Discussions with T.Tsuji and Ch.Helling concerning the polynomial are greatly acknowledged. This work was supported by the Austrian Science Fund (FWF project S7308-AST), the Austrian Academy of Sciences (RL acknowledges a `Doktorandenstipendium'), and the Danish Natural Science Research Council. The ISO Spectral Analysis Package (ISAP) is a joint development by the LWS and SWS Instrument Teams and Data Centers. Contributing institutes are CESR, IAS, IPAC, MPE, RAL and SRON.
© European Southern Observatory (ESO) 2000
Online publication: March 28, 2000