Table 6: Absolute abundances of NGC 3293, NGC 4755, NGC 2004 and NGC 330 stars. Presented are the mean of the absolute abundances for each species studied, obtained using the final corrected atmospheric parameters from Tables 3 and 4. Those objects with <0 in the microturbulence column are those for which the microturbulence could not be lowered any further to obtain a Si abundance close to or at the mean silicon abundance of the cluster. Carbon abundances presented here are based solely on the C  II 4267 Å line and should only be used as a guide to the relative carbon abundance between the stars (see Sect. 5.3). Uncertainties on the abundances account for both random and systematic errors as discussed in Sect. 5.1. Abundances are presented as [X] = 12 + $\log$ ([X/H]) in units of dex, $T_{\rm eff}$ in K, $\log {g}$ in cm s-2 and $\xi $ in km s-1.
Star Sp. Typ $T_{\rm eff}$ $\log {g}$ $\xi $ $_{\rm Ave}$ C II N II O II Mg II Si II Si III Si IV Fe III
NGC 3293-003 B1 III 20 500 2.75 13 7.84 7.52 $\pm$ 0.07 8.75 $\pm$ 0.28 7.29 $\pm$ 0.27   7.48 $\pm$ 0.33 7.49 $\pm$ 0.64 7.27 $\pm$ 0.31
NGC 3293-004 B1 III 22 700 3.13 13 7.89 7.55 $\pm$ 0.09 8.74 $\pm$ 0.23 7.44 $\pm$ 0.29   7.45 $\pm$ 0.22 7.45 $\pm$ 0.60  
NGC 3293-007 B1 III 22 600 3.10 11 7.86 7.50 $\pm$ 0.08 8.71 $\pm$ 0.22 7.26 $\pm$ 0.23 7.32 $\pm$ 0.39 7.44 $\pm$ 0.24 7.44 $\pm$ 0.59 7.24 $\pm$ 0.24
NGC 3293-010 B1 III 21 450 3.20 11 7.66 7.45 $\pm$ 0.11 8.82 $\pm$ 0.31 7.17 $\pm$ 0.24 6.89 $\pm$ 0.26 7.49 $\pm$ 0.33 7.53 $\pm$ 0.58 7.30 $\pm$ 0.24
NGC 3293-012 B1 III 21 500 3.30 11 7.67 7.45 $\pm$ 0.16 8.83 $\pm$ 0.33 7.29 $\pm$ 0.21   7.50 $\pm$ 0.33 7.51 $\pm$ 0.56  
NGC 3293-018 B1 V 23 450 3.75 5 7.66 7.56 $\pm$ 0.11 8.71 $\pm$ 0.28 7.15 $\pm$ 0.18 6.88 $\pm$ 0.23 7.49 $\pm$ 0.36 7.49 $\pm$ 0.57 7.70 $\pm$ 0.26
NGC 3293-026 B2 III 22 100 3.65 2 7.79 7.66 $\pm$ 0.17 8.75 $\pm$ 0.31 7.22 $\pm$ 0.29 6.95 $\pm$ 0.25 7.47 $\pm$ 0.35 7.46 $\pm$ 0.64 7.66 $\pm$ 0.18
NGC 3293-043 B3 V 19 500 4.05 <0 7.91 7.55 $\pm$ 0.26 8.50 $\pm$ 0.34 7.14 $\pm$ 0.26 7.31 $\pm$ 0.37 7.31 $\pm$ 0.34   7.51 $\pm$ 0.25
NGC 4755-002 B3 Ia 15 950 2.20 18 7.87 8.18 $\pm$ 0.31 8.59 $\pm$ 0.43 7.30 $\pm$ 0.32 7.40 $\pm$ 0.30 7.40 $\pm$ 0.46   7.54 $\pm$ 0.22
