Merger and Ring Galaxy Formation Rates at z<2

Mar, 2008
10 pages
Published in:
  • Mon.Not.Roy.Astron.Soc. 389 (2008) 1275
e-Print:

Citations per year

20082009201020112012120
Abstract: (arXiv)
We compare the observed merger rate of galaxies over cosmic time and the frequency of collisional ring galaxies (CRGs), with analytic models and halo merger and collision rates from a large cosmological simulation. In the Lambda cold dark matter (LCDM) model we find that the cosmic {\it merger fraction} does not evolve strongly between 0.2