A Hubble Space Telescope Survey of Extended [O iii ] λ5007 Emission in a Far‐Infrared Selected Sample of Seyfert Galaxies: Observations

We present a Hubble Space Telescope (HST) survey of extended [OIII] emissionfor a sample of 60 Seyfert galaxies (22 Seyfert 1's and 38 Seyfert 2's),selected based on their far infrared properties. The observations for 42 ofthese galaxies were done in a snapshot survey with WFPC2. The remaining 18 wereobtained from the HST archive, most of which were observed with the sameconfiguration. These observations cover 68% of the objects in the sampledefined by Kinney et al. (2000), and create a valuable dataset for the study ofthe Narrow Line Region (NLR) properties of Seyfert galaxies. In this paper, wepresent the details of the observations, reductions, and measurements. We alsodiscuss the extended structure of individual sources, and the relation of thisemission to the radio and host galaxy morphology. We also address howrepresentative the subsample of [O III]-imaged galaxies is of the entiresample, and possible selection effects that may affect this comparison of theproperties of Seyfert 1 and Seyfert 2 galaxies.Comment: 27 pages including 14 figures, to appear in ApJS October 200