Date:
Sun, 19/04/200911:00-12:00
Location:
Kaplun Bldg, seminar room, 2nd floor
Galaxy Scaling relations and cold flows
Despite significant progress in our understanding of galaxy formation at z > 2, the origin of the scaling relations for star-forming galaxies is still debated. Two relevant scaling relations are the Tully-Fischer (TF) relation and the strongly evolving SFR-stellar mass relation (SFR \propto M_*^0.8), which is sometimes referred to as the blue-sequence. Surprisingly, these three relationships are not independent. In addition, we show that the cosmological accretion rate of baryons onto galaxy haloes appear to directly regulate how these scaling relations evolve with cosmic times.
Despite significant progress in our understanding of galaxy formation at z > 2, the origin of the scaling relations for star-forming galaxies is still debated. Two relevant scaling relations are the Tully-Fischer (TF) relation and the strongly evolving SFR-stellar mass relation (SFR \propto M_*^0.8), which is sometimes referred to as the blue-sequence. Surprisingly, these three relationships are not independent. In addition, we show that the cosmological accretion rate of baryons onto galaxy haloes appear to directly regulate how these scaling relations evolve with cosmic times.