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We present initial results from multiwavelength observations of a 12\um--flux--limited sample of active galaxies. Our all--sky ($|b|\geq25^\circ$) sample, selected from the IRAS FSC--2, contains 893 galaxies, including a sub--sample of 118 Seyfert galaxies. The latter represents the largest unbiased sample of Seyferts compiled to date.
We summarize the results of Rush, Malkan, \& Spinoglio (1993), in which sample completeness is verified, far--IR colors and luminosity functions are calculated, and comparisons are made with other galaxy samples.
NIR photometry has been obtained for nearly all of the Seyferts and $\sim400$ non--Seyferts. These data, combined with IRAS fluxes and optical data, are used to estimate bolometric luminosities for the sample galaxies. Initial results of this work show that the best IR/optical indicator of bolometric flux is the flux at 12\um. This supports the claim (Rush et al. 1993) that the 12\um\ flux is the most unbiased IR selection--criterion for Seyfert galaxies, and extends it to samples of non--active galaxies.
Pointed ROSAT PSPC spectra have been obtained for 8~Sy~2s and 2~Sy~1s. This is complimented by ROSAT All--Sky Survey (RASS) data for nearly all of the Sy~1s and several dozen Sy~2s and high--luminosity non--Seyferts. Spectral fits to this data, as well as correlations between the soft x--rays and longer--wavelength data, are used to constrain competing models of the source(s) of x--ray emission from Seyfert nuclei.
All of these data will be combined with radio fluxes, UV and optical spectrophotometry, and optical--NIR imaging to form a broad multiwavelength database which will be used to statistically address outstanding questions as to the nature of Seyfert activity.