NGC 4755-003 B2 III 17 700 2.50 15 7.78 8.12 $\pm$ 0.27 8.52 $\pm$ 0.36 7.33 $\pm$ 0.26 7.40 $\pm$ 0.26 7.40 $\pm$ 0.43   7.47 $\pm$ 0.18
NGC 4755-004 B1.5 Ib 19 550 2.60 17 7.76 8.07 $\pm$ 0.14 8.64 $\pm$ 0.28 7.29 $\pm$ 0.29 7.39 $\pm$ 0.35 7.38 $\pm$ 0.38 7.32 $\pm$ 0.67 7.38 $\pm$ 0.25
NGC 4755-006 B1 III 19 900 2.95 17 7.60 7.63 $\pm$ 0.19 8.90 $\pm$ 0.32 7.21 $\pm$ 0.21   7.43 $\pm$ 0.37 7.47 $\pm$ 0.52  
NGC 4755-015 B1 V 22 400 3.70 5 7.64 7.81 $\pm$ 0.21 8.80 $\pm$ 0.33 7.09 $\pm$ 0.23   7.47 $\pm$ 0.38 7.46 $\pm$ 0.64 7.73 $\pm$ 0.38
NGC 4755-017 B1.5 V 20 400 3.90 3 7.93 7.74 $\pm$ 0.37 8.71 $\pm$ 0.45 7.32 $\pm$ 0.34 7.44 $\pm$ 0.36 7.44 $\pm$ 0.44    
NGC 4755-020 B2 V 21 700 3.95 1 8.01 7.68 $\pm$ 0.22 8.51 $\pm$ 0.31 7.44 $\pm$ 0.29 7.38 $\pm$ 0.29 7.39 $\pm$ 0.34   7.84 $\pm$ 0.25
NGC 4755-033 B3 V 17 300 3.85 6 8.17 7.44 $\pm$ 0.36 8.72 $\pm$ 0.43 7.15 $\pm$ 0.35 7.38 $\pm$ 0.49 7.39 $\pm$ 0.39    
NGC 4755-040 B2.5 V 18 900 4.10 2 8.31 7.69 $\pm$ 0.39 8.98 $\pm$ 0.40 7.19 $\pm$ 0.40 7.43 $\pm$ 0.44 7.44 $\pm$ 0.34    
NGC 4755-048 B3 V 17 800 3.95 4 8.30 7.45 $\pm$ 0.34 9.00 $\pm$ 0.36 7.08 $\pm$ 0.30 7.36 $\pm$ 0.40 7.39 $\pm$ 0.34    
NGC 2004-003 B5 Ia 14 450 2.10 15 7.66 7.85 $\pm$ 0.40 8.45 $\pm$ 0.55 7.02 $\pm$ 0.26 7.22 $\pm$ 0.25 7.22 $\pm$ 0.50   7.29 $\pm$ 0.23
NGC 2004-005 B8 Ia 12 390 1.90 12 7.77 7.86 $\pm$ 0.37 8.84 $\pm$ 0.57 6.98 $\pm$ 0.46 7.22 $\pm$ 0.36 7.22 $\pm$ 0.44   7.20 $\pm$ 0.23
NGC 2004-007 B8 Ia 12 250 2.00 10 7.73 7.78 $\pm$ 0.28 8.84 $\pm$ 0.53 6.95 $\pm$ 0.43 7.21 $\pm$ 0.39 7.21 $\pm$ 0.44   7.11 $\pm$ 0.26
NGC 2004-010 B2.5 Iab 17 160 2.40 14 7.53 8.16 $\pm$ 0.29 8.29 $\pm$ 0.37 7.11 $\pm$ 0.26 7.21 $\pm$ 0.25 7.20 $\pm$ 0.43   7.26 $\pm$ 0.12
NGC 2004-011 B1.5 Ia 21 250 2.75 13 7.45 7.73 $\pm$ 0.07 8.41 $\pm$ 0.23 7.15 $\pm$ 0.26   7.19 $\pm$ 0.34 7.22 $\pm$ 0.66 7.14 $\pm$ 0.23
NGC 2004-012 B1.5 Iab 21 270 2.87 12 7.44 7.75 $\pm$ 0.09 8.43 $\pm$ 0.24 7.08 $\pm$ 0.23   7.19 $\pm$ 0.35 7.21 $\pm$ 0.64 7.12 $\pm$ 0.19
NGC 2004-014 B3 Ib 17 800 2.85 10 7.58 7.52 $\pm$ 0.26 8.24 $\pm$ 0.37 7.06 $\pm$ 0.22 7.22 $\pm$ 0.22 7.20 $\pm$ 0.40   7.17 $\pm$ 0.18
NGC 2004-021 B1.5 Ib 21 450 3.00 14 7.55 7.20 $\pm$ 0.10 8.47 $\pm$ 0.26 7.07 $\pm$ 0.22   7.18 $\pm$ 0.33 7.23 $\pm$ 0.57 7.19 $\pm$ 0.17
