Overabundance of s-process elements in the atmosphere of the active red giant

摘要: Based on high-resolution (R=60000) spectra taken with the NES spectrograph (the 6-m BTA telescope, Special Astrophysical Observatory of Russian Academy Science), we have determined abundances 26 elements, from lithium to europium, in atmosphere active red giant PZ Mon, which belongs class RS CVn variable stars, by method model stellar atmospheres. We into account hyperfine splitting, isotopic shift, and departure local thermodynamic equilibrium. Analysis our data has revealed an overabundance neutron-capture elements compared normal giants. For lithium, this is explained activity star, while s-elements presumably similar nature that moderate barium stars.