Evolution of Compact Quasars and Radio Galaxies

Details Evolution of Compact Quasars and Radio Galaxies Evolution of Compact Quasars and Radio Galaxies

Mar 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop50683o&link_type=abstract

Spitzer Proposal ID #50683

Computer Science

Scientific paper

Compact (CSS/GPS) quasars and radio galaxies have small sizes (<20 kpc) and young expansion ages (<10^6 yr). They may be the progenitors of the larger (100 kpc), older 'classical' (FRII) radio galaxies and quasars. We propose to take IRS spectra of a large sample of compact radio sources with sizes of 0.03-20 kpc at redshift z=0.4-1.0 to study AGN feedback and galaxy evolution. We will study the evolution of the star formation rate with radio source size by measuring PAH feature strengths with IRS and far-IR emission with MIPS. The radio jet may have a large impact on the host galaxy interstellar medium, via shock heating, shock-induced star formation, and by driving outflows. We will search for jet shock-heated molecular hydrogen and ionized gas, and study the dependence of silicate absorption depth on radio jet size. Together with our previous Spitzer observations of FR I and FR II radio galaxies, which have sizes of 20kpc-1Mpc, we will have a complete view of radio galaxies and quasars and their hosts over a large range of sizes, luminosities, and ages.

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