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- W71378192 abstract "The oxygen abundances for four dwarf spiral galaxies have been determined using long-slit spectroscopy. The abundances of these galaxies have not previously reported in the literature. Several HII regions were detected in each galaxy. The electronic temperature method could be used only in one region because of the lack of the auroral lines of oxygen or sulfur. Therefore, four different semi empirical methods were used in the abundance determinations and a weighted-average abundance is obtained. The abundances of three of the galaxies are sub solar for all the regions, one of them having a very low metallicity. Only three HII regions in the fourth galaxy show slightly over solar abundances. Three of the HII regions might have a PN embedded. A comparison with the oxygen abundances among different types of late-type galaxies (BCG, LSBG, dI, Sm) is made. The conclusion is that all of them show the same range in metallicity. Also, the log(N/O) is similar, showing a secondary behaviour for abundances larger than 8.2 dex in spite of the morphological type of the mother galaxy." @default.
- W71378192 created "2016-06-24" @default.
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- W71378192 date "2010-10-28" @default.
- W71378192 modified "2023-10-18" @default.
- W71378192 title "Spectroscopic observations of a sample of dwarf spirals galaxies. I.Oxygen abundances" @default.
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