Properties of the outer regions of spiral disks

abundances, colors and ages

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

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contribution


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.

Original languageEnglish
Title of host publicationFormation and evolution of galaxy outskirts
Subtitle of host publicationproceedings of the 321st symposium of the International Astronomical Union held in Toledo, Spain, March 14-18, 2016
EditorsArmando Gil de Paz, Johann H. Knapen, Janice C. Lee
Place of PublicationCambridge
Number of pages3
Publication statusPublished - 1 Mar 2016
EventInternational Astronomical Union Symposium (321st : 2016) - Toledo, Spain
Duration: 14 Mar 201618 Mar 2016

Publication series

NameIAU Symposium proceedings series
PublisherCambridge University Press
ISSN (Print)1743-9213


ConferenceInternational Astronomical Union Symposium (321st : 2016)


  • galaxies: abundances
  • Galaxy: abundances
  • Galaxy: evolution
  • ISM: abundances

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