Spectroscopic analysis of chemically peculiar stars: abundance determination of lithium and some rare earth elements
- Author(s)
- N. A Drake, Nicole Nesvacil, Svetlana Hubrig, Oleg Kochukhov, Ramiro de La Reza, Nina Polosukhina, Jorge Federico González
- 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.
- Organisation(s)
- Department of Astrophysics
- External organisation(s)
- Observatório Nacional/MCT, European Southern Observatory (Chile), Complejo Astronómico El Leoncito, Uppsala University, Crimean Astrophysical Observatory
- Pages
- 89-90
- No. of pages
- 2
- DOI
- https://doi.org/10.1017/S1743921305005302
- Publication date
- 2005
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/1e7f0966-f4f1-4845-a8a5-b0a8b011a3e2