Resumo

HIDALGO-GAMEZ, A. M.; MORANCHEL-BASURTO, A.  e  GONZALEZ-FAJARDO, A. F.. Chemical abundances of late-type spiral galaxies from the SDSS. Rev. mex. astron. astrofis [online]. 2012, vol.48, n.2, pp.183-197. ISSN 0185-1101.

Oxygen abundances have been determined for a total of 15 late-type spiral galaxies. The intensities of the emission lines were determined from the spectra retrieved from the SDSS data-base. Only three galaxies have abundances previously reported in the literature. For four of them the forbidden oxygen line was detected in the spectra but the T_e determined for three of them is larger than 20,000 K. The chemical abundances for the other galaxies were determined with semi-empirical methods. The values indicate that, in general, the oxygen abundance of dS galaxies is smaller than for Sm ones.

Palavras-chave : galaxies [abundances]; galaxies [spiral]; galaxies [H II regions].

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