The SLUGGS survey: exploring the metallicity gradients of nearby early-type galaxies to large radii

  title={The SLUGGS survey: exploring the metallicity gradients of nearby early-type galaxies to large radii},
  author={N. Pastorello and D. Forbes and C. Foster and J. Brodie and Christopher Usher and A. Romanowsky and J. Strader and J. Arnold},
  journal={Monthly Notices of the Royal Astronomical Society},
  • N. Pastorello, D. Forbes, +5 authors J. Arnold
  • Published 2014
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • Stellar metallicity gradients in the outer regions of galaxies are a critical tool for disentangling the contributions of in-situ and ex-situ formed stars. In the two-phase galaxy formation scenario, the initial gas collapse creates steep metallicity gradients, while the accretion of stars formed in satellites tends to flatten these gradients in the outskirts, particularly for massive galaxies. This work presents the first compilation of extended metallicity profiles over a wide range of galaxy… CONTINUE READING
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