Astron. Astrophys. 322, 256-265 (1997)

Acknowledgements

The author gratefully acknowledges the continuous support of the NLTE calculations by K. Werner, T. Rauch, and S. Dreizler. I am indebted to U. Heber for providing me with his grid of LTE models and for useful suggestions, and to S. Moehler and M. Lemke for remarks on the manuscript. This work was supported by the DARA under grant 50 OR 9309.

© European Southern Observatory (ESO) 1997

Online publication: June 30, 1998
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