Jorit Leenaarts, Mr. - PhD
Institute for Solar Physics, Stockholm University, Stockholm, Sweden
       
       
Session 3 - Invited Speaker

Modeling the Mg II h & k lines observed by IRIS and the Ca II H & K lines observed from the ground

J. Leenaarts, Institute for Solar Physics, Stockholm University, Stockholm, Sweden
       

The Mg II h & k and Ca II H & K lines have similar formation properties. Their main difference is the 18 times larger abundance of Mg compared to Ca. This leads to a significant height difference of the line-core optical-depth-unity-heights. I will review the formation of the Ca and Mg lines, and discuss their diagnostic potential, in particular if observed simultaneously.