Cosmology from large scale galaxy clustering and galaxy-galaxy lensing with Dark Energy Survey Science Verification data

• Published in: arXiv.org 2016-04
• Main Authors: Kwan, Juliana, Sanchez, Carles, Clampitt, Joseph, Blazek, Jonathan, Crocce, Martin, Jain, Bhuvnesh, Zuntz, Joe, Amara, Adam, Becker, Matthew, Bernstein, Gary, Bonnett, Christopher, DeRose, Joseph, Dodelson, Scott, Eifler, Tim, Gaztanaga, Enrique, Giannantonio, Tommaso, Gruen, Daniel, Hartley, Will, Kacprzak, Tomasz, Kirk, Donnacha, Krause, Elisabeth, MacCrann, Niall, Miquel, Ramon, Park, Youngsoo, Ross, Ashley, Rozo, Eduardo, Rykoff, Eli, Sheldon, Erin, Troxel, Michael A, Wechsler, Risa, Abbott, Tim, Abdalla, Filipe, Allam, Sahar, Benoit-Lévy, Aurélien, Brooks, David, Burke, David, Aurelio Carnero Rosell, Matias Carrasco Kind, Cunha, Carlos, D'Andrea, Chris, da Costa, Luiz, Desai, Shantanu, Diehl, H Thomas, Dietrich, Jörg, Doel, Peter, Evrard, August, Fernandez, Enrique, Finley, David, Flaugher, Brenna, Fosalba, Pablo, Frieman, Josh, Gerdes, David, Gruendl, Robert, Gutierrez, Gaston, Honscheid, Klaus, James, David, Jarvis, Mike, Kuehn, Kyler, Lahav, Ofer, Lima, Marcos, Maia, Marcio, Marshall, Jennifer, Martini, Paul, Melchior, Peter, Mohr, Joe, Nichol, Robert, Nord, Brian, Plazas, Andres, Reil, Kevin, Romer, Kathy, Roodman, Aaron, Sanchez, Eusebio, Scarpine, Vic, Sevilla, Ignacio, Smith, R Chris, Soares-Santos, Marcelle, Sobreira, Flavia, Suchyta, Eric, Swanson, Molly, Tarle, Gregory, Thomas, Daniel, Vinu Vikram, Walker, Alistair
• Format: Article
• Language: English
• Subjects: Clustering; Cosmology; Dark energy; Galaxies; Gravitational lenses; Parameter uncertainty; Photometry; Red shift; Sky surveys (astronomy); Stars & galaxies; Universe
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1604.07871

We present cosmological constraints from the Dark Energy Survey (DES) using a combined analysis of angular clustering of red galaxies and their cross-correlation with weak gravitational lensing of background galaxies. We use a 139 square degree contiguous patch of DES data from the Science Verification (SV) period of observations. Using large scale measurements, we constrain the matter density of the Universe as Omega_m = 0.31 +/- 0.09 and the clustering amplitude of the matter power spectrum as sigma_8 = 0.74 +/- 0.13 after marginalizing over seven nuisance parameters and three additional cosmological parameters. This translates into S_8 = sigma_8(Omega_m/0.3)^{0.16} = 0.74 +/- 0.12 for our fiducial lens redshift bin at 0.35