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A massive, quiescent, population II galaxy at a redshift of 2.1

Mariska Kriek1, Charlie Conroy2, Pieter G van Dokkum3

  • 1Department of Astronomy, University of California, Berkeley, California 94720, USA.

Nature
|December 9, 2016
PubMed
Summary

Massive elliptical galaxies formed most stars early in the Universe. Studying a galaxy at redshift z=2.1 revealed a high magnesium-to-iron ratio ([Mg/Fe]), indicating rapid early star formation.

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