NOAO >   Observing Info >   Approved Programs >   2003B-0338

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Proposal Information for 2003B-0338


PI: Michael A. Strauss, Princeton University, strauss@astro.princeton.edu
Address: Astrophysics Department, Peyton Hall, Princeton, NJ 08544, USA

CoI: Nadia L. Zakamska, Princeton University
CoI: Gary D. Schmidt, Univerity of Arizona
CoI: Julian H. Krolik, Johns Hopkins University
CoI: Matthew J. Collinge, Princeton University
CoI: Patrick B. Hall, Princeton University
CoI: Gordon T. Richards, Princeton University

Title: Spectropolarimetry of Type II Quasar Candidates selected from the Sloan Digital Sky Survey

Abstract: Type II quasars are luminous AGN whose central engines and broad- line regions are obscured by intervening material; only a few candidates have been described in the literature. We have selected a large number of candidate type II quasars from the spectroscopic data of the SDSS. They are characterized by high-equivalent width, high-ionization narrow emission lines with line ratios inconsistent with those of HII regions or narrow-line Seyfert 1 galaxies. We estimate their intrinsic luminosities to be as bright as -26<M_B<-23. We here propose to perform spectropolarimetry of the most luminous objects in the sample as part of a comprehensive multi-wavelength study of type II quasars. As in spectropolarimetry of Seyfert 2 galaxies, these observations would allow us to detect the hidden central engine and the broad-line region in scattered light, extending the unification model of active galactic nuclei to high luminosities.


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