Paper:	Nested and Single Bars in Seyfert and Non-Seyfert Galaxies
Volume:	249, The Central Kiloparsec of Starbursts and AGN: the La Palma Connection
Page:	112
Authors:	Laine, Seppo; Shlosman, Isaac; Knapen, Johan H.; Peletier, Reynier F.
Abstract:	We analyze the observed properties of nested and single stellar bar systems in disk galaxies. Our sample consists of 56 Seyfert and 56 non-Seyfert galaxies. We use HST H-band images of the central parts and ground-based images of the outer parts with ellipse fitting to find bars. Our main result is a clear division between the secondary and primary bars in terms of bar length. We show that single bars have different properties from nested bars. We also confirm a statistically significant prevalence of bars among the Seyfert galaxies when compared to non-Seyfert galaxies.

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