3-d Large Scale Structure and Galaxy Evolution to z = 2.5

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Large Scale Structures have now been imaged (and animated in 3-d) in the COSMOS survey out to z = 2.5, using very high accuracy photometric redshifts for 300,000 galaxies. The structures are tracked over 30-50 Mpc for the first time at high redshifts. At lower redshifts, these baryonic structures seen in the galaxy distribution are compared with those seen in the weak lensing of dark matter. Galaxy properties such as mass, SFR, and spectral type are strongly dependant and determined by both environment and redshift. The observed structures and environmental dependence are compared with the evolution expected from the Millennium simulations.

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