Carbon, nitrogen, and oxygen abundances in M67 giants

Details Carbon, nitrogen, and oxygen abundances in M67 giants Carbon, nitrogen, and oxygen abundances in M67 giants

Oct 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985apj...297..233b&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 297, Oct. 1, 1985, p. 233-239.

Astronomy and Astrophysics

Astrophysics

16

Abundance, Carbon Stars, Giant Stars, Nitrogen, Oxygen, Stellar Composition, Cyanogen, High Resolution, Late Stars, Spectral Resolution, Spectrum Analysis, Stellar Atmospheres, Stellar Mass, Stellar Models

Scientific paper

C, N, and O abundances are presented for three giants in M67. The abundances were determined by model atmosphere analysis of high-resolution spectra of the C2 1-0 and Δυ = 0 Swan band features, the [O I] 6300 Å line, and CN red system lines. The three giants are of identical composition, except possibly for 12C/13C ratio, and are similar to low-mass giants in the field. The abundance results are log ɛ(C) = 8.3, log ɛ(N) = 8.35, and log ɛ(O) = 8.7.

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