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2007-09-01 - Article/Dans un journal avec peer-review - Anglais - 10 page(s)

Fivet Vanessa, Quinet Pascal , Biémont Emile , Jorissen A., Yushchenko A.V., Van Eck S., "Transition probabilities in singly ionized promethium and the identification of Pm II lines in Przybylski’s star and HR 465" in Monthly Notices of the Royal Astronomical Society, 380, 2, 771-780

  • Edition : Blackwell Publishing, Oxford (United Kingdom)
  • Codes CREF : Physique atomique et moléculaire (DI1220), Astrophysique (DI1455), Mécanique quantique classique et relativiste (DI1211)
  • Unités de recherche UMONS : Astrophysique et spectroscopie (S804)
Texte intégral :

Abstract(s) :

(Anglais) The first theoretical transition probabilities are obtained for a set of 46 PmII 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 PmII 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.

Identifiants :
  • DOI : 10.1111/j.1365-2966.2007.12118.x