The bends in the slopes of radial abundance gradients in the disks of spiral galaxies -- do they exist?
arXiv:astro-ph/0210385 · doi:10.1023/A:1024013004321
Abstract
Spiral galaxies with a reported bend in the slope of gradient in the oxygen abundances (O/H)_R23, derived with traditionally used R23 - method, were examined. It is shown that the artificial origin of the reported bends can be naturally explained. Two reasons that result in a false bend in the slope of (O/H)_R23 gradient are indicated. It is concluded that at the present time there is no example of a galaxy with an undisputable established bend in the slope of the oxygen abundance gradient.
6 pages, 3 figures, accepted for publication in Astronomy and Astrophysics