Bibcode
Bertran de Lis, S.; Israelian, G.; Delgado Mena, E.
Referencia bibliográfica
Memorie della Societa Astronomica Italiana, v.85, p.261 (2014)
Fecha de publicación:
2014
Número de citas
0
Número de citas referidas
0
Descripción
We present a detailed and uniform study of oxygen abundances in a large
sample of solar-type stars. EW measurements were carried out for the
[OI] 6300 Å and the OI 6158 Å lines and LTE abundance
results for these indicators were obtained in 611 and 535 stars
respectively. 411 stars have oxygen derived from both indicators, which
allows us to perform the first uniform comparision of these two oxygen
indicators in a large sample of stars. We found that 65% of the stars
yield abundances that agree within 0.1dex, and this result improves for
better values of signal-to-noise. We also have studied the oxygen trends
for different galactic populations. We confirm an oxygen enhancement for
stars belonging to the thick disk, as it has been seen also for other
alpha elements.
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Garik
Israelian