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Living fossils: A detailed view of distant Lyman break galaxies using ...

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Collisional starbursts have been suggested to be the dominant<br />

mechanism to turn gas into stars at high redshift:<br />

(Somerville, Primack & Faber 2001)<br />

Simulations/models predict that<br />

Collisional starbursts triggered by<br />

(minor) mergers are responsible for<br />

• 70% <strong>of</strong> SFRD at z=4<br />

• 45% at z=1.5<br />

• quiescent star formation<br />

dominates now<br />

This scenario seems to have<br />

been confirmed based on the<br />

sample <strong>of</strong> local LBG analogs<br />

Berkeley - 5 Feb 2008 Roderik Overzier - Local LBG Analogs

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