Nucleosynthesis by accelerated particles to account for the surface composition of HD 101065

摘要: Context. Recent observations have suggested the presence of radioactive elements, such as Tc, Pm, and 84 $\le Z \le$ 99 elements at surface chemically-peculiar magnetic star HD 101065, also known Przybylski's star. The peculiar $35 Aims. large field observed in Ap stars can be origin a significant acceleration charged particles, mainly protons α -particles, that turn modify content by interaction with stellar material. This paper explores to what extent an irradiation process resulting from material energetic particles itself account for both abundances determined observation on chemically HD 101065 unstable elements. Methods. Due unknown characteristics accelerated could held responsible this nuclear process, purely parametric approach is followed, proton -particle flux amplitude energy distribution taken free parameters, well total fluence Results. kind least high fluences, lead rich nucleosynthesis, including production $Z >30$ heavy radioelements like Tc even transuranium. In respect, spectrum plays crucial role. Many observational aspects HD 101065's composition explained quantitatively. Conclusions. possible existence high-fluence events need confirmed hydrodynamics simulations but, most all, spectroscopic through detecting short-lived stars.