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Table 7
Radial abundance gradients in thick- and thin-disc stars (ΔX/ ΔRGC), errors on the slopes (ϵ), and number of stars in the corresponding subsamples (n).
| Line |
|
ϵ | n |
|
ϵ | n |
|
|
|
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|
|
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| main | clean | |||||
|
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| Thin disc | ||||||
| [ α/M] | 0.011 | 0.002 | 341 | 0.014 | 0.004 | 138 |
| [ Mg i/M] | 0.009 | 0.003 | 341 | 0.008 | 0.005 | 138 |
| [ Si i/M] | 0.021 | 0.004 | 341 | 0.015 | 0.009 | 138 |
| [ Ca ii/M] | 0.017 | 0.003 | 341 | 0.009 | 0.005 | 138 |
| [ M/H] | –0.045 | 0.012 | 341 | –0.028 | 0.012 | 138 |
| [ Fe i/H] | –0.044 | 0.009 | 341 | –0.028 | 0.018 | 138 |
|
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| Thick disc | ||||||
| [ α/M] | -0.005 | 0.001 | 273 | -0.005 | 0.006 | 57 |
| [ Mg i/M] | –0.006 | 0.003 | 273 | –0.014 | 0.005 | 57 |
| [ Al i/M] | –0.004 | 0.002 | 273 | –0.016 | 0.015 | 57 |
| [ Si i/M] | –0.005 | 0.004 | 273 | –0.014 | 0.006 | 57 |
| [ Ca ii/M] | –0.011 | 0.004 | 273 | –0.018 | 0.008 | 57 |
| [ M/H] | 0.005 | 0.005 | 273 | –0.011 | 0.019 | 57 |
| [ Fe i/H] | 0.008 | 0.007 | 273 | –0.021 | 0.029 | 57 |
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