Photometric Inference of the Corotation Radii of Ten Barred Galaxies.

Authors :: Aguerri, J.A.L.
Beckman, J.E.
Prieto, M.
Source :: Astrophysics & Space Science; Mar2001, Vol. 276 Issue 2-4, p691-698, 8p
Publication Year :: 2001
Abstract: We have used photometric images of ten barred galaxies in the B and I bands to infer the geometrical and dynamical parameters of their bars: Their length, ( R <subscript>bar</subscript>), their strengths, ( S <subscript>b</subscript>), and their corotation radii, ( R <subscript>CR</subscript>).These parameters have been obtained studying azimuthal profiles from the B and I band images of the galaxies. We find that R <subscript>CR</subscript> is in all cases slightly larger than R <subscript>bar</subscript>, with mean values close to 1.2 R <subscript>bar</subscript>. We have also found a dependence of the ratio R <subscript>CR</subscript>/ R <subscript>bar</subscript> on S <subscript>bar</subscript>. [ABSTRACT FROM AUTHOR]