| Issue |
A&A
Volume 397, Number 1, January I 2003
|
|
|---|---|---|
| Page(s) | 109 - 114 | |
| Section | Extragalactic astronomy | |
| DOI | https://doi.org/10.1051/0004-6361:20021505 | |
| Published online | 11 December 2002 | |
The bends in the slopes of radial abundance gradients in the disks of spiral galaxies – Do they exist?
Main Astronomical Observatory of National Academy of Sciences of Ukraine, 27 Zabolotnogo str., 03680 Kiev, Ukraine
Corresponding author: pilyugin@mao.kiev.ua
Received:
14
March
2002
Accepted:
1
October
2002
Spiral galaxies with a reported bend in the slope of gradient in the oxygen
abundances (O/H)
, derived with traditionally used R23-method,
were examined. It is shown that the artificial origin of the reported bends can
be naturally explained. Two situations that result in a false bend in the slope
of (O/H) 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.
Key words: galaxies: abundances / galaxies: ISM / galaxies: spiral
© ESO, 2003
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