S317p.105 — Isolated elliptical galaxies, their globular cluster systems, and LCDM

Date & Time

Aug 4th at 6:00 PM until 6:00 PM




Rating ( votes)

Author(s): Richard Lane2, Ricardo Salinas1, Tom Richtler2

Institution(s): 1. Michigan State University, 2. Universidad de Concepcion

The globular cluster (GC) systems of isolated elliptical galaxies (IEs) have only recently begun to be studied in detail, and may exhibit morphological connections to the evolutionary histories of their hosts. In fact evidence is mounting that the GC systems of massive galaxies in clusters are largely assembled by infall/accretion processes. IEs are their counterparts in low density environments and a comparison of their GC systems should directly highlight environmental effects. Are GCs the answer to unlocking the evolution of isolated galaxies? In addition, the GC systems of reasonably nearby galaxies are detectable out to large radii, making them useful tracers for producing dynamical models of their hosts. How much dark matter is contained within IEs? Very little it seems, at least in some cases. GCs are, therefore, also one of the most important tools we have for testing Lambda CDM models observationally.