Isotopic magnesium abundances in stars

Details Isotopic magnesium abundances in stars Isotopic magnesium abundances in stars

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988mnras.230..573m&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 230, Feb. 15, 1988, p. 573-585. Research supported by t

Astronomy and Astrophysics

Astronomy

33

Abundance, Magnesium Compounds, Magnesium Isotopes, Stellar Composition, G Stars, High Resolution, Late Stars, Metallicity, Nuclear Fusion, Stellar Spectra

Scientific paper

High-resolution spectra of the MgH A-X system near 5130 Å provide the isotopic abundance ratios 25Mg/24Mg and 26Mg/24Mg for a sample of stars including several old disc dwarfs and giants, a classical and a mild barium star, and a weak G-band giant. The 25Mg and 26Mg isotopes are underabundant in metal-poor stars. This result is qualitatively consistent with predictions of stellar nucleosynthesis. The isotopic ratios are normal for the barium stars and the weak G-band star.

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