23 citations · 26 across the 3 of their papers we have counts for
3 papers
astro-ph.SR2022★ 23 cited
Three-dimensional imaging of convective cells in the photosphere of Betelgeuse
A. López Ariste, S. Georgiev, Ph. Mathias +5
Understanding convection in red supergiants and the mechanisms that trigger the mass loss from these evolved stars are the general goals of most observations of Betelgeuse and its…
astro-ph.SR2022★ 2 cited
Determining rotational and macroturbulent velocities of cool magnetic giant stars
Stefan Georgiev, Agnès Lèbre, Eric Josselin +2
An original method of estimating the projected rotational velocity, , and the macroturbulent velocity, , of evolved M giant stars is presented. It is based on t…
astro-ph.SR2022★ 1 cited
A Long-Term Spectral Study of the Single Active Giant OP Andromedae
Stefan Georgiev, Renada Konstantinova-Antova, Ana Borisova +10
We present a spectral study of the single magnetically active K giant OP And in the period 1979 -- 2018, monitoring the variability of the activity indicator line H. Original da…