NGC 2004-022 B1.5 Ib 21 780 3.15 11 7.32 7.68 $\pm$ 0.11 8.55 $\pm$ 0.27 6.94 $\pm$ 0.19   7.23 $\pm$ 0.34 7.22 $\pm$ 0.58 7.00 $\pm$ 0.22
NGC 2004-026 B2 II 22 900 3.65 0 7.53 7.01 $\pm$ 0.12 8.18 $\pm$ 0.27 7.08 $\pm$ 0.17 7.24 $\pm$ 0.22 7.25 $\pm$ 0.36   7.35 $\pm$ 0.17
NGC 2004-029 B1.5 e 23 100 3.50 1 7.43 6.81 $\pm$ 0.05 8.29 $\pm$ 0.26 7.03 $\pm$ 0.19   7.21 $\pm$ 0.35 7.20 $\pm$ 0.56 7.35 $\pm$ 0.17
NGC 2004-036 B1.5 III 22 870 3.35 7 7.51 7.38 $\pm$ 0.07 8.48 $\pm$ 0.26 6.93 $\pm$ 0.18   7.21 $\pm$ 0.32 7.18 $\pm$ 0.56 7.29 $\pm$ 0.21
NGC 2004-042 B2.5 III 20 980 3.45 2 7.64 6.90 $\pm$ 0.19 8.16 $\pm$ 0.32 7.14 $\pm$ 0.22 7.18 $\pm$ 0.24 7.19 $\pm$ 0.36   7.20 $\pm$ 0.21
NGC 2004-046 B1.5 III 26 090 3.85 2 7.52 7.60 $\pm$ 0.11 8.44 $\pm$ 0.13 7.02 $\pm$ 0.19   7.22 $\pm$ 0.26 7.22 $\pm$ 0.50  
NGC 2004-053 B0.2 Ve 31 500 4.15 6 7.83 7.64 $\pm$ 0.15 8.39 $\pm$ 0.17 7.24 $\pm$ 0.22   7.18 $\pm$ 0.26 7.18 $\pm$ 0.53  
NGC 2004-061 B2 III 20 990 3.35 1 7.75 6.99 $\pm$ 0.24 8.30 $\pm$ 0.45 7.13 $\pm$ 0.28 7.16 $\pm$ 0.29 7.17 $\pm$ 0.47    
NGC 2004-064 B0.7-B1 III 25 900 3.70 6 7.49 7.53 $\pm$ 0.09 8.37 $\pm$ 0.12 7.08 $\pm$ 0.25   7.18 $\pm$ 0.25 7.18 $\pm$ 0.53  
NGC 2004-070 B0.7-B1 III 27 400 3.90 4 7.58 7.43 $\pm$ 0.11 8.50 $\pm$ 0.20 7.15 $\pm$ 0.22   7.19 $\pm$ 0.36 7.20 $\pm$ 0.56  
NGC 2004-084 B1.5 III 27 395 4.00 3 7.64 7.28 $\pm$ 0.15 8.42 $\pm$ 0.13 7.17 $\pm$ 0.20   7.25 $\pm$ 0.24 7.25 $\pm$ 0.47  
NGC 2004-090 O9.5 III 32 500 4.10 <0 7.63 7.65 $\pm$ 0.21 8.44 $\pm$ 0.24 6.97 $\pm$ 0.20   7.15 $\pm$ 0.27 7.16 $\pm$ 0.41  
NGC 2004-091 B1.5 III 26 520 4.05 0 7.80 7.29 $\pm$ 0.09 8.38 $\pm$ 0.14 7.29 $\pm$ 0.25   7.26 $\pm$ 0.27 7.26 $\pm$ 0.52  
NGC 2004-108 B2.5 III 22 600 4.00 <0 7.29 6.89 $\pm$ 0.14 8.23 $\pm$ 0.30 6.99 $\pm$ 0.20 6.98 $\pm$ 0.23 6.98 $\pm$ 0.31    
NGC 2004-119 B2 III 23 210 3.75 <0 7.48 6.95 $\pm$ 0.09 8.35 $\pm$ 0.27 7.17 $\pm$ 0.25 7.14 $\pm$ 0.24 7.14 $\pm$ 0.34    
NGC 330-002 B3 Ib 14 590 2.15 16 7.09 7.59 $\pm$ 0.33 7.98 $\pm$ 0.49 6.60 $\pm$ 0.23 6.81 $\pm$ 0.23 6.82 $\pm$ 0.46   6.70 $\pm$ 0.24
NGC 330-003 B2 Ib 17 210 2.25 20 7.25 7.69 $\pm$ 0.19 8.07 $\pm$ 0.34 6.79 $\pm$ 0.27 6.82 $\pm$ 0.25 6.81 $\pm$ 0.39   6.87 $\pm$ 0.22
