A MULTIWAVELENGTH CATALOG OF SEYFERT-2 GALAXIES OBSERVED IN THE 2-10 KEV ENERGY-BAND

This paper is a catalog of Seyfert 2 galaxies observed in the 2-10 keV band (339 flux entries). In total, it contains data on 150 objects; f or 76 objects, a positive detection is reported, while for the remaini ng sources, 2 sigma upper limits to the X-ray emission are given. Most of the data have been collected from the literature over a period sta rting from 1974 up to the middle of 1995. Accurate searches of literat ure and databases were performed for all objects, and frequently spect ral fits were reevaluated in order to make the data in the catalog uni form and complete. Some unpublished data are also included. For six ob jects, EXOSAT/ME date have been extracted from the satellite database and analyzed; the 13 fluxes obtained have been added to the present ca talog. The compilation of hard X-ray data has been complemented with d ata in the soft (0.1-3 keV) X-ray band, as well as in ultraviolet (145 0 Angstrom), optical (5500 Angstrom), infrared (3.5, 12, 25, 60, 100 m u m), and radio (6 cm) bands. Fluxes of the [O III] lambda 5007 and H beta emission lines as well as the Balmer decrement H alpha/H beta, an d axial ratio a/b are also given. The present database is meant to be a useful tool for the study of the Seyfert 2 phenomenon in its various aspects.