Comparison between the radii of bars in the i band and the radii of the central zone of avoidance of the 160 μm (black dots) and continuum-subtracted Hα (red dots) images. The black and red dashed lines represent the bisector regression to the i band vs. 160 μm and i band vs. Hα data, respectively. The green dashed line is the linear fit to the i band versus 160 μm radii measured using ellipse in IRAF for 75% of the sample. All radii are normalized to the optical diameter of the galaxy taken from Cortese et al. (2012). A comparison between the visual and automatic optical and 160 μm radii is available in Appendix A.
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