Rest-Frame UV and Visible Properties of Early Type Galaxies at 1 < z < 2

Conference paper
Part of the Astrophysics and Space Science Proceedings book series (ASSSP)


Massive early-type galaxies at intermediate redshift provide a unique perspective on star formation at early times. The rest-frame UV spectra of passively evolving systems provide constraints on the formation redshift and abundances for the oldest stars at a time when the universe was roughly 1/3 its present age. The passive galaxies have spectra characteristic of F stars with strong absorption from MgII, MgI and FeII. Best fitting ages are in the 1-3Gyr range and models with solar or super-solar abundances are preferred. These properties point towards an early formation epoch and rapid down-sizing in the star formation rate.


Star Formation High Redshift Stellar Mass Star Formation Rate Composite Spectrum 
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Copyright information

© Springer-Verlag New York 2009

Authors and Affiliations

  1. 1.Carnegie ObservatoriesPasadenaUSA

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