Table 4
Sensitivity and error analysis.
| Parameter | Teff | log g | [A/H] | vt | EW | Total |
|
|
||||||
| Variation | +100 K | +0.5 dex | +0.1 dex | +0.5 km s-1 | +10 mÅ | |
| Error BHB | 200 K | 0.1 dex | 0.05 dex | 0.5 km s-1 | 13 mÅ | |
| Error RHB | 50 K | 0.05 dex | 0.05 dex | 0.5 km s-1 | 8 mÅ | |
| Error RGB | 50 K | 0.05 dex | 0.05 dex | 0.5 km s-1 | 8 mÅ | |
|
|
||||||
| Blue HB | ||||||
|
|
||||||
| [N/Fe] | 0.018 | 0.049 | –0.001 | –0.057 | 0.092 | 0.138 |
| [O/Fe] | 0.021 | –0.002 | –0.012 | –0.154 | 0.099 | 0.205 |
| [Na/Fe] | 0.087 | –0.169 | 0.000 | –0.057 | 0.162 | 0.281 |
| [Mg/Fe] | 0.000 | 0.052 | –0.004 | –0.056 | 0.144 | 0.196 |
|
|
||||||
| Red HB | ||||||
|
|
||||||
| [Fe/H] | 0.065 | –0.020 | –0.001 | –0.098 | 0.050 | 0.078 |
| [O/Fe] | –0.095 | –0.181 | 0.000 | –0.081 | 0.080 | 0.095 |
| [Na/Fe] | 0.095 | –0.125 | 0.003 | –0.126 | 0.049 | 0.098 |
| [Mg/Fe] | 0.025 | –0.015 | 0.000 | –0.022 | 0.160 | 0.129 |
| [Si/Fe] | 0.030 | 0.005 | 0.001 | –0.027 | 0.094 | 0.078 |
| [Ca/Fe] | 0.075 | –0.100 | 0.000 | –0.200 | 0.158 | 0.155 |
| [Ba/Fe] | 0.056 | 0.181 | 0.006 | –0.169 | 0.181 | 0.180 |
Notes. Variation is the change in each parameter used in the sensitivity analysis (Cols. 2–6), while error is the change used to estimate the total error (Col. 7).
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