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Centro de Astrofísica da Universidade do Porto
High-Redshift Radio Galaxies: Probing the Assembly of Massive Galaxies and Clusters

Andrew J. Humphrey
CAUP

Abstract
Powerful radio galaxies at high-redshift typically reside in significantly over-dense regions of the Universe (e.g. proto-clusters) and are hosted by giant elliptical galaxies, or their progenitors. Because of this, they can play an important role in helping us to understand the assembly both of massive galaxies and of galaxy clusters; their association with 100-kpc scale Lyman-alpha emitting nebulae also gives us an alternative perspective from which to understand the nature of high-redshift Lyman-alpha 'blobs'. In this seminar I will describe results from several published or ongoing investigations which use high redshift radio galaxies in this capacity, using observations from VLT, Keck, GTC, the James Clerk Maxwell Telescope, and the Atacama Submillimeter Telescope Experiment.

4 April 2012, 13:30

Centro de Astrofísica
Rua das Estrelas
4150-762 Porto

Institute of Astrophysics and Space Sciences

Institute of Astrophysics and Space Sciences (IA) is a new but long anticipated research infrastructure with a national dimension. It embodies a bold but feasible vision for the development of Astronomy, Astrophysics and Space Sciences in Portugal, taking full advantage and fully realizing the potential created by the national membership of the European Space Agency (ESA) and the European Southern Observatory (ESO). IA resulted from the merging the two most prominent research units in the field in Portugal: the Centre for Astrophysics of the University of Porto (CAUP) and the Center for Astronomy and Astrophysics of the University of Lisbon (CAAUL). It currently hosts more than two-thirds of all active researchers working in Space Sciences in Portugal, and is responsible for an even greater fraction of the national productivity in international ISI journals in the area of Space Sciences. This is the scientific area with the highest relative impact factor (1.65 times above the international average) and the field with the highest average number of citations per article for Portugal.

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