AAS 204th Meeting, June 2004
Session 41 Spitzer Space Telescope
Topical Related Poster, Tuesday, June 1, 2004, 10:00am-7:00pm, Ballroom

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[41.26] Far-Infrared Observations of Low-Redshift QSOs with the Spitzer Space Telescope

P.S. Smith, F.J. Low (Steward Observatory), D.C. Hines (Space Science Institute)

Observations by the Multiband Imaging Photometer for Spitzer (MIPS) of low-redshift QSOs obtained during the first few months of science operations of the Spitzer Space Telescope are presented. The far-infrared QSO survey consists of 114 objects with z < 0.6 and is roughly equally split between Palomar-Green QSOs (PG) and QSOs discovered by the Two-Micron All Sky Survey (2MASS). A primary goal of this survey is to compare the properties between classical optically-selected QSOs with recently discovered, presumably reddened, near-IR-selected objects at wavelengths where the effects of our orientation to the line of sight to the AGN are minimized. The results of this survey will have important consequences for current orientation-based models that attempt to unify high-luminosity AGN of disparate optical types. This work is an extension of the discovery by the Infrared Astronomical Satellite nearly two decades ago of QSOs hidden behind dust in their immediate environment. All objects are observed by MIPS using photometry mode in all three wavelength bands (24, 70, and 160 microns). We summarize the far-infrared photometry of those objects observed thus far by Spitzer.

This research is supported by NASA through JPL grant 1256424 administered by the Spitzer Science Center.

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