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Deep Investigation of Neutral Gas Origins (DINGO): HI stacking experiments with early science data
Jonghwan Rhee, Martin Meyer, Attila Popping +19
We present early science results from Deep Investigation of Neutral Gas Origins (DINGO), an HI survey using the Australian Square Kilometre Array Pathfinder (ASKAP). Using ASKAP su…
Red riding on hood: Exploring how galaxy colour depends on environment
Pankaj C. Bhambhani, Ivan. K. Baldry, Sarah Brough +4
Galaxy populations are known to exhibit a strong colour bimodality, corresponding to blue star-forming and red quiescent subpopulations. The relative abundance of the two populatio…
Galaxy and Mass Assembly (GAMA): Probing galaxy-group correlations in redshift space with the halo streaming model
Qianjun Hang, John A. Peacock, Shadab Alam +6
We have studied the galaxy-group cross-correlations in redshift space for the Galaxy And Mass Assembly (GAMA) Survey. We use a set of mock GAMA galaxy and group catalogues to devel…
Exploring the effect of baryons on the radial distribution of satellite galaxies with GAMA and IllustrisTNG
Stephen D. Riggs, Jon Loveday, Peter A. Thomas +3
We explore the radial distribution of satellite galaxies in groups in the Galaxy and Mass Assembly (GAMA) survey and the IllustrisTNG simulations. Considering groups with masses $1…
The XXL Survey XLV. Linking the ages of optically selected groups to their X-ray emission
J. P. Crossett, S. L. McGee, T. J. Ponman +16
We investigate the properties of 232 optical spectroscopically selected groups from the Galaxy And Mass Assembly (GAMA) survey that overlap the XXL X-ray cluster survey. X-ray aper…
An empirical measurement of the Halo Mass Function from the combination of GAMA DR4, SDSS DR12, and REFLEX II data
Simon P. Driver, Aaron S. G. Robotham, Danail Obreschkow +13
We construct the halo mass function (HMF) from the GAMA galaxy group catalogue over the mass range 10^12.7M_sol to 10^15.5M_sol, and find good agreement with the expectation from L…