Spitzer Observations of Cygnus A and Pictor A

Details Spitzer Observations of Cygnus A and Pictor A Spitzer Observations of Cygnus A and Pictor A

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.0803h&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #08.03; Bulletin of the American Astronomical Society, V

Astronomy and Astrophysics

Astronomy

Scientific paper

We present observations of the FRII radio galaxies Cygnus A and Pictor A obtained with the Multiband Imaging Photometer for Spitzer (MIPS) and the Infrared Spectrograph (IRS). The nuclei and radio hot spots in both galaxies are detected with MIPS at 24 microns, but the nuclei have thermal emission components indicative of dust heated by the central active nucleus. The IRS spectrum of Pictor A shows strong silicate emission, while Cygnus A shows strong silicate absorption. We discuss these results in the context of AGN unified schemes.
Support for this work was provided by NASA through contract 1255094 issued by JPL/ California Institute of Technology.

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