M Garcia-Fernandez
A5060486315- Galaxies: Formation, Evolution, Phenomena
- Cosmology and Gravitation Theories
- Stellar, planetary, and galactic studies
- Adaptive optics and wavefront sensing
- Astrophysics and Cosmic Phenomena
- Astronomy and Astrophysical Research
Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas
2018
Universidad Autónoma de Madrid
2017
We present cosmological results from a combined analysis of galaxy clustering and weak gravitational lensing, using 1321 deg$^2$ $griz$ imaging data the first year Dark Energy Survey (DES Y1). combine three two-point functions: (i) cosmic shear correlation function 26 million source galaxies in four redshift bins, (ii) angular autocorrelation 650,000 luminous red five (iii) galaxy-shear cross-correlation positions shears. To demonstrate robustness these results, we use independent pairs...
We define and characterise a sample of 1.3 million galaxies extracted from the first year Dark Energy Survey data, optimised to measure Baryon Acoustic Oscillations in presence significant redshift uncertainties. The is dominated by luminous red located at redshifts $z \gtrsim 0.6$. exact selection using color magnitude cuts that balance need high number densities small photometric uncertainties, corresponding forecasted BAO distance error as figure-of-merit process. typical photo-$z$...
In this paper the effect of weak lensing magnification on galaxy number counts is studied by cross-correlating positions two samples, separated redshift, using Dark Energy Survey Science Verification dataset.This analysis carried out for galaxies that are selected only its photometric redshift.An extensive systematic effects, new methods based simulations performed, including a Monte Carlo sampling selection function survey.