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Thomas Bensby. Profile photo.

Thomas Bensby

Senior lecturer

Thomas Bensby. Profile photo.

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

Author

  • 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.

Department/s

  • Lund Observatory

Publishing year

2012

Language

English

Publication/Series

Assembling the Puzzle of the Milky Way

Volume

19

Document type

Conference paper

Publisher

EDP Sciences

Topic

  • 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

Status

Published

ISBN/ISSN/Other

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