079
multiple –0.884 0.303 –1.728 0.304 –2.963 0.316 1.077 1.538 1.247

tFG = 520 red 0.111 0.268 –0.685 0.271 –1.835 0.279 0.864 0.888 0.887
tSG = 500 –0.030 0.273 –0.861 0.286 –2.078 0.307 0.984 1.007 1.079
multiple 0.021 0.279 –0.797 0.293 –1.989 0.319 1.078 1.156 1.245

tFG = 720 red 0.550 0.249 –0.251 0.257 –1.415 0.260 0.807 0.846 0.889
tSG = 700 0.027 0.133 –0.821 0.151 –2.068 0.174 0.541 0.596 0.662
multiple 0.369 0.330 –0.447 0.353 –1.64 0.389 1.152 1.251 1.374

Notes. The age difference between the first- and second-generation stars is 20 Myr.

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