Measuring chromospheric activity from stellar spectra

This work presents, through a didactic approach, the main spectroscopic indicators currently used to measure chromospheric activity, as well as introducing the physical mechanisms that define chromospheric activity in solar-type stars. In the introduction, we present how the solar atmosphere is composed and also indicate how this subject can be approached in the context of teaching astronomy in high school. In the following sections, we describe the physics of the solar chromosphere and present the main spectroscopic indices used to measure chromospheric activity. In the last section, we detail the code used to measure chromospheric activity from stellar spectra.

Keywords
Sun; sunspots; stellar chromospheric activity