| Description |
Understanding how massive black holes, galaxies and clusters ofgalaxies jointly emerged from inhomogeneities in the primeval Universeis one of the most compelling objectives of modern observationalastrophysics. Here we propose to use SPIRE.s excellent sensitivity andsurvey speed to obtain for the first time a significant sample ofproto-clusters over the key redshift range 2 < z < 4. This would bedone through imaging of fields centered at AGN selected to harbour themost massive black hole. The resulting data set will allow us toaddress key questions, including: (i) Are the most massive black holesat z > 2 located in the largest and most massive proto-clusters? (ii)What are the masses, sizes, total star formation rates and velocitydispersions of the protoclusters? (iii) What are the masses, ages andstar formation rates of the individual proto-cluster galaxies? Do wesee a spatial segregation of galaxies with different masses or starformation rates? (iv) Do the properties of the proto-clusters andtheir galaxies evolve with redshift? (v) Are the galaxies in theseproto-clusters older, larger and more massive then field galaxies? |
