If a paper has a question mark in the title, the answer is usually "no".
This paper has been published online by MNRAS; journal reference for the paper version: MNRAS, 421, 1, 561--569 (March 2012). The definitive version is available at www.blackwell-synergy.com: DOI: 10.1111/j.1365-2966.2011.20334.x. There is also an arXiv e-print.
The links below point to one file containing the complete text, all figures and tables etc.
As are some of my publications this is available in three forms: