RMxAA

Revista Mexicana de Astronomía y Astrofísica

ISSN: 3061-8649
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Keywords

galaxies: abundances
galaxies: spiral
HII regions

How to Cite

Chemical abundances of late-type spiral galaxies from the SDSS. (2012). Revista Mexicana De Astronomía Y Astrofísica, 48(2), 183-197. https://astronomia.unam.mx/journals/rmxaa/article/view/2012rmxaa..48..183h

Abstract

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.
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