uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Fluorine abundances in galactic asymptotic giant branch stars
Show others and affiliations
2010 (English)In: Astrophysical Journal, ISSN 2041-8205, Vol. 715, no 2, L94-L98 p.Article in journal (Refereed) Published
Abstract [en]

An analysis of the fluorine abundance in Galactic asymptotic giant branch (AGB) carbon stars (24 N-type, 5 SC-type, and 5 J-type) is presented. This study uses the state-of-the-art carbon-rich atmosphere models and improved atomic and molecular line lists in the 2.3 mu m region. Significantly lower F abundances are obtained in comparison to previous studies in the literature. This difference is mainly due to molecular blends. In the case of carbon stars of SC-type, differences in the model atmospheres are also relevant. The new F enhancements are now in agreement with the most recent theoretical nucleosynthesis models in low-mass AGB stars, solving the long-standing problem of F in Galactic AGB stars. Nevertheless, some SC-type carbon stars still show larger F abundances than predicted by stellar models. The possibility that these stars are of larger mass is briefly discussed.

Place, publisher, year, edition, pages
2010. Vol. 715, no 2, L94-L98 p.
Keyword [en]
nuclear reactions, nucleosynthesis, abundances, stars: abundances, stars: AGB and post-AGB, stars: carbon
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-136055DOI: 10.1088/2041-8205/715/2/L94ISI: 000278591800007OAI: oai:DiVA.org:uu-136055DiVA: diva2:376122
Available from: 2010-12-10 Created: 2010-12-09 Last updated: 2010-12-10Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
Department of Physics and Astronomy
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 184 hits
ReferencesLink to record
Permanent link

Direct link