Home   >   Research   >   Seminars and meetings   >   Internal seminars : The diffuse intra-cluster component in the Virgo cluster

The diffuse intra-cluster component in the Virgo cluster

February 28, 2020
From 10:30 until 12:00

Alessia Longobardi


Structure evolution is now understood to be the products of a Hubble time's worth of merging, accretion, and interaction with the surrounding environment. This history is hidden, however, being quickly mixed into a smooth and apparently featureless distribution of baryons, or by being at surface brightness much fainter than the sky. The synergy between bright tracers, like Globular Clusters (GCs) and Planetary Nebulae (PNs), and multi-frequency data can solve both of these observational challenges allowing us to investigate the region in space where galaxy halos blend into the intra-cluster component (ICC), a direct product of the interactions within a cluster. The focus of this talk will be on the nearby Virgo cluster where GCs and PNs have shown that the galaxy halos and the ICC are dynamically distinct with different parent stellar populations and progenitors. Finally, I will talk about a recent study that used the wealth of multi-frequency data to detect for the first time diffuse intra-cluster dust in the intra-cluster medium of Virgo over a scale of 0.4 virial radii.

Search & Find
Apr 25 2018

Astronomers worldwide are eagerly awaiting for April 25 2018. This is the date the European Space...

Mar 5 2020

    L’observatoire astronomique de Strasbourg accueille 83 personnes, dont 56 fonctionnaires...

Feb 11 2020

A study by the University of Bonn simulates a universe in which Newton's laws are only valid to a...

Jan 15 2020

Bait et al. report the discovery using the Giant Metrewave Radio Telescope of an extremely large...

Dec 6 2019

Globular clusters are dense spheroidal collections of ~a million very old stars that orbit around a...