SIMBAD references

2010ApJ...715L..94A - Astrophys. J., 715, L94-L98 (2010/June-1)

Fluorine abundances in galactic asymptotic giant branch stars.

ABIA C., CUNHA K., CRISTALLO S., DE LAVERNY P., DOMINGUEZ I., ERIKSSON K., GIALANELLA L., HINKLE K., IMBRIANI G., RECIO-BLANCO A., SMITH V.V., STRANIERO O. and WAHLIN R.

Abstract (from CDS):

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 µm 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.

Abstract Copyright:

Journal keyword(s): nuclear reactions, nucleosynthesis, abundances - stars: abundances - stars: AGB and post-AGB - stars: carbon

Simbad objects: 36

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2019.12.06-13:41:10

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