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Table 1

Relevant information and derived abundances for our sample of RGB stars in NGC 1851.

Obj1 Star2 S/N3 [Al/Fe]3 err Lim3 [N/Fe]3 B2 V2 [Fe/H]2 [O/Fe]2 [Na/Fe]2 [Mg/Fe]2 [Si/Fe]2
541 13618 35 –0.01 0.46 1 –0.05 16.392 15.482 –1.120 –0.435 0.437 0.305 0.420
1461 14827 32 0.74 0.36 1 17.819 16.994 –1.164 0.330 0.324 0.353
974 16120 98 0.41 0.09 1 0.10 16.859 16.012 –1.103 0.236 0.109 0.354 0.349
1218 20189 34 0.44 0 0.70 17.339 16.521 –1.155 –0.055 0.129 0.390 0.403
1186 20426 38 0.36 0 0.30 17.281 16.429 –1.106 0.139 0.060 0.417 0.393
1044 20653 35 0.08 0.28 1 0.55 17.002 16.120 –1.184 0.127 0.287 0.389 0.365
733 20922 41 0.05 0 0.10 16.705 15.784 –1.142 0.004 –0.043 0.427 0.400
766 21453 60 0.05 0.15 1 0.25 16.746 15.835 –1.156 –0.157 0.216 0.368 0.380
1211 21830 45 0.38 0.22 1 0.50 17.344 16.515 –1.163 –0.033 0.470 0.363 0.388
1103 22360 60 –0.09 0 0.10 17.123 16.223 –1.145 0.191 –0.315 0.450 0.315
788 22588 80 –0.28 0.23 1 0.10 16.762 15.878 –1.200 0.078 –0.139 0.405 0.377
891 22813 120 –0.30 0.13 1 0.20 16.820 15.945 –1.101 0.131 –0.146 0.449 0.364
719 23647 57 0.22 0.16 1 0.00 16.693 15.806 –1.193 –0.359 0.381 0.329 0.431
810 23765 61 0.36 0.14 1 0.05 16.765 15.814 –1.145 –0.344 0.409 0.370 0.403
1016 25037 63 –0.28 0.29 1 0.30 16.975 16.106 –1.151 0.131 –0.044 0.384 0.387
1202 25799 38 0.68 0 17.344 16.493 –1.214 0.109 –0.078 0.363 0.393
1190 26532 41 0.68 0.24 1 17.293 16.472 –1.180 –0.061 0.650 0.314 0.422
1045 26552 57 –0.18 0 0.10 17.019 16.090 –1.114 –0.038 0.399 0.342 0.384
1291 26880 57 –0.18 0.33 1 0.30 17.537 16.699 –1.161 0.337 –0.151 0.415 0.336
1274 27491 43 –0.01 0.48 1 0.40 17.499 16.685 –1.177 –0.034 0.203 0.361 0.378
1070 28116 32 0.71 0 0.40 17.040 16.200 –1.189 0.010 0.382 0.345
418 29203 57 0.56 0.14 1 0.10 16.162 15.115 –1.157 –0.442 0.487 0.363 0.443
1232 29470 41 0.59 0.25 1 0.40 17.413 16.548 –1.144 0.361 0.371 0.428
1024 30286 28 0.57 0 0.20 16.985 16.115 –1.072 0.031 0.151 0.432 0.392
802 31284 75 0.05 0.12 1 0.00 16.767 15.893 –1.179 0.057 –0.034 0.389 0.397
1307 31399 48 –0.02 0.38 1 17.569 16.761 –1.158 0.362 –0.018 0.420
1410 31463 30 1.13 0 17.774 17.031 –1.163 –0.134 0.430 0.322
1046 31520 61 0.44 0.16 1 0.00 16.998 16.158 –1.230 0.017 0.539 0.396 0.388
553 32112 43 0.43 0.21 1 0.30 16.460 15.517 –1.077 –0.167 0.381 0.352 0.385
1012 32256 44 –0.10 0.38 1 16.947 16.109 –1.168 0.073 –0.051 0.396 0.329
875 35750 66 0.36 0.13 1 0.20 16.813 15.874 –1.185 –0.334 0.423 0.356 0.404
