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The Origin of Galaxy Bimodality

The Origin of Galaxy Bimodality

The Origin of Galaxy Bimodality

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<strong>The</strong> Fate <strong>of</strong> Satellite Galaxies<br />

Use unevolved subhalo mass function to predict CLF <strong>of</strong> satellites,<br />

under the assumption that CLF <strong>of</strong> centrals does not evolve with redshift<br />

Yang, Mo & vdB (2009)<br />

Symbols: group catalogue<br />

Lines: model predictions<br />

Model overpredicts number <strong>of</strong> satellites, especially in low mass haloes.<br />

Satellites have to be (tidally) destroyed, or be accreted by centrals.<br />

Frank van den Bosch University <strong>of</strong> Utah

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