Sélection de la langue

Gouvernement du Canada / Government of Canada

Recherche

Possible iron abundance variations among superficially normal A stars

Par Conseil national de recherches du Canada

DOITrouver le DOI : https://doi.org/10.1086/159722
AuteurRechercher : 1; Rechercher : ; Rechercher : 1; Rechercher :
Affiliation
  1. Conseil national de recherches du Canada. Institut Herzberg d'astrophysique du CNRC
FormatTexte, Article
SujetA stars; abundance; early stars; iron; peculiar stars; stellar rotation; stellar spectra; B stars; interstellar matter; late stars: radial velocity
Résumé
The wavelength coincidence statistics (WCS) method is used to examine the high-dispersion spectra of a sample of superficially normal late B and early A stars selected on the basis of low projected rotational velocities. Two lists of about 70 strong and weak Fe II lines were used, and line intensities predicted for 10,000 K. On the basis of WCS for stars having published fine analyses, it is suggested that several stars in the sample are deficient in iron and may have sharper-lined spectra than the weak-lined A or Lambda Bootis stars previously recognized. It is further suggested that weak-lined stars, which may represent a large fraction of the late B and early A stars, may have a part of their peculiar chemistry arising from small abundance fluctuations in the interstellar medium.
Date de publication
Maison d’éditionAmerican Astronomical Society
IOP Publishing
Dans
  • The Astrophysical Journal 254 : 191–195.
Langueanglais
Publications évaluées par des pairsOui
Numéro du CNRCNRCC 21188
Numéro NPARC21275048
Exporter la noticeExporter en format RIS
Signaler une correctionSignaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrementf2b7854a-779b-423a-8e70-e7eaea45f5cc
Enregistrement créé2015-05-06
Enregistrement modifié2020-03-13
Date de modification :