Hα Imaging of Nearby Seyfert Host Galaxies

We used narrowband (Δλ = 70 A) interference filters with the CCD imaging camera on the Nickel 1.0 m telescope at Lick Observatory to observe 31 nearby (z 67%) their H ii region emission. Only the most luminous AGNs (log(L_(Hα) /erg s^(−1)) > 41.5) would still be identified as such at z ~ 0.3.