The significant contribution of minor mergers to the cosmic star formation budget

  title={The significant contribution of minor mergers to the cosmic star formation budget},
  author={Sugata Kaviraj},
  journal={Monthly Notices of the Royal Astronomical Society},
  • S. Kaviraj
  • Published 30 September 2013
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We estimate an empirical lower limit for the fraction of cosmic star formation that is triggered by minor mergers in the local Universe. Splitting the star-formation budget by galaxy morphology, we find that early-type galaxies (ETGs) host �14% of the budget, while Sb/Sc galaxies host the bulk (�53%) of the local star formation activity. Recent work indicates that star formation in nearby ETGs is driven by minor mergers, implying that at least �14% of local star formation is triggered by this… 

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