This is best viewed in the Acrobat 4.0 Reader or above, available to download for free from : http://www.adobe.com/products/acrobat/readstep.html
A gnu-zipped postscript file of the paper is also available by clicking this link: mnr_6000.ps.gz . This can be viewed in Ghostview. If you want to download the .ps.gz file without viewing first then use Shift-left-click.
Please note the following terms and conditions regarding this PDF (these conditions also apply to the postscript version).
1. Copyright in this article rests with Royal Astronomical Society,
which grants back to the Contributing Authors the right to share this PDF
file with colleagues for
2. This PDF file may be posted on the Contributing Author's own Website
for personal or professional use, or on the Contributing Author's internal
university or corporate
networks/intranet, or on a secure external Website at the Contributing Author's institution.
3. This PDF file may not be offered for commercial sale or for any systematic
external distribution by a third party (e.g. a listserve or database connected
to a public access
4. This is an electronic version of an article published in Monthly
Notices of the Royal Astronomical Society: complete citation information
for the final version of the paper,
as published in the print edition of Monthly Notices of the Royal Astronomical Society, is available on the Blackwell Science Synergy online delivery service, accessible via
the journal's Website at: http://www.blacksci.co.uk/MNR'.
5. The Contributing Authors may, without charge, photocopy or transmit
online or download, print out and distribute to co-authors and colleagues
the PDF file of the
published article, in whole or in part, for the Contributing Author's personal or professional use, for the advancement of scholarly or scientific research or study.