Table 4
Slopes and zero-points of the abundance gradients for various elements.
| Element | Range | Slope | Zero-point | rms | N | Slope (previous studies) | rms |
| kpc | dex/kpc | dex | dex/kpc | ||||
|
|
|||||||
| [Na/H] | [4−15] | –0.066 ± 0.015 | 0.843 ± 0.146 | 0.177 | 42 | –0.047 ± 0.003 | 0.131 |
| [7−15] | –0.049 ± 0.016 | 0.673 ± 0.161 | 0.154 | 39 | |||
| [Mg/H] | [4−15] | –0.050 ± 0.013 | 0.594 ± 0.133 | 0.185 | 54 | –0.048 ± 0.004 | 0.160 |
| [7−15] | –0.030 ± 0.015 | 0.381 ± 0.150 | 0.174 | 51 | |||
| [Al/H] | [4−15] | –0.046 ± 0.013 | 0.508 ± 0.122 | 0.170 | 55 | –0.049 ± 0.003 | 0.130 |
| [7−15] | –0.030 ± 0.014 | 0.343 ± 0.142 | 0.164 | 52 | |||
| [Si/H] | [4−15] | –0.068 ± 0.009 | 0.690 ± 0.089 | 0.139 | 62 | –0.048 ± 0.002 | 0.088 |
| [7−15] | –0.057 ± 0.011 | 0.575 ± 0.110 | 0.140 | 58 | |||
| [S/H] | [4−15] | –0.095 ± 0.015 | 1.031 ± 0.152 | 0.206 | 52 | –0.076 ± 0.005 | 0.159 |
| [7−15] | –0.079 ± 0.017 | 0.857 ± 0.173 | 0.202 | 50 | |||
| [Ca/H] | [4−15] | –0.044 ± 0.012 | 0.409 ± 0.119 | 0.173 | 61 | –0.041 ± 0.003 | 0.114 |
| [7−15] | –0.033 ± 0.014 | 0.302 ± 0.138 | 0.173 | 58 | |||
| [Y/H] | [4−15] | –0.062 ± 0.012 | 0.569 ± 0.114 | 0.166 | 61 | –0.061 ± 0.003 | 0.116 |
| [Zr/H] | [4−15] | –0.078 ± 0.016 | 0.814 ± 0.158 | 0.162 | 41 | –0.047 ± 0.005 | 0.127 |
| [La/H] | [4−15] | –0.045 ± 0.012 | 0.541 ± 0.111 | 0.168 | 60 | –0.031 ± 0.004 | 0.144 |
| [Ce/H] | [4−15] | –0.043 ± 0.012 | 0.597 ± 0.113 | 0.158 | 55 | –0.034 ± 0.003 | 0.133 |
| [Nd/H] | [4−15] | –0.046 ± 0.013 | 0.593 ± 0.131 | 0.165 | 55 | –0.037 ± 0.003 | 0.114 |
| [Eu/H] | [4−15] | –0.066 ± 0.013 | 0.778 ± 0.122 | 0.184 | 59 | –0.042 ± 0.005 | 0.171 |
| [7−15] | –0.056 ± 0.015 | 0.671 ± 0.153 | 0.184 | 55 | |||
Notes. We also indicate the root mean square (rms) of the residuals and the number of data points for the fit. For some elements, we also computed the gradient over a different distance range. The gradient values and rms obtained by Luck & Lambert (2011) are tabulated for comparison (Luck et al. (2011) for S and Zr).
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.