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Astron. Astrophys. 363, 917-925 (2000) AcknowledgementsIt is a pleasure for us to thank Rolf Chini, Kalevi Mattila and Viktor Tóth for stimulating discussions, and the referee James Lequeux for his very helpful comments improving this paper. The development and operation of ISOPHOT and the Postoperation Phase are supported by funds of Deutsches Zentrum für Luft- und Raumfahrt (DLR, formerly DARA).
© European Southern Observatory (ESO) 2000 Online publication: December 5, 2000 ![]() |