SIMBAD references

2002ApJ...564..482R - Astrophys. J., 564, 482-494 (2002/January-1)

Spectroscopic analysis of two carbon-rich post-asymptotic giant branch stars.


Abstract (from CDS):

The chemical compositions of the C-rich post-asymptotic giant branch (pAGB) stars IRAS 05113+1347 and IRAS 22272+5424 are determined from high-resolution optical spectra using standard LTE model atmosphere-based techniques. The stars are C, N, and s-process enriched, suggesting efficient operation of the third dredge-up in the AGB star following a first dredge-up that increased the N abundance. Lithium is present with an abundance requiring Li manufacture. With this pair, abundance analyses are now available for 11 C-rich pAGBs. A common history is indicated and, in particular, the s-abundances, especially the relative abundances of light to heavy s-process elements, follow recent predictions for the third dredge-up in AGB stars.

Abstract Copyright:

Journal keyword(s): Stars: Abundances - Stars: AGB and Post-AGB - stars: individual (IRAS 05113+1347, IRAS 22272+5435)

CDS comments: In the abstract IRAS 22272+5424 misprint for 22272+5435, p.487 : IRAS 02229+6208 is IRAS Z02229+6208

Simbad objects: 13

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