SIMBAD references

2002A&A...381..982S - Astronomy and Astrophysics, volume 381, 982-992 (2002/1-3)

The C and N abundances in disk stars.


Abstract (from CDS):

Abundance analysis of carbon and nitrogen has been performed for a sample of 90 F and G type main-sequence disk stars with a metallicity range of -1.0<[Fe/H]<+0.2 using the CI and NI lines. We confirm a moderate carbon excess in the most metal-poor disk dwarfs found in previous investigations. Our results suggest that carbon is enriched by superwinds of metal-rich massive stars at the beginning of the disk evolution, while a significant amount of carbon is contributed by low-mass stars in the late stage. The observed behavior of [N/Fe] is about solar in the disk stars, irrespective of the metallicity. This result suggests that nitrogen is produced mostly by intermediate-mass stars.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: late-type - Galaxy: evolution - Galaxy: solar neighbourhood

Simbad objects: 90

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