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 contributionpeer-review

    Abstract

    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
    PublisherCambridge University Press
    Pages102-104
    Number of pages3
    ISBN (Print)9781107169883
    DOIs
    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
    Number321
    ISSN (Print)1743-9213

    Conference

    ConferenceInternational Astronomical Union Symposium (321st : 2016)
    CountrySpain
    CityToledo
    Period14/03/1618/03/16

    Keywords

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

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