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The discovery of a massive supercluster at z=0.9 in the UKIDSS DXS
A. M. Swinbank, A. Edge, I. Smail +19
We analyse the first publicly released deep field of the UKIDSS Deep eXtragalactic Survey (DXS) to identify candidate galaxy over-densities at z~1 across ~1 sq. degree in the ELAIS…
A Lensing Survey of X-ray Luminous Galaxy Clusters at Redshift z ~ 0.2: II: CFH12k Weak Lensing Analysis and Global Correlations
S. Bardeau, G. Soucail, J. P. Kneib +5
Aims: We present a wide-field multi-color survey of a homogeneous sample of eleven clusters of galaxies for which we measure total masses and mass distributions from weak lensing.…
Truncation of galaxy dark matter halos in high density environments
M. Limousin, J. P. Kneib, S. Bardeau +5
Our aim is to constrain the properties of dark matter halos inhabiting high density environments, such as is the case in massive galaxy clusters. We use galaxy-galaxy lensing techn…
Biased galaxy formation in the fields of high-redshift AGN
J. A. Stevens, M. J. Page, F. J. Carrera +2
We discuss preliminary results from our programme to map the fields of high-redshift AGN. In the context of the hierarchical models such fields are predicted to contain an over-den…
The 2dF-SDSS LRG and QSO Survey: The Star Formation Histories of Luminous Red Galaxies
Isaac G. Roseboom, Kevin A. Pimbblet, Michael J. Drinkwater +21
We present a detailed investigation into the recent star formation histories of 5,697 Luminous Red Galaxies (LRGs) based on the Hdelta (4101A) and [OII] (3727A) lines. LRGs are lum…
Galaxy clusters at 0.6 < z < 1.4 in the UKIDSS Ultra Deep Survey Early Data Release
C. van Breukelen, L. Clewley, D. G. Bonfield +16
We present the first cluster catalogue extracted from the UKIRT Infrared Deep Sky Survey Early Data Release. The catalogue is created using UKIDSS Ultra Deep Survey infrared J and…