Gas accretion as fuel for residual star formation in Galaxy Zoo elliptical galaxies

  title={Gas accretion as fuel for residual star formation in Galaxy Zoo elliptical galaxies},
  author={T. Davis and L. Young},
  journal={Monthly Notices of the Royal Astronomical Society},
  • T. Davis, L. Young
  • Published 2019
  • Physics
  • Monthly Notices of the Royal Astronomical Society
  • In this letter we construct a large sample of early-type galaxies with measured gas-phase metallicities from the Sloan Digital Sky Survey and Galaxy Zoo in order to investigate the origin of the gas that fuels their residual star formation. We use this sample to show that star forming elliptical galaxies have a substantially different gas-phase metallicity distribution from spiral galaxies, with ~7.4% having a very low gas-phase metallicity for their mass. These systems typically have fewer… CONTINUE READING

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