Spectroscopic analysis of chemically peculiar stars: abundance determination of lithium and some rare earth elements

N. A Drake, Nicole Nesvacil, Svetlana Hubrig, Oleg Kochukhov, Ramiro de La Reza, Nina Polosukhina, Jorge Federico González

Veröffentlichungen: Beitrag in BuchBeitrag in Konferenzband

Abstract

We present the results of a study of some selected spectral regions, including those around the LiI lines at 6708 Å and 6104 Å in the magnetic chemically peculiar star HD 3980 and in a few other Ap stars with different effective temperatures and different strengths of the magnetic field. High resolution spectroscopic observations were carried out with the Coudé echelle spectrograph at the 74-inch telescope of the Mount Stromlo Observatory (R=88000) and with the VLT UV-Visual Echelle Spectrograph UVES at UT2 at ESO (R=110000). Using spectral synthesis we determined abundances of Li, Ce, Pr, Nd and some other rare earth elements and showed that the spectral feature at 6708 Å in the spectrum of HD 3980 is due to the Li I doublet with only a minor contribution of the Ce II line at 6708.099 Å.
OriginalspracheEnglisch
TitelFrom lithium to uranium: elemental tracers of the early chemical evolution
Untertitelproceedings of the 228th Symposium of the International Astronomical Union held in Paris, France, May 23-27, 2005
Redakteure*innenVanessa Hill
ErscheinungsortCambridge
Herausgeber (Verlag)Cambridge University Press
Seiten89-90
Seitenumfang2
ISBN (Print)0-521-85199-8
DOIs
PublikationsstatusVeröffentlicht - 2005

Publikationsreihe

ReiheSymposium - International Astronomical Union
Band228
ISSN0074-1809

ÖFOS 2012

  • 1030 Physik, Astronomie

Zitationsweisen