The 1.6 $\mu \mathrm{m}$ ${\mathrm{H}}^{-}$ bump as a diagnostic of TP-AGB contributions and recent quenching. I. Insights from stellar population models

Pengjun Lu, Song Huang, Shiying Lu +3

The 1.6 $\mu \mathrm{m}$ ${\mathrm{H}}^{-}$ bump arises from a minimum in the opacity of the negative hydrogen ion in cool stellar atmospheres. Although it is recognized as a common feature…