Journeying the Redshift Desert

Details Journeying the Redshift Desert Journeying the Redshift Desert

2009-06-25

arxiv.org/abs/0906.4662v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

11 pages and 11 figures. To appear on the September 2009 issue of ESO's "The Messenger"

Scientific paper

The cosmic star formation rate, AGN activity, galaxy growth, mass assembly and morphological differentiation all culminate at redshift $\sim 2$. Yet, the redshift interval $1.4\lsim z\lsim 3$ is harder to explore than the closer and the more distant Universe. In spite of so much action taking place in this spacetime portion of the Universe, it has been dubbed the ``Redshift Desert'', as if very little was happening within its boundaries. The difficulties encountered in properly mapping the galaxy populations inhabiting the Desert are illustrated in this paper, along with some possible remedy.

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