Diffuse light in clusters of galaxies

Details Diffuse light in clusters of galaxies Diffuse light in clusters of galaxies

Dec 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004bdmh.confe..26a&link_type=abstract

"Proceedings of "Baryons in Dark Matter Halos". Novigrad, Croatia, 5-9 Oct 2004. Editors: R. Dettmar, U. Klein, P. Salucci. Publ

Computer Science

1

Scientific paper

In galaxy clusters a diffuse intracluster stellar component has been detected from deep imaging and observations of individual intracluster stars, and recently some progress has been made in the study of intracluster starlight on several fronts. Individual intracluster stars have been discovered in the Virgo cluster, and thank to innovative spectroscopic techniques planetary nebulae were detected in the Coma cluster. These intracluster stars give the promise of studying in detail the kinematics, metallicity and age of the intracluster stellar population in nearby galaxy clusters. Furthermore, intracluster light (ICL) is also poten- tially of great interest for studies of galaxy and galaxy cluster evolution. The dynamical evolution of cluster galaxies involves complex and imperfectly understood processes such as galactic en- counters, cluster accretion, and tidal stripping. The properties of the ICL may also be sensitive to the distribution of dark matter in cluster galaxies, as simulations have shown that the structure of dark matter halos in galaxies plays a central role in the formation and evolution of tidal debris. Current investigations aim at understanding about the origin of this diffuse stellar component, and the details of the cluster formation and evolution.

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