Computer Science
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50420d&link_type=abstract
Spitzer Proposal ID #50420
Computer Science
Scientific paper
Recently, Spitzer has been investigating the infrared properties of classical, powerful radio galaxies, and those of intermediate size radio sources. In this proposal we wish to extend these studies, and determine the infrared properties of the host galaxies of GPS sources, an enigmatic class of compact radio source that represents the youngest stage of radio source evolution. The AGN activity in GPS galaxies is still so recent (radio sources of typically 100-1000 years - as shown by VLBI monitoring), that there has been very little time for the AGN to influence the host galaxies, and they should be in the suggested transition phase between dominating starburst and AGN activity in major merger events. We will establish the dominant heating mechanisms for these unique objects, and determine the evolution of the dust properties as function of AGN life cycle. We propose to observe a sample of 15 young radio galaxies, matching in radio power and redshift with the extended radio galaxies, at 24 and 70 micron using MIPS.
Barthel Peter
Brandl Bernhard
Dallacasa Daniele
de Vries Nathan
Fanti Carla
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