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We present results from high signal-to-noise optical spectropolarimetricobservations of the Seyfert 1 galaxies NGC783 and Mrk509 in the 3500-7000 Arange. We find complex structure in the polarized emission for both objects. Inparticular, Position Angle (PA) changes across the Balmer lines show adistinctive 'M'-shaped profile that had not been observed in this detailbefore, but could represent a common trait in Seyfert 1 galaxies. In fact,while this shape is observed in all Balmer lines in NGC3783, Mrk509 transitionsinto a 'M'-shaped PA profile for higher transitions lines. We have modeled theobserved profiles using the STOKES radiative transfer code and assuming thatthe scattering region is co-spatial with the BLR and outflowing. The resultsgive compelling new evidence for the presence of nuclear winds in these twoSeyfert 1 galaxies.

Spectropolarimetry of NGC3783 and Mrk509: Evidence for powerful nuclear winds in Seyfert 1 Galaxies