Search Publications
Scandium Abundance in F-G-K Stars in a Wide Metallicity Range
Mashonkina, L. I.; Romanovskaya, A. M.
A new Sc II model atom has been constructed using up-to-date atomic data. To test it, we have carried out nonlocal thermodynamic equilibrium (non-LTE) calculations for three stars with reliably determined atmospheric parameters: the Sun, HD 61421 (Procyon), and HD 84937. Allowance for the departures from LTE leads to a decrease in the root-mean-sq…
Estimation of the Mass of the Very Massive Galaxy Cluster SRGe CL2305.2-2248 from Strong Lensing
Bikmaev, I. F.; Gilfanov, M. R.; Khamitov, I. M. +10 more
SRGe CL2305.2-2248 (SPT-CL J2305-2248, ACT-CL J2305.1-2248) is one of the most massive galaxy clusters at high redshifts ($z∼eq 0.76$) and is of great interest for cosmology. Deep images have been obtained at the Russian-Turkish 1.5-m telescope (RTT-150) for an optical identification of this cluster. In combination with the open Hubble Space Teles…