Carbon and oxygen abundances of field RR Lyrae stars. I - Carbon abundances

Details Carbon and oxygen abundances of field RR Lyrae stars. I - Carbon abundances Carbon and oxygen abundances of field RR Lyrae stars. I - Carbon abundances

Apr 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87..640b&link_type=abstract

Astronomical Journal, vol. 87, Apr. 1982, p. 640-649.

Astronomy and Astrophysics

Astronomy

19

Abundance, Carbon, Giant Stars, Oxygen, Stellar Spectrophotometry, Variable Stars, Astronomical Catalogs, Iron, Line Spectra, Spectral Line Width, Star Distribution, Stellar Atmospheres, Stellar Evolution, Ubv Spectra

Scientific paper

Use of conventional LTE line-formation formalism to deduce carbon abundances and carbon-to-iron ratios for a large number of field RR Lyrae stars is reported. For the most metal-rich stars, estimations are made for nitrogen abundances that are considerably less certain than those for carbon. The photometric indices, spectroscopic observations, the C I and N I line equivalent widths, atmospheric parameters, solar equivalent widths and log gf values, abundances and variational relations are shown.

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