|Current Workshop | Overview||Back | Home | Search ||
Nuclear Clusters in Galaxies, and the Role of the Environment
Description and aim
Dense nuclear clusters are found at the centres of the majority of low to intermediate luminosity galaxies, becoming rarer in more massive galaxies. In the more massive galaxies, instead, super-massive black holes become prevalent. In some galaxies, both a black hole and a nuclear cluster is present, with a wide range of mass ratios. Understanding the transition from low mass to high mass systems provides an important clue to understanding how both types of central massive objects (CMOs) form and evolve. The mass of CMOs correlates with properties of their host galaxies.
Early work showed that CMOs share some common scaling relations but more recent work has shown that nuclear clusters and supermassive black holes in fact follow different scaling relations. Regardless, CMO scaling relations imply that there is some causal connection between the growth of the CMOs and that of their hosts. This connection is usually interpreted as evidence that feedback has played an important role in regulating CMOs and their hosts. Understanding nuclear cluster formation and growth therefore may help unlock the mystery of how supermassive black holes grow.
The goal of this meeting is to allow observers and theorists to sift through the observational data in order to understand how nuclear clusters form and to put forward new predictions for upcoming data on nuclear clusters in different environments. At the meeting, the newest models can be compared with results from a number of large new cluster surveys in Virgo and Fornax that are being assembled right now, and conclusions can be drawn how nuclear clusters can be used to better understand the formation of galaxies themselves.