259 citations · 4.2k across the 67 of their papers we have counts for
8 papers · 1 filter
Investigating hot gas in the halos of two massive spirals: Observations and cosmological simulations
Jesper Rasmussen, Jesper Sommer-Larsen, Kristian Pedersen +4
Models of disk galaxy formation commonly predict the existence of an extended reservoir of hot gas surrounding massive spirals at low redshift. As a test of these models, we have o…
Lyman alpha Resonant Scattering in Young Galaxies - Predictions from Cosmological Simulations
P. Laursen, J. Sommer-Larsen
We present results obtained with a 3D, Ly alpha radiative transfer code, applied to a fully cosmological galaxy formation simulation. The developed Monte Carlo code is capable of t…
Broadband UBVRI Photometry of Horizontal-Branch and Metal-Poor Candidates from the HK and Hamburg/ESO Surveys. I
Timothy C. Beers, Chris Flynn, Silvia Rossi +17
We report broadband UBV and/or BVRI CCD photometry for a total of 1857 stars in the thick-disk and halo populations of the Galaxy. The majority of our targets were selected as cand…
Escape of ionizing radiation from star forming regions in young galaxies
Alexei O. Razoumov, Jesper Sommer-Larsen
Using results from high-resolution galaxy formation simulations in a standard Lambda-CDM cosmology and a fully conservative multi-resolution radiative transfer code around point so…
Baryonic Pinching of Galactic Dark Matter Halos
Michael Gustafsson, Malcolm Fairbairn, Jesper Sommer-Larsen
High resolution cosmological N-body simulations of four galaxy-scale dark matter halos are compared to corresponding N-body/hydrodynamical simulations containing dark matter, stars…
The density profiles of hot galactic halo gas
Steen H. Hansen, Jesper Sommer-Larsen
Extended gas haloes around galaxies are a ubiquitous prediction of galaxy formation scenarios. However, the density profiles of this hot halo gas is virtually unknown, although var…
The Tully-Fisher relation and its evolution with redshift in cosmological simulations of disc galaxy formation
Laura Portinari, Jesper Sommer-Larsen
We present predictions on the evolution of the Tully-Fisher (TF) relation with redshift, based on cosmological N-body/hydrodynamical simulations of disc galaxy formation and evolut…
Where are the ``Missing'' Galactic Baryons?
Jesper Sommer-Larsen
Based on 19 high-resolution N-body/gas-dynamical galaxy formation simulations in the LCDM cosmology it is shown, that for a galaxy like the Milky Way, in addition to the baryonic m…