Transition probabilities in singly ionized promethium and the identification of Pm ii lines in Przybylski's star and HR 465★ |
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| Authors: | V Fivet P Quinet É Biémont † A Jorissen A V Yushchenko S Van Eck |
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| Institution: | Astrophysique et Spectroscopie, Universitéde Mons, Hainaut, B-7000 Mons, Belgium;IPNAS, Universitéde Liège, Sart Tilman (Bât. B15), B-4000 Liège, Belgium;Institut d'Astrophysique, UniversitéLibre de Bruxelles, B-1050 Bruxelles, Belgium;Astrophysical Research Centre for the Structure and Evolution of the Cosmos, Sejong University, Seoul 143-747, South Korea;Astronomical Observatory, Odessa National University, Parc Shevchenko, Odessa 65014, Ukraine |
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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. |
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| Keywords: | atomic data line: identification stars: chemically peculiar |
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