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Table A.1

Target RGB stars in 47 Tuc, their atmospheric parameters, and determined abundances of Na, Mg and K.

Star RA Dec V I T eff log g v rad [ Na / Fe ] [ Mg / Fe ] [ K / Fe ]
name (2000) (2000) mag mag K [cgs] km  s-1 1D NLTE 1D NLTE 1D NLTE

N104-S1667 6.40433 –72.20061 13.19 11.99 4450 1.73 –9 .5 0.56 ± 0.12 0.38 ± 0.07 0. 20 ± 0.16
N104-S2214 6.31979 –72.07552 13.23 12.01 4430 1.73 –27 .6 0.31 ± 0.12 0.48 ± 0.08 0. 09 ± 0.16
N104-S1213 5.79479 –71.93364 13.28 12.09 4490 1.79 –8 .9 0.58 ± 0.12 0.29 ± 0.07 0. 19 ± 0.16
N104-S1430 5.98271 –71.90491 13.34 12.16 4500 1.82 –16 .4 0.59 ± 0.12 0.37 ± 0.07 –0. 06 ± 0.16
N104-S1625 6.35437 –71.98103 13.36 12.15 4450 1.79 –21 .6 0.41 ± 0.12 ... 0. 30 ± 0.16
N104-S2499 6.64554 –72.11236 13.37 12.17 4460 1.80 –11 .2 0.46 ± 0.12 0.59 ± 0.07 ...
N104-S2220 6.36883 –72.01095 13.49 12.31 4490 1.87 –27 .2 0.53 ± 0.12 0.59 ± 0.07 –0. 07 ± 0.16
N104-S1800 6.55300 –72.00191 13.52 12.35 4510 1.90 –17 .3 0.65 ± 0.12 0.51 ± 0.08 –0. 03 ± 0.16
N104-S1481 6.09350 –72.25283 13.53 12.35 4500 1.89 –21 .8 0.23 ± 0.12 0.24 ± 0.07 0. 02 ± 0.16
N104-S1849 6.60921 –72.01517 13.72 12.55 4500 1.97 –26 .1 0.38 ± 0.12 0.56 ± 0.08 –0. 07 ± 0.16
N104-S1779 6.53142 –71.97400 13.73 12.58 4550 2.01 –22 .9 0.61 ± 0.12 ... ...
N104-S1490 6.13163 –72.26456 13.84 12.69 4560 2.05 –10 .8 0.38 ± 0.12 0.37 ± 0.07 0. 06 ± 0.16
N104-S2328 5.39333 –72.14819 13.85 12.74 4630 2.10 –11 .5 0.46 ± 0.12 0.52 ± 0.08 –0. 06 ± 0.16
N104-S1636 6.36917 –72.02222 13.87 12.76 4610 2.10 –16 .7 0.49 ± 0.13 ... ...
N104-S1751 6.51550 –72.20506 13.91 12.77 4550 2.08 –19 .2 0.31 ± 0.12 0.42 ± 0.07 0. 22 ± 0.16
N104-S1657 6.39483 –72.13347 13.98 12.89 4660 2.17 –18 .0 ... 0.58 ± 0.08 0. 27 ± 0.16
N104-S1750 6.51125 –72.05508 14.09 13.00 4650 2.21 –23 .3 0.53 ± 0.12 ... 0. 32 ± 0.17
N104-S1543 6.23467 –72.13755 14.12 13.06 4710 2.26 –16 .6 0.60 ± 0.13 ... –0. 06 ± 0.16
N104-S1732 6.49112 –72.08711 14.17 13.09 4670 2.25 –22 .9 0.47 ± 0.13 ... 0. 05 ± 0.16
N104-S1563 6.27129 –72.15166 14.21 13.13 4700 2.28 –13 .4 0.45 ± 0.12 0.42 ± 0.07 0. 00 ± 0.16
N104-S167 5.09500 –72.02045 12.99 11.75 4390 1.60 –22 .5 0.41 ± 0.12 0.36 ± 0.07 0. 15 ± 0.16
N104-S292 5.17163 –72.04539 13.18 11.99 4470 1.73 –15 .0 0.37 ± 0.12 0.54 ± 0.07 0. 18 ± 0.16
N104-S1084 5.60667 –71.88953 13.50 12.31 4470 1.86 –11 .2 0.25 ± 0.12 0.30 ± 0.07 –0. 16 ± 0.16
N104-S2474 6.47350 –71.86870 13.55 12.34 4440 1.86 –15 .8 0.16 ± 0.12 ... ...
N104-S1844 6.60458 –71.95181 13.61 12.44 4510 1.94 –23 .2 0.33 ± 0.12 0.31 ± 0.08 –0. 06 ± 0.16
N104-S2333 5.40721 –72.21652 13.77 12.65 4600 2.05 –25 .2 0.56 ± 0.12 0.39 ± 0.07 0. 21 ± 0.16
N104-S1070 5.58192 –72.23414 13.87 12.73 4550 2.06 –18 .1 0.24 ± 0.12 0.30 ± 0.07 0. 03 ± 0.16
N104-S2494 6.62525 –72.23708 13.91 12.75 4540 2.07 –10 .1 ... 0.32 ± 0.07 0. 00 ± 0.16
N104-S1692 6.43354 –71.99447 14.05 12.91 4570 2.14 –22 .8 0.29 ± 0.13 0.32 ± 0.08 –0. 18 ± 0.16
N104-S2439 6.24533 –71.83745 14.17 13.07 4650 2.24 –23 .3 0.39 ± 0.12 0.38 ± 0.07 –0. 06 ± 0.16
N104-S1524 6.19971 –72.20933 14.23 13.17 4720 2.30 –16 .7 0.38 ± 0.12 0.50 ± 0.08 0. 06 ± 0.16
N104-S2176 6.21292 –72.00975 14.25 13.15 4640 2.27 –27 .4 0.29 ± 0.12 0.31 ± 0.07 –0. 13 ± 0.16

mean 0.42 0.41 0.05
σ 0.13 0.11 0.14

Notes. Column 1: object name; Col. 2: right ascension; Col. 3: declination; Col. 4: V magnitude; Col. 5: I magnitude; Col. 6: effective temperature; Col. 7: surface gravity; Col. 8: radial velocity; Col. 9: 1D NLTE sodium abundance and its error; Col. 10: 1D NLTE magnesium abundance and its error; Col. 11: 1D NLTE potassium abundance and its error.

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