Ortwin Gerhard

TL;DR: In this paper, the authors study the properties of diffuse light in galaxy clusters forming in a large hydrodynamical cosmological simulation of the Λ cold dark matter cosmology and find that more massive simulated clusters have a larger fraction of stars in the diffuse light than the less massive ones.

TL;DR: In this article, the authors derived new constraints on the mass, rotation, orbit structure and statistical parallax of the Galactic old nuclear star cluster (NSC) and the mass of the supermassive black hole.

TL;DR: In this article, the authors used simple population synthesis models, on the assumption that these sources are regions of star formation, to detect 9 Ly alpha emitters at z = 3.13, obtained with the FORS spectrograph at Unit 1 of the ESO Very Large Telescope.

TL;DR: In this article, the authors compare the potential profiles of the elliptical galaxies NGC 4486 (M87) and NGC 1399 (the central galaxy in the Fornax cluster) derived from X-ray and optical data.

TL;DR: In this article, the authors used simple population synthesis models to identify nine Lyα emitters at z = 3.13 with fluxes between 2 × 10-17 and 2 ×10-16 ergs cm-2 s-1 obtained with the FORS spectrograph at Unit 1 of the ESO Very Large Telescope (VLT UT1).