Spitzer Space Telescope - Guaranteed Time Observer Proposal #50040


Spectral Energy Distributions of the High-Redshift 4C Sources: Testing
Unification

Principal Investigator: Giovanni Fazio
           Institution: Harvard-Smithsonian Astrophysical Observatory

     Technical Contact: Steven Willner, Center for Astrophysics

Co-Investigators: 
Martin Haas, Astronomisches Institut Universitat                      
Belinda Wilkes, Harvard-Smithsonian Center for Astrophysics           
Jiasheng Huang, Harvard-Smithsonian Center for Astrophysics           
Mark Lacy, Spitzer Science Center                                     
Daniel Stern, Jet Propulsion Lab                                      
Gillian Wilson, UC Riverside                                          
Matthew Ashby, Harvard-Smithsonian Center for Astrophysics            

Science Category: AGN/quasars/radio galaxies 
 Observing Modes: IracMap IrsPeakupImage 
  Hours Approved: 4.9 

Abstract:
We propose IRAC and IRS peakup photometry of high-redshift (z>1.5) radio
galaxies and quasars. This is a followup to previous proposals in cycle 4. It
will add IRAC and 16-micron data for galaxies having only MIPS observations.
The galaxy spectral energy distributions will enable us to determine the stellar
luminosity and mass and will help separate AGN from starburst emission.