Mathematics – Logic
Scientific paper
Jan 2012
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21912905m&link_type=abstract
American Astronomical Society, AAS Meeting #219, #129.05
Mathematics
Logic
Scientific paper
Observational tools and techniques are used to analyze the output of cosmological numerical simulations to obtain luminosity functions (LFs) of galaxies and galactic building blocks formed in the simulation. The simulations, (a version of Gadget-2, Springel and Hernquist, 2003), use both dark and baryonic matter components, with gasdynamics and star formation to minimize assumptions. The stellar particle output of the simulation at various redshifts is coupled to the Bruzual-Charlot (2003) stellar population synthesis models to create image files in various simulated IR filters for processing by Source Extractor.
The slopes of the luminosity function (LF) over the range of z 4.5 to 11.0 are compared with observational results with good agreement as to the slope "alpha” of the LF curve. Realistic sky background levels are added to the image files to permit better comparisons with observations and to show the effect on the analysis of simulation results.
We are grateful to the ASU Advanced Computing Center (A2C2) for providing computer time.
Morgan Robert J.
Scannapieco Evan
Thacker Robert
Windhorst Rogier A.
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