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An Analysis of DES Cluster Simulations through the IMCAT and Shapelets Weak Lensing Pipelines
M. S. S. Gill, J. C. Young, J. P. Draskovic +8
We have run two completely independent weak lensing analysis pipelines on a set of realistic simulated images of a massive galaxy cluster with a singular isothermal sphere profile…
Precision Measurements of the Cluster Red Sequence using an Error Corrected Gaussian Mixture Model
Jiangang Hao, Benjamin P. Koester, Timothy A. Mckay +10
The red sequence is an important feature of galaxy clusters and plays a crucial role in optical cluster detection. Measurement of the slope and scatter of the red sequence are affe…
Lensing Bias in Cosmic Shear
Fabian Schmidt, Eduardo Rozo, Scott Dodelson +2
Only galaxies bright enough and large enough to be unambiguously identified and measured are included in galaxy surveys used to estimate cosmic shear. We demonstrate that because g…
Size Bias in Galaxy Surveys
Fabian Schmidt, Eduardo Rozo, Scott Dodelson +2
Only certain galaxies are included in surveys: those bright and large enough to be detectable as extended sources. Because gravitational lensing can make galaxies appear both brigh…
Cosmological Constraints from the SDSS maxBCG Cluster Catalog
Eduardo Rozo, Risa H. Wechsler, Eli S. Rykoff +11
We use the abundance and weak lensing mass measurements of the SDSS maxBCG cluster catalog to simultaneously constrain cosmology and the richness--mass relation of the clusters. As…