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- W2565756199 endingPage "173" @default.
- W2565756199 startingPage "145" @default.
- W2565756199 abstract "The analysis of the chemical composition of galaxies provides fundamental insights into their evolution. This holds true also in the case of the outer regions of spiral galaxies. This Chapter presents the observational data, accumulated in the past few years mostly from the analysis of HII region spectra, concerning the metallicity of the outer disks of spirals that are characterized by extended HI envelopes and low star formation rates. I present evidence from the literature that the metal radial distribution flattens at large galactocentric distances, with levels of enrichment that exceed those expected given the large gas mass fractions and the weak star formation activity. The interpretation of these results leads to speculations regarding mechanisms of metal mixing in galactic disks and the possibility that metal-enriched gas infall plays a role in determining the chemical evolution of the outskirts of spirals." @default.
- W2565756199 created "2017-01-06" @default.
- W2565756199 creator A5050714722 @default.
- W2565756199 date "2017-01-01" @default.
- W2565756199 modified "2023-09-28" @default.
- W2565756199 title "Metallicities in the Outer Regions of Spiral Galaxies" @default.
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