Open Access
Table 1
Average abundances of hydrostatic and explosive α-elements.
| GC | [O/Fe] n mean rms |
[Mg/Fe] n mean rms |
[Si/Fe] n mean rms |
[Ca/Fe] n mean rms |
[Ti/Fe] I n mean rms |
[Fe/H] mean rms |
|---|---|---|---|---|---|---|
| 0104 P only |
115 +0.152 0.179 31 +0.289 0.083 |
147 +0.530 0.076 31 +0.533 0.081 |
147 +0.433 0.061 31 +0.399 0.058 |
147 +0.315 0.024 31 +0.310 0.023 |
146 +0.394 0.036 31 +0.394 0.033 |
–0.768 0.054 |
| 0288 P only |
70 +0.132 0.257 23 +0.286 0.196 |
107 +0.469 0.045 22 +0.465 0.043 |
112+0.3 89 0.029 23 +0.379 0.035 |
111 +0.402 0.045 23 +0.394 0.035 |
106 +0.283 0.040 23 +0.270 0.030 |
–1.305 0.054 |
| 0362 P only |
71 +0.091 0.189 16 +0.219 0.097 |
87 +0.328 0.042 14 +0.347 0.034 |
89 +0.248 0.040 15 +0.231 0.027 |
91 +0.334 0.026 16 +0.340 0.030 |
86 +0.172 0.037 15 +0.161 0.022 |
–1.166 0.048 |
| 1851 P only |
96 +0.002 0.209 30 +0.170 0.112 |
123 +0.374 0.036 30 +0.393 0.034 |
124+0.3 83 0.029 29 +0.365 0.029 |
125 +0.324 0.035 30 +0.317 0.029 |
122 +0.155 0.053 30 +0.144 0.049 |
–1.185 0.068 |
| 1904 P only |
58 +0.078 0.205 19 +0.215 0.098 |
57 +0.272 0.040 19 +0.276 0.03 8 |
68 +0.304 0.036 19 +0.292 0.039 |
67 +0.276 0.037 19 +0.274 0.033 |
66 +0.131 0.042 19 +0.141 0.035 |
–1.579 0.033 |
| 2808 P only |
117 +0.001 0.371 42 +0.308 0.058 |
139 +0.272 0.156 46 +0.384 0.041 |
140 +0.296 0.054 46 +0.265 0.026 |
140 +0.328 0.023 46 +0.321 0.024 |
140 +0.213 0.033 46 +0.215 0.033 |
–1.129 0.030 |
| 3201 P only |
110 +0.125 0.286 35 +0.273 0.166 |
131 +0.341 0.049 32 +0.338 0.041 |
146 +0.299 0.038 35 +0.293 0.039 |
150 +0.306 0.039 35 +0.293 0.035 |
118 +0.082 0.037 34 +0.079 0.034 |
–1.512 0.065 |
| 4590 P only |
56 +0.403 0.178 19 +0.473 0.177 |
62 +0.364 0.066 18 +0.350 0.065 |
54 +0.423 0.057 13 +0.409 0.049 |
120 +0.280 0.042 19 +0.272 0.042 |
18 +0.162 0.048 8 +0.164 0.048 |
–2.265 0.047 |
| 4833 P only |
61 +0.243 0.270 16 +0.456 0.102 |
52 +0.338 0.173 14 +0.508 0.078 |
71 +0.459 0.051 16 +0.426 0.027 |
78 +0.351 0.015 16 +0.349 0.018 |
62 +0.167 0.023 16 +0.166 0.026 |
–2.015 0.014 |
| 5634 P only |
6 +0.292 0.134 3 +0.388 0.107 |
7 +0.519 0.032 4 +0.512 0.047 |
7 +0.295 0.031 4 +0.296 0.045 |
7 +0.299 0.024 4 +0.285 0.024 |
7 +0.146 0.015 4 +0.137 0.015 |
–1.867 0.050 |
| 5904 P only |
114 +0.139 0.282 31 +0.387 0.122 |
135 +0.422 0.052 31 +0.418 0.053 |
137 +0.320 0.034 31 +0.310 0.037 |
138 +0.371 0.028 31 +0.369 0.032 |
133 +0.181 0.027 31 +0.182 0.029 |
–1.340 0.052 |
| 6093 P only |
63 +0.223 0.217 18 +0.405 0.111 |
70 +0.458 0.061 17 +0.461 0.048 |
79 +0.354 0.031 17 +0.351 0.037 |
82 +0.356 0.016 18 +0.356 0.016 |
68 +0.189 0.029 18 +0.187 0.028 |
–1.792 0.023 |
| 6121 P only |
88 +0.218 0.118 26 +0.313 0.079 |
104 +0.545 0.045 26 +0.547 0.050 |
104 +0.538 0.039 26 +0.519 0.039 |
104 +0.415 0.035 26 +0.412 0.031 |
104 +0.281 0.033 26 +0.277 0.034 |
–1.168 0.046 |
| 6171 P only |
30 +0.172 0.187 10 +0.309 0.075 |
33 +0.522 0.044 10 +0.533 0.028 |
