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.

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.

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. https://doi.org/10.1017/s1743921316011030

• Journal Article Type: Article
• Acceptance Date: Mar 1, 2016
• Online Publication Date: Mar 21, 2017
• Publication Date: Mar 1, 2016
• Deposit Date: Jun 28, 2018
• Publicly Available Date: Jul 12, 2018
• Journal: Proceedings of the International Astronomical Union
• Print ISSN: 1743-9213
• Electronic ISSN: 1743-9221
• Publisher: Cambridge University Press
• Peer Reviewed: Peer Reviewed
• Volume: 11
• Issue: S321
• Pages: 102-104
• DOI: https://doi.org/10.1017/s1743921316011030
• Public URL: https://hull-repository.worktribe.com/output/890887
• 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