Poster Presentation Astronomical Society of Australia Annual Scientific Meeting including HWWS 2013

The clustering of GAMA galaxies: dependence on color, luminosity, mass and redshift. (#255)

David Palamara 1 , Michael Brown 1
  1. MoCA (Monash Centre for Astrophysics), Clayton, VIC, Australia

Present galaxy evolution theory has been shaped by the statistical analysis of large-scale galaxy redshift surveys such as the Sloan Digital Sky Survey (SDSS). The 3D distribution of galaxies has influenced our understanding of the underlying Cosmology and dark matter structure of the Universe. How different galaxies trace this underlying structure gives insight into small-scale processes of galaxy formation, such as the merger growth rate and star formation rate (SFR) dependence on environment, etc. While surveys such as SDSS map a wide area, they span a restricted range in look back time and thus limit our ability to trace how these relationships evolve over cosmic time. The Galaxy And Mass Assembly (GAMA) survey1 , which covers ≈300 deg2 and has a mean redshift of z≈0.2, provides an ideal testing ground to push our understanding of how these relationships evolve over a large span of cosmic time. We present the first measures of the 2-point correlation function for GAMA galaxies as a function of color, luminosity, mass and redshift. These measurements will provide the strongest tests of galaxy formation models out to z=0.5 to date. 

  1. S.P. Driver, P. Norberg, I.K. Baldry, S.P. Bamford, A.M. Hopkins, J. Liske, J. Loveday, J.A. Peacock and the GAMA Team, 2009, Astronomy & Geophysics, 50, 5.12.