Fig. 1.
Synthetic spectra of varying abundances are shown plotted over the J-PLUS filters J0395, J0410, and J0430. The J0395 filter is optimally centered on the Ca II H & K lines, which can be used as indicators of the overall stellar metallicity. The temperature-sensitive Hδ line is apparent in the F410 filter. The J0430 filter captures the CH G-band, which serves as a carbon indicator.
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