7 citations · 7 across the 5 of their papers we have counts for
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astro-ph.SR2021★ 7 cited
Spectroscopic evidence for a large spot on the dimming Betelgeuse
Sofya Alexeeva, Gang Zhao, Dong-Yang Gao +4
During October 2019 and March 2020, the luminous red supergiant Betelgeuse demonstrated an unusually deep minimum of its brightness. It became fainter by more than one magnitude an…
astro-ph.SR2019
The NLTE Analyses of Carbon Emission Lines in the Atmospheres of O and B type Stars
Sofya Alexeeva, Kozo Sadakane, Masayoshi Nishimura +2
We present a model atom for C I - C II - C III - C IV using the most up-to-date atomic data and evaluated the non-local thermodynamic equilibrium (NLTE) line formation in classical…