Astron. Astrophys. 361, 704-718 (2000)

Acknowledgements

We thank Lic. Päivi Harjunpää for discussions concerning the `LTE' method applied here. We are grateful to Dr. Mark Rawlings, Dr. Malcolm Walmsley, Dr. Paola Caselli, and the referee, Dr. Glenn Ciolek, for very helpful comments on the manuscript. The work by S.K., J.H. and A.H. was supported by the Academy of Finland through grant No. 1011055. The Swedish-ESO Submillimetre Telescope is operated jointly by ESO and the Swedish National Facility for Radio Astronomy, Onsala Space Observatory at Chalmers University of Technology.

© European Southern Observatory (ESO) 2000

Online publication: October 2, 2000
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