The Origin of Galaxy Bimodality

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Density distributions of centrals and satellites low concentration systems: Centrals are brighter and bluer, especially at larger radii. high concentration systems: Surface photometry of centrals and satellites indistinguishable. Independent of concentration, centrals and satellites have the same average stellar surface density, consistent with satellites being quenched centrals. Weinmann et al. 2009 Frank van den Bosch University of Utah
Modeling Strangulation In standard SAMs, hot halo is instantaneously removed; results in red satellite fraction that is too large... Kang & van den Bosch (2008) see also Weinmann et al. (2006) and Baldy et al. (2006) Frank van den Bosch University of Utah
Page 1 and 2: The Origin of Galaxy Bimodality Wha
Page 3 and 4: The Bi-Modal Distribution of Galaxi
Page 5 and 6: central Galaxy Transformations orbi
Page 7 and 8: Outstanding Questions What fraction
Page 9 and 10: Blue-to-Red Transition Fractions Th
Page 11 and 12: Satellite Ecology Satellites Only!!
Page 13: The Dearth of Environment Dependenc
Page 17 and 18: Modeling Strangulation Half of orph
Page 19 and 20: The Fate of Satellite Galaxies Use
Page 21 and 22: The Fate of Satellite Galaxies We f
Page 23 and 24: The Fate of Disrupted Satellite Gal
Page 25 and 26: Conclusions What fraction of the re
Page 31: Frank’s hot advice: Stop fiddling

The Origin of Galaxy Bimodality

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