347 35999 49 1.06 0.18 1 0.00 15.962 14.971 –1.147 –0.235 0.541 0.333 0.390
1395 36292 27 0.37 0.33 1 17.724 16.917 –1.101 0.128 0.454 0.365 0.394
757 38484 29 0.61 0.30 1 16.727 15.837 –1.198 –0.125 0.542 0.402 0.411
1324 38818 40 0.23 0.24 1 0.00 17.618 16.804 –1.144 0.657 0.290 0.438
801 39364 54 0.33 0.16 1 0.20 16.765 15.877 –1.128 –0.098 0.295 0.354 0.375
539 40300 124 0.49 0.07 1 –0.10 16.414 15.533 –1.192 0.327 0.329 0.373
409 40615 72 0.59 0.12 1 –0.20 16.114 15.156 –1.231 –0.253 0.407 0.365 0.419
692 41113 68 0.56 0.14 1 0.20 16.642 15.769 –1.219 –0.537 0.463 0.322 0.419
1323 41855 35 0.48 0.30 1 17.610 16.847 –1.202 0.501 0.354 0.395
1339 43528 41 –0.22 0.45 1 0.40 17.624 16.854 –1.067 0.340 –0.323 0.375 0.341
1351 44224 38 0.36 0.27 1 17.660 16.839 –1.205 0.752 0.350 0.433
616 44414 56 0.23 0.18 1 0.10 16.549 15.653 –1.187 0.064 0.069 0.381 0.379
346 44939 147 –0.19 0.10 1 –0.20 15.952 14.956 –1.151 0.072 –0.025 0.369 0.363
1119 45006 63 –0.07 0.28 1 0.00 17.096 16.245 –1.115 0.103 0.032 0.415 0.328
1080 45090 59 0.15 0.16 1 17.047 16.228 –1.185 0.175 0.059 0.353 0.356
1050 45413 88 –0.47 0.21 1 0.30 16.981 16.155 –1.125 0.244 –0.157 0.380 0.351
1093 46228 73 –0.21 0.21 1 17.075 16.238 –1.097 0.198 –0.099 0.350 0.362
1203 46657 30 1.26 0 17.316 16.521 –1.246 –0.047 0.023 0.399
1074 46958 93 –0.20 0.20 1 0.25 17.048 16.204 –1.142 0.254 –0.145 0.371 0.344
507 47385 66 –0.17 0.27 1 0.00 16.341 15.437 –1.203 0.171 –0.191 0.401 0.333
746 47795 38 0.56 0.23 1 0.40 16.723 15.753 –1.127 –0.167 0.384 0.385 0.405
407 48085 119 –0.16 0.11 1 –0.20 16.115 15.144 –1.111 0.183 –0.090 0.384 0.396
1350 48277 26 1.03 0 17.659 16.863 –1.068 –0.181 0.399 0.356
1007 48388 58 0.12 0.16 1 0.00 16.937 16.136 –1.163 0.018 0.369 0.357
1144 49965 45 0.62 0.20 1 0.30 17.156 16.242 –1.095 –0.017 0.399 0.391 0.362
1280 50876 37 0.38 0.23 1 0.30 17.512 16.680 –1.097 0.205 0.321 0.376
588 50973 64 0.07 0.14 1 –0.20 16.530 15.572 –1.084 –0.111 0.296 0.430 0.386
738 51311 62 0.13 0.16 1 0.30 16.706 15.758 –1.256 0.236 0.251 0.413 0.408
1319 52579 33 0.67 0.28 1 17.587 16.801 –1.151 0.447 0.415 0.396

Notes. 

(1)

Object identification, from FLAMES mask in the ESO archive.

(2)

Star identification, magnitudes and abundance ratios taken from Carretta et al. (2011).

(3)

S/N and abundances derived in the present work. Lim is 0 for upper limits in the Al abundance.

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