We detect a highly polarized continuum and broad emission line spectrum that is typical of QSOs in the hyperluminous infrared galaxy IRAS F15307+3252. The high nonvariable polarization (p = 16%-20%) and the unpolarized narrow emission lines imply that the polarized light is produced by scattering within or near the narrow-line region. Viewed along the vantage point of the scatterers, F15307+3252 would appear to be indistinguishable from luminous optically selected QSOs.
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Hines et al. (1995) studied this question.
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