SIMBAD references

2006A&A...452.1049G - Astronomy and Astrophysics, volume 452, 1049-1052 (2006/6-4)

High resolution optical spectroscopy of IRAS 09425-6040(=GLMP 260).

GARCIA-HERNANDEZ D.A., ABIA C., MANCHADO A. and GARCIA-LARIO P.

Abstract (from CDS):

We present high resolution optical spectroscopic observations of IRAS 09425-6040, a peculiar, extremely red, C-rich AGB star showing prominent O-rich dust features in its ISO infrared spectrum attributed to crystalline silicates. Our analysis shows that IRAS 09425-6040 is indeed a C-rich star slightly enriched in lithium (log(Li/H)+12∼0.7) with a low 12C/13C=15±6 ratio. We also found some evidence that it may be enriched in s-elements. Combining our results with other observational data taken from the literature we conclude that the star is possibly an intermediate-mass TP-AGB star (M>3M) close to the end of its AGB evolution which may have only very recently experienced a radical change in its chemistry, turning into a carbon-rich AGB star.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: individual: IRAS 09425-6040 - stars: abundances

Simbad objects: 4

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2006A&A...452.1049G and select 'bookmark this link' or equivalent in the popup menu


2023.01.27-11:53:33

© Université de Strasbourg/CNRS

    • Contact