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The hidden broad-line regions (BLRs) in Seyfert 2 galaxies, which displaybroad emission lines (BELs) in their polarized spectra, are a key piece ofevidence in support of the unified model for active galactic nuclei (AGNs).However, the detailed kinematics and geometry of hidden BLRs are still notfully understood. The virial factor obtained from reverberation mapping of type1 AGNs may be a useful diagnostic of the nature of hidden BLRs in type 2objects. In order to understand the hidden BLRs, we compile six type 2 objectsfrom the literature with polarized BELs and dynamical measurements of blackhole masses. All of them contain pseudobulges. We estimate their virialfactors, and find the average value is 0.60 and the standard deviation is 0.69,which agree well with the value of type 1 AGNs with pseudobulges. This studydemonstrates that (1) the geometry and kinematics of BLR are similar in type 1and type 2 AGNs of the same bulge type (pseudobulges), and (2) the small valuesof virial factors in Seyfert 2 galaxies suggest that, similar to type 1 AGNs,BLRs tend to be very thick disks in type 2 objects.

Hidden Broad-line Regions in Seyfert 2 Galaxies: from the spectropolarimetric perspective