Early-type galaxies at large galactocentric radii: II. Metallicity gradients and the [Z/H]-mass, [α/Fe]-mass relations

  title={Early-type galaxies at large galactocentric radii: II. Metallicity gradients and the [Z/H]-mass, [$\alpha$/Fe]-mass relations},
  author={Max Spolaor and Chiaki Kobayashi and Duncan A Forbes and Warrick J. Couch and George K. T. Hau},
  journal={Monthly Notices of the Royal Astronomical Society},
We present the results of a study of stellar population properties at large galactocentric radii of 14 low-mass early-type galaxies in the Fornax and Virgo clusters. We derive radial profiles of Age, total metallicity [Z/H], and [�/Fe] abundance ratios out to � 1 3 effective radii by using nearly all of the Lick/IDS absorption-line indices in comparison to recent single stellar population models. We extend our study to higher galaxy mass via a novel literature compilation of 37 early-type… Expand
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