Simulating the Production of Intracluster Light

Details Simulating the Production of Intracluster Light Simulating the Production of Intracluster Light

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006dda....37.0403r&link_type=abstract

American Astronomical Society, DDA meeting #37, #4.03; Bulletin of the American Astronomical Society, Vol. 38, p.668

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Scientific paper

Using N-body simulations, we have modeled the production and evolution of diffuse, low surface brightness intracluster light (ICL) in galaxy clusters. Using an observational definition of ICL to be luminosity at V-band surface brightness of greater than 26.5 magnitudes per square arcsecond, we have found that the fraction of cluster luminosity contained in ICL generally increases as clusters evolve, although there are large deviations from this trend over short timescales, including sustained periods of decreasing ICL luminosity. Most ICL luminosity increases come in short, discrete events which are highly correlated with group accretion events within the cluster. Additionally, the morphological structure of the ICL changes with time, evolving from a complex of filaments and small-scale, relatively high surface brightness features early in a cluster's history, to a more diffuse and amorphous cluster-scale ICL envelope at later times.

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