Detection of elements beyond the Ba-peak in VLT+UVES spectra of post-AGB stars

Free access article

Issue		A&A Volume 408, Number 3, September IV 2003


Page(s)		L33 - L37
Section		Letters
DOI		http://dx.doi.org/10.1051/0004-6361:20031200

A&A 408, L33-L37 (2003)
DOI: 10.1051/0004-6361:20031200

Letter

Detection of elements beyond the Ba-peak in VLT+UVES spectra of post-AGB stars

M. Reyniers and H. Van Winckel

Departement Natuurkunde en Sterrenkunde, K.U. Leuven, Celestijnenlaan 200B, 3001 Leuven, Belgium
(Received 14 May 2003 / Accepted 1 August 2003 )

Abstract
In this letter, we report on our successful systematic search for lines of elements beyond the Ba-peak in spectra of s-process enriched post-AGB stars. Using newly released atomic data from both the VALD database and the D.R.E.A.M. project, we could derive abundances for several elements heavier than europium for three objects, on the base of high quality VLT+UVES spectra. The abundances of these elements are of particular interest since they turn out to be powerful constraints for chemical evolutionary AGB models. Their high abundances indicate that, also in only moderately metal deficient AGB stars, production of lead is expected to be significant.

Key words: line: identification -- stars: AGB and post-AGB -- stars: abundances -- stars: chemically peculiar

Offprint request: M. Reyniers, Maarten.Reyniers@ster.kuleuven.ac.be

SIMBAD Objects

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access. An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
You can define your own OpenURL resolver with your EDPS Account. In this case your choice will be given priority over that of your library.
You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.