10-1093-MNRAS-stv2075.pdf (5.19 MB)
Galaxy and mass assembly (GAMA): projected galaxy clustering
journal contribution
posted on 2023-06-09, 01:16 authored by D J Farrow, Shaun Cole, Peder Norberg, N Metcalfe, I Baldry, Joss Bland-Hawthorn, Michael J I Brown, A M Hopkins, Cedric G Lacey, J Liske, Jonathan LovedayJonathan Loveday, David P Palamara, A S G Robotham, Srivatsan SridharWe 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 ~3L * r ~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.
Funding
Astronomy rolling grant; G0278; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I000976/1
History
Publication status
- Published
File Version
- Published version
Journal
Monthly Notices of the Royal Astronomical SocietyISSN
0035-8711Publisher
Oxford University PressExternal DOI
Issue
2Volume
454Page range
2120-2145Department affiliated with
- Physics and Astronomy Publications
Full text available
- Yes
Peer reviewed?
- Yes
Legacy Posted Date
2016-05-16First Open Access (FOA) Date
2016-05-16First Compliant Deposit (FCD) Date
2016-05-16Usage metrics
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