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The bends in the slopes of radial abundance gradients in the disks of spiral galaxies – do they exist?
Authors:Leonid Pilyugin
Institution:(1) Main Astronomical Observatory of National Academy of Sciences of Ukraine, 27 Zabolotnogo str., 03680 Kiev, Ukraine
Abstract:Spiral galaxies with a reported bend in the slope of the oxygen abundance O/HR 23, derived with the traditionally used R23-method, are examined. It is shown that the artificial origin of the reported bends can be naturally explained. Two causes of the false bend in the slope of O/HR 23 are indicated. This revised version was published online in August 2006 with corrections to the Cover Date.
Keywords:galaxies: abundances  galaxies: ISM  galaxies: spiral
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