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Element identification in Przybylski's star

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1086/155440
AuteurRechercher : 1; Rechercher : 1; Rechercher : 1; Rechercher :
Affiliation
  1. Conseil national de recherches du Canada. Institut Herzberg d'astrophysique du CNRC
FormatTexte, Article
SujetA stars; abundance; chemical elements; stellar spectra; atomic spectra; line spectra; radial velocity; stellar spectrophotometry
Résumé
The method of Hartoog, Cowley, and Cowley (1973) is applied to the general question of element identification in HD 101065, which is often referred to as 'Przybylski's holmium star'. Three spectrograms are analyzed for wavelength coincidences, and a search is conducted for 187 atomic and ionic spectra of 92 elements. Most of the lanthanides, Ca II, and Y II are positively identified, but only weak evidence is found for the iron-peak elements. Some general remarks are made concerning the relative abundances (or absence) of Fe, Co, Y, Zr, Te, Tb, Lu, Yb, Nd, and U. No evidence is obtained for spectral variations or significant radial-velocity variations. It is concluded that iron-peak elements are present in this star, that their spectra are unusually weak with the possible exception of Co I, and that HD 101065 is apparently the only star of the magnetic chemically peculiar sequence with a lanthanide/iron-peak abundance ratio greater than unity.
Date de publication
Maison d’éditionAmerican Astronomical Society
IOP Publishing
Dans
  • The Astrophysical Journal 216 : 37–41.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCNRCC 15605
Numéro NPARC21275039
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Identificateur de l’enregistrement60c5ade5-c161-4921-93eb-f6fcdffcc5a0
Enregistrement créé2015-05-05
Enregistrement modifié2020-03-13
Date de modification :