NGC 330-004 B2.5 Ib 17 000 2.30 16 6.84 7.83 $\pm$ 0.14 7.86 $\pm$ 0.32 6.73 $\pm$ 0.21 6.76 $\pm$ 0.21 6.82 $\pm$ 0.39   6.83 $\pm$ 0.14
NGC 330-005 B5 Ib 13 700 2.25 8 6.77 7.49 $\pm$ 0.37 7.82 $\pm$ 0.45 6.58 $\pm$ 0.19 6.76 $\pm$ 0.23 6.81 $\pm$ 0.43    
NGC 330-009 B5 Ib 13 940 2.45 6 7.05 7.20 $\pm$ 0.41 8.30 $\pm$ 0.53 6.66 $\pm$ 0.31 6.80 $\pm$ 0.33 6.81 $\pm$ 0.49    
NGC 330-010 B5 Ib 14 820 2.60 4 7.17 7.14 $\pm$ 0.35 7.71 $\pm$ 0.43 6.63 $\pm$ 0.21 6.81 $\pm$ 0.30 6.84 $\pm$ 0.43    
NGC 330-014 B1.5 Ib 20 130 2.75 18 6.94 7.53 $\pm$ 0.13 8.11 $\pm$ 0.24 6.72 $\pm$ 0.21   6.83 $\pm$ 0.29 6.83 $\pm$ 0.52  
NGC 330-016 B5: II 14 220 2.60 5 7.36 7.18 $\pm$ 0.37 8.07 $\pm$ 0.51 6.69 $\pm$ 0.21 6.80 $\pm$ 0.31 6.81 $\pm$ 0.47    
NGC 330-017 B2 II 22 000 3.35 <0 7.07 7.12 $\pm$ 0.12 7.64 $\pm$ 0.25 6.47 $\pm$ 0.17   6.74 $\pm$ 0.33   6.90 $\pm$ 0.21
NGC 330-018 B3 II 18 000 2.95 5 7.17 7.24 $\pm$ 0.26 8.05 $\pm$ 0.37 6.61 $\pm$ 0.18 6.74 $\pm$ 0.18 6.80 $\pm$ 0.36   7.14 $\pm$ 0.21
NGC 330-020 B3 II 16 720 2.85 5 7.05 7.01 $\pm$ 0.44 7.80 $\pm$ 0.59 6.64 $\pm$ 0.28 6.82 $\pm$ 0.31 6.83 $\pm$ 0.57    
NGC 330-022 B3 II 18 860 3.00 1 7.14 7.29 $\pm$ 0.25 7.76 $\pm$ 0.39 6.85 $\pm$ 0.17 6.82 $\pm$ 0.20 6.83 $\pm$ 0.39    
NGC 330-026 B2.5 II 22 500 3.40 <0 7.30 7.23 $\pm$ 0.19 7.74 $\pm$ 0.30 7.02 $\pm$ 0.23   6.64 $\pm$ 0.39    
NGC 330-027 B1 V 22 040 3.20 7 7.13 7.40 $\pm$ 0.21 8.27 $\pm$ 0.43 6.44 $\pm$ 0.21   6.81 $\pm$ 0.36 6.82 $\pm$ 0.78  
NGC 330-032 B0.5 V 29 700 4.15 <0 7.16 7.37 $\pm$ 0.10 7.90 $\pm$ 0.07 6.80 $\pm$ 0.20   6.77 $\pm$ 0.19 6.77 $\pm$ 0.45  
NGC 330-042 B2 II 25 450 3.75 1 7.04 7.20 $\pm$ 0.05 7.73 $\pm$ 0.15 6.88 $\pm$ 0.18   6.82 $\pm$ 0.34 6.83 $\pm$ 0.52  
NGC 330-047 B1 V 26 700 4.05 0 7.20 6.76 $\pm$ 0.11 8.07 $\pm$ 0.13 6.57 $\pm$ 0.15   6.83 $\pm$ 0.23 6.84 $\pm$ 0.46  
NGC 330-074 B0 V 32 020 4.20 4 7.29 7.45 $\pm$ 0.19 7.87 $\pm$ 0.17 6.81 $\pm$ 0.18   6.83 $\pm$ 0.25 6.83 $\pm$ 0.47  
NGC 330-114 B2 III 23 800 3.90 4 7.23 7.32 $\pm$ 0.18 8.00 $\pm$ 0.27 6.97 $\pm$ 0.22   6.83 $\pm$ 0.32    
NGC 330-124 B0.2 V 30 980 4.25 2 7.55 7.36 $\pm$ 0.25 7.75 $\pm$ 0.17 6.75 $\pm$ 0.18   6.84 $\pm$ 0.23 6.84 $\pm$ 0.47  

Source LaTeX | All tables | In the text