Abundance of manganese in metal-poor stars

Details Abundance of manganese in metal-poor stars Abundance of manganese in metal-poor stars

Jan 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...208..171g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 208, no. 1-2, Jan. 1989, p. 171-178.

Astronomy and Astrophysics

Astrophysics

113

Abundance, Manganese, Metallicity, Stellar Composition, Hydrogen, Hyperfine Structure, Iron, Spectrum Analysis, Stellar Gravitation

Scientific paper

The abundance of Mn is derived in 25 metal-poor stars (Fe/H between -2.4 and -0.1) of various evolutionary status, using transitions of weak and intermediate strength. Mn is deficient with respect to Fe in metal-poor stars. Observations suggest a constant Mn/Fe ratio for Fe/H less than -1, with a mean value of Mn/Fe = -0.34 + or - 0.06; the Mn/Fe ratio then increases for Fe/H greater than -1, up to the solar values. The run of Mn/Fe with metallicity is symmetric to the run of the ratios between the abundances of light even elements and Fe.

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