The chemical evolution of the Galactic Bulge seen through micro-lensing events

Sofia Feltzing, Thomas Bensby, J. Melendez, Daniel Adén, M. Asplund, A. Gould, J. Johnson, S. Lucatello, A. Gal-Yam

    Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

    171 Nedladdningar (Pure)

    Sammanfattning

    Galactic bulges are central to understanding galaxy formation and evolution. Here we report on recent studies using micro-lensing events to obtain spectra of high resolution and moderately high signal-to-noise ratios of dwarf stars in the Galactic bulge. Normally this is not feasible for the faint turn-off stars in the Galactic bulge, but micro-lensing offers this possibility. Elemental abundance trends in the Galactic bulge as traced by dwarf stars are very similar to those seen for dwarf stars in the solar neighbourhood. We discuss the implications of the ages and metallicity distribution function derived for the micro-lensed dwarf stars in the Galactic bulge.
    Originalspråkengelska
    Titel på värdpublikationAssembling the Puzzle of the Milky Way
    FörlagEDP Sciences
    Volym19
    DOI
    StatusPublished - 2012
    EvenemangConferences of the Assembling the Puzzle of the Milky Way - Le Grand-Bornand, Frankrike
    Varaktighet: 2011 apr. 172011 apr. 22

    Publikationsserier

    Namn
    Volym19
    ISSN (tryckt)2101-6275
    ISSN (elektroniskt)2100-014X

    Konferens

    KonferensConferences of the Assembling the Puzzle of the Milky Way
    Land/TerritoriumFrankrike
    OrtLe Grand-Bornand
    Period2011/04/172011/04/22

    Ämnesklassifikation (UKÄ)

    • Astronomi, astrofysik och kosmologi

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