Galaxy and mass assembly (GAMA): Projected galaxy clustering

Daniel J Farrow, Shaun Cole, Peder Norberg, Nigel Metcalfe, Ivan K Baldry, Jonathan Bland-Hawthorn, Michael James Isles Brown, Andrew Mark Hopkins, Cedric G Lacey, Jochen Liske, Jonathan Loveday, David Peter Palamara, Aaron S G Robotham, Srivatsan Sridhar

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50 Citations (Scopus)


We measure the projected two-point correlation function of galaxies in the 180 deg2 equatorial regions of the GAMA II survey, for four different redshift slices between z = 0.0 and 0.5. To do this, we further develop the Cole method of producing suitable random catalogues for the calculation of correlation functions. We find that more r-band luminous, more massive and redder galaxies are more clustered. We also find that red galaxies have stronger clustering on scales less than ~3 h-1 Mpc. We compare to two different versions of the GALFORM galaxy formation model, Lacey et al. (in preparation) and Gonzalez-Perez et al., and find that the models reproduce the trend of stronger clustering for more massive galaxies. However, the models underpredict the clustering of blue galaxies, can incorrectly predict the correlation function on small scales and underpredict the clustering in our sample of galaxies with ~3Lr * . We suggest possible avenues to explore to improve these clustering predictions. The measurements presented in this paper can be used to test other galaxy formation models, and we make the measurements available online to facilitate this.

Original languageEnglish
Pages (from-to)2120-2145
Number of pages26
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
Publication statusPublished - 1 Jan 2015


  • Galaxies: evolution
  • Galaxies: formation
  • Large-scale structure of Universe

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