High-redshift AGN provide direct probes of the distant universe when the first generation of galaxies and quasars formed. They are essential for studying the accretion history of supermassive black holes (SMBHs), galaxy formation, and chemical evolution in the first billion years. AGNs also allow study of the evolution of the relationship between black holes in galactic nuclei and their host galaxies. The SMBH mass can be derived from the widths of the broad emission lines   via the Virial theorem, and the stellar mass can be derived either from velocity dispersion estimates of the host galaxy as inferred from the narrow emission lines, or from deep mutiwavelength photometry. GOYA will investigate the evolution of the black-hole-spheroid relation in the most massive galaxies by obtaining line-width black-hole mass estimates and stellar mass estimates for a sample of ~200 AGN at 1<z<5. The SMBH masses will be estimated using Hβ velocity widths, one of the best SMBH mass tracers, while the stellar masses will be estimated using both [OII] y [OIII] line widths and SED-fitting to deep multiwavelength photometry.
galaxy origins and young assembly
last updated on March 2008 by jorG
McLure et al. 2006
GOALS early-type galaxies AGNs
Strategy GOODS-N primeval galaxies star-forming galaxies cosmology Other
© J. Pérez-Gallego & R. Guzmán