Astron. Astrophys. 361, 429-443 (2000)

Acknowledgements

We acknowledge useful discussions with M. Arnaud, D. Neumann and J. Bartlett, and we are grateful to V. Pislar for much appreciated help in ROSAT PSPC data reduction. We also thank our referee for his/her constructive remarks and suggestions.

© European Southern Observatory (ESO) 2000

Online publication: October 2, 2000
helpdesk.link@springer.de