The obtained results simply reflect the state-of-the-art minimum accuracy that can be claimed for the derived abundances with the mentioned technique. It is obvious, however, that in real nebulae local fluctuations in the physical parameters including condensations of various kinds, not all of them represented in the models considered in the present work, will cause further "inaccuracies" in the abundances derived with the examined method. We conclude by emphasizing that particular attention has to be given to the derivation of the chemical abundances with the "constant , " method for optically thick nebulae.
© European Southern Observatory (ESO) 1998
Online publication: March 30, 1998