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The Splashback Feature around DES Galaxy Clusters: Galaxy Density and Weak Lensing Profiles
C. Chang, E. Baxter, B. Jain +82
Splashback refers to the process of matter that is accreting onto a dark matter halo reaching its first orbital apocenter and turning around in its orbit. The cluster-centric radiu…
Density split statistics: Cosmological constraints from counts and lensing in cells in DES Y1 and SDSS data
D. Gruen, O. Friedrich, E. Krause +93
We derive cosmological constraints from the probability distribution function (PDF) of evolved large-scale matter density fluctuations. We do this by splitting lines of sight by de…
Dark Energy Survey Year 1 Results: The Impact of Galaxy Neighbours on Weak Lensing Cosmology with im3shape
S. Samuroff, S. L. Bridle, J. Zuntz +68
We use a suite of simulated images based on Year 1 of the Dark Energy Survey to explore the impact of galaxy neighbours on shape measurement and shear cosmology. The hoopoe image s…
Dark Energy Survey Year 1 Results: Cosmological Constraints from Cosmic Shear
M. A. Troxel, N. MacCrann, J. Zuntz +132
We use 26 million galaxies from the Dark Energy Survey (DES) Year 1 shape catalogs over 1321 deg of the sky to produce the most significant measurement of cosmic shear in a gal…
Dark Energy Survey Year 1 Results: Galaxy-Galaxy Lensing
J. Prat, C. Sánchez, Y. Fang +112
We present galaxy-galaxy lensing measurements from 1321 sq. deg. of the Dark Energy Survey (DES) Year 1 (Y1) data. The lens sample consists of a selection of 660,000 red galaxies w…
Dark Energy Survey Year 1 Results: Curved-Sky Weak Lensing Mass Map
C. Chang, A. Pujol, B. Mawdsley +117
We construct the largest curved-sky galaxy weak lensing mass map to date from the DES first-year (DES Y1) data. The map, about 10 times larger than previous work, is constructed ov…
Dark Energy Survey Year 1 Results: Weak Lensing Shape Catalogues
J. Zuntz, E. Sheldon, S. Samuroff +104
We present two galaxy shape catalogues from the Dark Energy Survey Year 1 data set, covering 1500 square degrees with a median redshift of . The catalogues cover two main fie…
Dark Energy Survey Year 1 Results: Redshift distributions of the weak lensing source galaxies
B. Hoyle, D. Gruen, G. M. Bernstein +135
We describe the derivation and validation of redshift distribution estimates and their uncertainties for the galaxies used as weak lensing sources in the Dark Energy Survey (DES) Y…
Dark Energy Survey Year 1 Results: Cosmological Constraints from Galaxy Clustering and Weak Lensing
DES Collaboration, T. M. C. Abbott, F. B. Abdalla +197
We present cosmological results from a combined analysis of galaxy clustering and weak gravitational lensing, using 1321 deg of imaging data from the first year of the D…