P. Fosalba

Eight ultra-faint galaxy candidates discovered in year two of the Dark Energy Survey

We report the discovery of eight new ultra-faint dwarf galaxy candidates in the second year of optical imaging data from the Dark Energy Survey (DES). Six of these candidates are detected at high confidence, while two lower-confidence candidates are identified in regions of non-uniform survey coverage. The new stellar systems are found by three independent automated search techniques and are identified as overdensities of stars, consistent with the isochrone and luminosity function of an old and metal-poor simple stellar population. The new systems are faint (MV > −4.7

Simulating the Universe with MICE: the abundance of massive clusters

mathrm{mag}

Detection of the Integrated Sachs-Wolfe and Sunyaev-Zeldovich Effects from the Cosmic Microwave Background-Galaxy Correlation

) and span a range of physical sizes (17

MEASURING BARYON ACOUSTIC OSCILLATIONS ALONG THE LINE OF SIGHT WITH PHOTOMETRIC REDSHIFTS: THE PAU SURVEY

mathrm{pc}

On the radiative efficiencies, Eddington ratios, and duty cycles of luminous high-redshift quasars

< r(1/2) < 181

Cross-correlation of Wilkinson Microwave Anisotropy Probe third-year data and the Sloan Digital Sky Survey DR4 galaxy survey: new evidence for dark energy

mathrm{pc}

Measurement of the gravitational potential evolution from the cross-correlation between WMAP and the APM Galaxy Survey

) and heliocentric distances (25 kpc < D(⊙) < 214 kpc). All of the new systems have central surface brightnesses consistent with known ultra-faint dwarf galaxies (μ ≳ 27.5

The onion universe: all sky lightcone simulations in spherical shells

mathrm{mag}

The MICE Grand Challenge Lightcone Simulation I: Dark matter clustering

mathrm{arcsec}