Carbon-to-iron ratio in extreme population II stars

Details Carbon-to-iron ratio in extreme population II stars Carbon-to-iron ratio in extreme population II stars

Sep 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...101..365b&link_type=abstract

Astronomy and Astrophysics, vol. 101, no. 3, Sept. 1981, p. 365-368. Research supported by the Conselho Nacional de Pesquisas o

Astronomy and Astrophysics

Astrophysics

35

Carbon Stars, Globular Clusters, Iron, Molecular Spectra, Nuclear Fusion, Stellar Spectra, Abundance, Halos, Line Spectra, Stellar Models

Scientific paper

The synthetic spectrum technique applied to the molecular feature of the CH (A2Δ-X2π) band near λ4300 Å was employed to obtain carbon abundances in some very old, extremely metal deficient halo stars.
The unevolved stars in the current sample show the null-hypothesis result [C/M] ≃ 0.0, whereas for the evolved ones carbon depletions appear as a signature of mixing effects.

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