33 +0.524 0.049 10 +0.528 0.056 |
33 +0.415 0.032 10 +0.425 0.031 |
33 +0.174 0.03 8 10 +0.170 0.032 |
–1.033 0.064 |
| 6218 P only |
75 +0.281 0.275 18 +0.525 0.137 |
81 +0.537 0.037 18 +0.540 0.032 |
81 +0.356 0.044 18 +0.316 0.034 |
81 +0.420 0.038 18 +0.410 0.047 |
80 +0.251 0.024 18 +0.254 0.025 |
–1.330 0.042 |
| 6254 P only |
109 +0.271 0.212 33 +0.401 0.131 |
129 +0.481 0.065 32 +0.519 0.067 |
144 +0.314 0.057 31 +0.294 0.051 |
152 +0.342 0.037 33 +0.328 0.037 |
130 +0.176 0.043 33 +0.166 0.045 |
–1.575 0.059 |
| 6388 P only |
183 −0.071 0.229 53 +0.103 0.145 |
184 +0.220 0.052 53 +0.233 0.053 |
184 +0.317 0.063 53 +0.284 0.048 |
185 +0.067 0.046 54 +0.053 0.050 |
185 +0.275 0.096 54 +0.258 0.105 |
–0.480 0.045 |
| 6397 P only |
19 +0.274 0.085 4 +0.332 0.069 |
97 +0.454 0.041 4 +0.467 0.040 |
49 +0.337 0.037 4 +0.326 0.037 |
147 +0.290 0.035 4 +0.267 0.037 |
38 +0.177 0.037 4 +0.164 0.025 |
–1.988 0.044 |
| 6441 P only |
29 +0.040 0.180 11 +0.100 0.100 |
29 +0.370 0.130 11 +0.410 0.130 |
30 +0.400 0.180 11 +0.360 0.210 |
29 +0.170 0.180 11 +0.110 0.170 |
27 +0.320 0.180 10 +0.250 0.150 |
–0.348 0.090 |
| 6535 P only |
27 +0.602 0.190 8 +0.699 0.178 |
24 +0.479 0.051 7 +0.495 0.035 |
6 +0.418 0.035 7 +0.428 0.048 |
7 +0.312 0.018 8 +0.339 0.043 |
7 +0.184 0.036 6+0.186 0.045 |
–1.952 0.036 |
| 6715 P only |
76 +0.070 0.344 21 +0.359 0.078 |
75 +0.344 0.170 21 +0.421 0.102 |
77 +0.414 0.102 21 +0.385 0.081 |
77 +0.363 0.107 21 +0.307 0.083 |
77 +0.166 0.137 21 +0.095 0.099 |
–1.505 0.164 |
| 6752 P only |
107 +0.242 0.245 26 +0.452 0.163 |
125 +0.387 0.107 25 +0.457 0.058 |
137 +0.476 0.062 26 +0.434 0.064 |
130 +0.397 0.033 26 +0.395 0.027 |
134 +0.181 0.039 24 +0.174 0.035 |
–1.555 0.051 |
| 6809 P only |
113 +0.251 0.191 17 +0.380 0.090 |
129 +0.483 0.061 17 +0.523 0.041 |
146 +0.380 0.044 17 +0.377 0.041 |
152 +0.363 0.042 17 +0.360 0.052 |
133 +0.147 0.056 17 +0.140 0.050 |
–1.934 0.063 |
| 6838 P only |
43 +0.364 0.112 12 +0.403 0.109 |
51 +0.496 0.043 12 +0.499 0.042 |
51 +0.391 0.051 12 +0.391 0.056 |
51 +0.312 0.050 12 +0.274 0.050 |
51 +0.366 0.070 12 +0.342 0.067 |
–0.832 0.061 |
| 7078 P only |
45 +0.308 0.187 13 +0.438 0.125 |
55 +0.420 0.175 13 +0.542 0.107 |
59 +0.472 0.093 10 +0.395 0.081 |
82 +0.273 0.054 13 +0.254 0.053 |
36 +0.219 0.040 12 +0.213 0.029 |
–2.320 0.057 |
| 7099 P only |
35 +0.376 0.264 12 +0.507 0.115 |
33 +0.505 0.044 10 +0.511 0.035 |
22 +0.367 0.058 5 +0.298 0.062 |
68 +0.323 0.051 12 +0.318 0.045 |
24 +0.240 0.032 8 +0.234 0.031 |
–2.344 0.049 |
| Ter8 P only |
6 +0.394 0.045 6 +0.394 0.045 |
6 +0.470 0.092 6 +0.470 0.092 |
6 +0.248 0.095 6 +0.248 0.095 |
6 +0.190 0.038 6 +0.190 0.038 |
6 +0.050 0.057 6 +0.050 0.057 |
–2.271 0.079 |
Notes. For each GC, the second row lists the average abundances computed using only the P stars with primordial composition. n is the number of stars used in the averages.
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