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Sofia Feltzing

Professor

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

Författare

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

Summary, in English

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.

Avdelning/ar

  • Astronomi - Har omorganiserats

Publiceringsår

2012

Språk

Engelska

Publikation/Tidskrift/Serie

Assembling the Puzzle of the Milky Way

Volym

19

Dokumenttyp

Konferensbidrag

Förlag

EDP Sciences

Ämne

  • Astronomy, Astrophysics and Cosmology

Conference name

Conferences of the Assembling the Puzzle of the Milky Way

Conference date

2011-04-17 - 2011-04-22

Conference place

Le Grand-Bornand, France

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 2100-014X
  • ISSN: 2101-6275