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Properties of the outer regions of spiral disks: Abundances, colors and ages

Mollá, Mercedes; Díaz, Angeles I.; Gibson, Brad K.; Cavichia, Oscar; López-Sánchez, Ángel-R.

Authors

Mercedes Mollá

Angeles I. Díaz

Oscar Cavichia

Ángel-R. López-Sánchez



Abstract

© 2017 International Astronomical Union. We summarize the results obtained from our suite of chemical evolution models for spiral disks, computed for different total masses and star formation efficiencies. Once the gas, stars and star formation radial distributions are reproduced, we analyze the Oxygen abundances radial profiles for gas and stars, in addition to stellar averaged ages and global metallicity. We examine scenarios for the potential origin of the apparent flattening of abundance gradients in the outskirts of disk galaxies, in particular the role of molecular gas formation prescriptions.

Journal Article Type Article
Publication Date Mar 1, 2016
Journal Proceedings of the International Astronomical Union
Print ISSN 1743-9213
Electronic ISSN 1743-9221
Publisher Cambridge University Press (CUP)
Peer Reviewed Peer Reviewed
Volume 11
Issue S321
Pages 102-104
APA6 Citation Mollá, M., Díaz, A. I., Gibson, B. K., Cavichia, O., & López-Sánchez, Á. (2016). Properties of the outer regions of spiral disks: Abundances, colors and ages. IAU symposium and colloquium proceedings series / International Astronomical Union. Symposium, 11(S321), 102-104. doi:10.1017/s1743921316011030
DOI https://doi.org/10.1017/s1743921316011030
Publisher URL https://www.cambridge.org/core/journals/proceedings-of-the-international-astronomical-union/article/properties-of-the-outer-regions-of-spiral-disks-abundances-colors-and-ages/8C4282C736D0C115FC340131AE303C1B
Copyright Statement ©2018 The authors

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