Table 3.
Comparison between the Galactic metallicity gradient derived in this work and the literature values.
| a | b | n.DCEPs | Source |
|---|---|---|---|
| (dex kpc−1) | (dex) | ||
| −0.062 ± 0.002 | 0.605 ± 0.021 | 313 | Luck & Lambert (2011) |
| −0.051 ± 0.003 | 0.49 ± 0.03 | 128 | Genovali et al. (2014)( * ) |
| −0.060 ± 0.002 | 0.57 ± 0.02 | 450 | Genovali et al. (2014)( * *) |
| −0.051 ± 0.002 | 411 | Luck (2018) | |
| −0.0523 ± 0.0024 | 0.505 ± 0.022 | 489 | This work( † ) |
| −0.0527 ± 0.0022 | 0.511 ± 0.022 | 489 | This work( † †) |
Notes. The functional form is [Fe/H] = a × RGC + b. The values of the slope a and intercept b are listed in Cols. 1 and 2, respectively. Column 3 reports the number of sources used for the fit, while Col. 4 provides the literature source. ( * )Values obtained using UVES and FEROS spectroscopy only (see text.) ( * *)Values obtained with the whole sample. ( † )Values obtained with the PhotPar method. ( † †)Values obtained with the ABL method
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