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Unique distant classical Cepheid OGLE GD-CEP-1353 with anomalously high abundances of s- and r-process elements
V. V. Kovtyukh, S. M. Andrievsky, K. Werner +1
While looking for recently discovered distant Cepheids with an interesting chemical composition, we noticed one star (OGLE GD-CEP-1353) with extremely large equivalent widths of sp…
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…
Probing the Przybylski star for Deuterium
Sergei M. Andrievsky, Valery V. Kovtyukh
The Przybylski star spectrum has been studied in order to search for deuterium lines. Since this star is extremely enriched in the s-process elements, which are the product of inte…