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Event Number 4547

  Thursday, May 18th, 2017

Astronomy Colloquium
Deep spectroscopy in nearby galaxy clusters: the cases of A85 and Hercules clusters
Time: 3:30 pm
Place: 4421 Sterling Hall, Coffee and cookies 3:30 PM, Talk starts at 3:45 PM
Speaker: Alfonso Aguerri, Titular OPI en Instituto de Astrofísica de Canarias - ?Instituto de Astrofísica de Canarias
Abstract: Deep spectroscopical studies in nearby galaxy clusters are not frequent in the literature.
We have started a project in order to obtain deep spectroscopic observations of galaxies in an statistically
significant sample of nearby galaxy clusters (z < 0.04). This study will provide us spectroscopic properties
of galaxies in clusters down to M*+6. The kinematics, stellar population and orbital properties of several
thousands of dwarf galaxies in clusters will be analyzed in this survey. In this talk I will show the first
results on two different nearby clusters: A85 and the Hercules cluster (A2151). These two clusters are massive
but in different dynamical state. I will show the results obtained about the spectroscopic luminosity functions,
the orbital analysis of their galaxies and the properties of the different types of galaxies spectroscopically selected.
Host: Elena Donghia
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