Computer Science
Scientific paper
Jul 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001hst..prop.9057h&link_type=abstract
HST Proposal ID #9057
Computer Science
Hst Proposal Id #9057 Agn/Quasars
Scientific paper
We propose a WFPC2 snapshot survey of red QSOs discovered in The Two Micron All Sky Survey {2MASS} to investigate the detailed properties of their host galaxies. This large, possibly dominant, population of QSOs in the local universe has been previously overlooked because reddening by {intrinsic} obscuration along our line of sight causes their colors to be too red for identification by traditional "UV- excess" techniques. Their near-IR colors are similar to PG- type {UV-excess} QSOs, but it is far from certain whether they are indeed from the same parent population or represent a completely new class of QSO. Hints from our polarimetry survey suggest that they may simply be highly inclined PG-type QSOs. Alternatively, they may represent objects with high dust cover from an interaction similar to that seen in the Ultra- and Hyperluminous Infrared Galaxies {ULIRGs & HIGs}. Regardless, the strong attenuation of the nuclear UV/optical light affords us with the unique opportunity to investigate the optical properties of QSO host galaxies without the pitfalls encountered while observing QSOs whose blinding nuclear emission often completely overwhelms the host galaxy, even in HST images. The snapshot images will form a comprehensive census, and strong legacy database, of the 2MASS QSO host galaxies that can be compared directly with previous HST imaging studies of PG-type QSOs, ULIRGs and HIGs.
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