Glitch analysis and asteroseismic modelling of subgiant $\mu$ Herculis: confirming and interpreting the ${\Gamma }_1$ peak as the helium glitch

Advik Gupta, Kuldeep Verma, Hans Kjeldsen +7

The measurements of pressure-mode and mixed-mode oscillation frequencies in subgiant stars offer a unique opportunity to probe their internal structures -- from the surface to the…