Tidal Dwarf Galaxies Bonn 2009: Ghosts from structure formation

Physics Centre Bad Honnef (Germany), May 25-29, 2009

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Talk

Title: Broadband Radio Observations of Local Groups with ASKAP (BROLGA)

Date: Wednesday 27th May

Time: 15:15 - 15:45

Presentation file: talk_Westmeier.pdf

Abstract:

BROLGA is a proposed large survey science project for the Australian SKA Pathfinder (ASKAP). The aim of BROLGA is to carry out sensitive and large-scale observations of nearby galaxy groups and clusters in both the 21-cm line of neutral hydrogen as well as radio continuum emission. The survey will allow us to study the effects of structure formation, galaxy evolution, and feedback processes in group and cluster environments in unprecedented detail. Major scientific goals of BROLGA include (1) the study of tidal interaction and accretion in group and cluster environments, including the search for and study of tidal dwarf galaxies, (2) search for unknown and dark satellites, (3) study of the cosmic web in H i and radio continuum, (4) determination of the structure and dynamics of galaxies in groups and clusters, (5) investigation of mechanisms to induce or suppress star formation in galaxies, and (6) study of magnetic fields in galaxies and their environment. I will introduce the basic observational parameters of BROLGA and then motivate the different science drivers and discuss their impact on our current understanding of structure formation in group and cluster environments.

photos by Julia T. Scho (ForeignLight.com) / Marcel S. Pawlowski