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Astron. Astrophys. 359, 586-596 (2000) AcknowledgementsWe are grateful to Dr. F. Kerschbaum for generously providing estimates of some of the input parameters to the CO modelling. We would also like to thank Dr. C. Kahane for valuable comments. Financial support from the Swedish Natural Science Research Council (NFR) is gratefully acknowledged.
© European Southern Observatory (ESO) 2000 Online publication: July 7, 2000 ![]() |