2006-06-05

mass accretion

At group meeting, Masjedi showed an amazing array of results, including that: the growth of luminous red galaxies by merging and accretion is limited to a few percent per Gyr at redshift of one third; dry mergers dominate the accretion rate; the transition from two-halo to one-halo term in the galaxy correlation function is clearly visible in the LRG-normal-galaxy cross-correlation; and some fraction of galaxies near LRGs seem to have tidally triggered star formation.

I didn't do much today except advise the troops.

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