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Transition probabilities in singly ionized promethium and the identification of Pm ii lines in Przybylski's star and HR 465

par Fivet, Vanessa;Quinet, Pascal;Biémont, Emile;Jorissen, Alain ;Yushchenko, Alexander;Van Eck, Sophie
Référence Monthly notices of the Royal Astronomical Society, 380, 2, page (771-780)
Publication Publié, 2007-09

Article révisé par les pairs

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ABSTRACT The first theoretical transition probabilities are obtained for a set of 46 Pm ii transitions of astrophysical interest. These data fill in a gap in astrophysics and will allow to establish, on a firmer basis, the presence of some lines of this radioactive element in the spectra of chemically peculiar stars and, consequently, a quantitative investigation of the stellar Pm abundance. A search for Pm ii lines in Przybylski's star (HD 101065) and in HR 465 is reported and discussed, supporting the detection of this ion. A more detailed quantitative analysis is awaiting the availability of dedicated model atmospheres for these stars. © 2007 The Authors. Journal compilation © 2007 RAS.