Carbon and nitrogen abundances in Population I G and K giant stars from DDO photometry

Details Carbon and nitrogen abundances in Population I G and K giant stars from DDO photometry Carbon and nitrogen abundances in Population I G and K giant stars from DDO photometry

Oct 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.201..253b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 201, Oct. 1982, p. 253-263.

Astronomy and Astrophysics

Astronomy

8

Abundance, G Stars, Giant Stars, K Stars, Stellar Mass, Stellar Spectrophotometry, Stellar Temperature, Carbon, Convective Flow, Late Stars, Nitrogen, Spectroscopic Analysis

Scientific paper

It is shown that synthetic DDO photometric indices can be used with precise DDO photometric observations of Population I G and K giants to determine carbon and nitrogen abundances and temperatures for these stars. Results for 16 stars are given. They are compared with theoretical calculations of C/N ratios in giant stars after convective mixing of CN cycle processed material with the stellar atmosphere. Good agreement is found. The predicted stellar mass dependence of the C/N ratio is also observed. The results are in good agreement with the results of spectroscopic analyses of CN abundances by Lambert and Ries for the six stars in common.

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