Feedback and late star formation in elliptical galaxies

Ignacio Ferreras, Evan Scannapieco, Joseph Silk

Research output: Contribution to journalArticlepeer-review


We present a one-zone model of star formation in elliptical galaxies that includes thermal feedback from supernovae and a temperature dependent star formation efficiency. The modulation of feedback with the total mass results in the triggering of late episodes of star formation in low-mass galaxies. These small 'bursts' can occur as late as at redshifts z ∼ 0.5 but they do not change significantly the optical and NIR color-magnitude relation (CMR) of cluster galaxies, both locally and out to moderate redshifts, in agreement with the observations. However, they introduce a large scatter at the faint end of the NUV-Optical CMR, as recently found in cluster Abell 851 (z = 0.41).

Original languageEnglish (US)
Pages (from-to)857-860
Number of pages4
JournalAstrophysics and Space Science
Issue number2
StatePublished - 2003
Externally publishedYes


  • Galaxies: elliptical and lenticular, cD
  • Galaxies: evolution
  • Galaxies: stellar content

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science


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