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Non-LTE abundance analysis of A-B stars with low rotational velocities. II. Do A-B stars with normal abundances exist?
A. M. Romanovskaya, T. A. Ryabchikova, Yu. V. Pakhomov +2
We present chemical composition and fundamental parameters (the effective temperature, surface gravity and radius) for four sharp-lined A-type stars Gem (HD 41705), o Peg (HD 2…
Abundance of radioactive technetium in Przybylski's star revisited
S. M. Andrievsky, S. A. Korotin, K. Werner
We have searched for lines of the radioactive element technetium (Tc) in the spectrum of Przybylski's star (HD101065). The nuclei of this chemical element are formed in the slow pr…
An enigma of Przybylski's star: is there promethium on its surface?
Sergei M. Andrievsky, Sergey A. Korotin, Klaus Werner +1
We carried out a new attempt to check for the presence promethium lines in the spectrum of HD101065 (Przybylski's star). The neutron capture element promethium does not have stable…