Author:
Roth M.,Herrero A.,Mendez R. H.,Kudritzki R. P.,Butler K.,Groth H. G.
Abstract
We present spectral descriptions based on high-resolution spectrograms of central stars of planetary nebulae, obtained with the ESO 3,6-m telescope + CASPEC (Cassegrain Echelle Spectrograph). We make preliminary determinations of stellar photospheric metal abundances, using non-LTE model atmospheres and non-LTE line formation calculations.
Publisher
Cambridge University Press (CUP)