Oxygen abundances in old disc and halo stars of the Galaxy

Details Oxygen abundances in old disc and halo stars of the Galaxy Oxygen abundances in old disc and halo stars of the Galaxy

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989ap%26ss.157...55r&link_type=abstract

(Instituto de Astrofisica de Canarias and Comision Interministerial de Ciencia y Tecnologia, Summer School on Evolutionary Pheno

Astronomy and Astrophysics

Astrophysics

1

Abundance, Accretion Disks, Late Stars, Oxygen, Stellar Spectra, Chemical Evolution, Milky Way Galaxy, Stellar Composition

Scientific paper

Intermediate resolution CCD spectra of the oxygen triplet at 7770 A have been analyzed to determine oxygen abundances in a sample of metal-deficient stars with metallicities covering the range of Fe/H values between -0.2 and -2.5. Important oxygen overabundances (O/F values of not less than 1) are found in the more metal deficient stars of the sample. The information that these observations provide about the early nucleosynthesis history and chemical evolution of the Galaxy is briefly discussed.

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