Open Access
Table 1
Notation adopted in the present paper.
| col = magF275W − magF814W |
| col3 = (magF275W − magF336W) − (magF336W − magF438W) |
| Δcol = Wcol((col − xr)/(xr − xb)) |
| Δcol3 = Wcol3((col3 − yr)/(yr − yb)) |
| Wcol and Wcol = widths of the RGB in col and col3 |
| PCM = pseudo-colour map = Δcol in abscissa and Δcol3 in ordinate |
| RG1 = region in the PCM populated by FG stars only |
| RG2 = region in the PCM populated by SG (or non-FG) stars |
| lenRG1 = extension of the RG1 region in Δcol |
| iqrSG = extension of the RG2 region in Δcol |
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