Fine Structure of the Age-Chromospheric Activity Relation in Solar-Type Stars: II. H$\hat{I}\pm$ Line

Paulo V. Souza dos Santos, Gustavo F. Porto de Mello, Erica Costa-Bhering +4

Excess chromospheric emissions within deep photospheric lines are effective proxies of stellar magnetism for FGK stars. This emission decays with stellar age and is a potential det…