1998/01/28 by Gertrud Contardo, G. Contardo, Matthias Steinmetz +2 · 2 citations
Physics and Astronomy · #Astrophysics and Star Formation Studies #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/306350
13 Pages, 9 figures included; Uses AASTeX macros v. 4.0; submitted to ApJ; Also available at http://saguaro.as.arizona.edu/~matthias
arxiv created 1998/01/28 · openalex publication_date 1998/11/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
The photometric evolution of galaxies in a hierarchically clustering universe is investigated. The study is based on high-resolution numerical simulations that include the effects of gasdynamics, shock heating, radiative cooling, and a heuristic star formation scheme. The outcome of the simulations is convolved with photometric models, which enables us to predict the appearance of galaxies in the broadband colors U , B , V , R , I , and K . We demonstrate the effect of the mutual interplay of the hierarchical build-up of galaxies, photometric evolution, k -correction, and intervening absorption on the appearance of forming disk galaxies at redshift 1-3. We also discuss to what extent the numerical resolution of current computer simulations is sufficient to make quantitative predictions on surface density profiles and color gradients.