Author:
Bremer M.,Grewing M.,Barnstedt J.,Kappelmann N.
Abstract
During the ORFEUS-SPAS II mission (November 19th - December 7th 1996, aboard the space shuttleColumbia), the elliptical planetary nebulae NGC 6543 and NGC 6826 have been studied with the Echelle spectrometer. The instrumental wavelength range and resolution are 900Å - 1400Å and 0.1Å, respectively (R= 10000), which provides detailed information about emission and absorption lines which are inaccessible for ground-based observations. We present a new analysis of the absorption lines imposed on the spectra of the central stars.
Publisher
Cambridge University Press (CUP)