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The origin of carbon, investigated by spectral analysis of solar-type stars in the Galactic Disk

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arxiv astro-ph/9811303 v1 pith:AWINGEZC submitted 1998-11-20 astro-ph

B. Gustafsson , T. Karlsson , E. Olsson , B. Edvardsson , N. Ryde This is my paper · ORCID
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Abundance analysis of carbon has been performed in a sample of 80 late F and early G type dwarf stars in the metallicity range -1.06 < [Fe/H] < 0.26 using the forbidden [C I] line at 8727 A. This line is presumably less sensitive to temperature, atmospheric structure and departures from LTE than alternative carbon criteria. We find that [C/Fe] decreases slowly with increasing [Fe/H] with an overall slope of -0.17 +- 0.03. Our results are consistent with carbon enrichment by superwinds of metal-rich massive stars but inconsistent with a main origin of carbon in low-mass stars. This follows in particular from a comparison between the relation of [C/O] with metallicity for the Galactic stars and the corresponding relation observed for dwarf irregular galaxies. The significance of intermediate-mass stars for the production of carbon in the Galaxy is still somewhat unclear.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. OpenAlex reports about 18 citations worldwide. Full citation record

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    astro-ph.SR 2026-06 unverdicted novelty 7.0 of 10

    Asteroseismic masses average 1.29 Msun for Ba dwarfs versus 1.96 Msun for Ba giants, supporting main-sequence accretion evolution from dwarfs to giants, though models fail to match the observed [hs/ls] ratio.

  2. Theoretical ISM pressure and electron density diagnostics for local and high-redshift galaxies

    astro-ph.GA 2019-08 conditional novelty 6.0 of 10

    A new grid of photoionization models calibrates UV, optical, and IR line ratios to ISM pressure and electron density, revealing strong metallicity and ionization-zone effects on traditional density diagnostics.

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