Aims. We determine the chemical abundances and other parameters of the nebula NGC 6826 and its central star.Methods. We present new ISO spectra and combine them with archival IUE and optical spectra from the literature to get a complete, extinction-corrected, spectrum. The chemical composition of the nebula is then calculated in two ways, first by directly calculating and adding individual ion abundances, and second by building a model nebula that will reproduce the observed spectrum.Results. The results of these two methods are compared. In addition, we discuss the star exciting the nebula.</p
The mid-infrared spectrum of the rather circular planetary nebula NGC2792 taken with the Spitzer Spa...
Accurate chemical abundances for the following planetary nebulae (PNe); NGC 6537, He 2-111, NGC 6302...
The spectra of the planetary nebula NGC2392 is reanalysed using spectral measurements made in the mi...
Aims. We determine the chemical abundances and other parameters of the nebula NGC 6826 and its centr...
Aims. We determine the chemical abundances and other parameters of the nebula NGC 6826 and its centr...
ISO and IUE spectra of the round-shaped planetary nebula NGC6886 are combined with spectra in the vi...
The ISO and IUE spectra of the elliptical nebulae NGC2022, NGC6818 and IC4191 are presented. These s...
Spectrophotometric observations of emission-line intensities over the spectral range 1400 to 1700 A ...
The spectra of the planetary nebula NGC6210 is reanalysed using spectral measurements made in the mi...
Spectrophotometric observations of emission line intensities were made in seven positions in the pla...
ISO and IUE spectra of the round-shaped planetary nebula NGC6886 are combined with spectra in the vi...
ISO spectra of the bipolar planetary nebula Mz3 are used to determine the element abundances in the ...
The spectra of the planetary nebula M1-42 is reanalysed using spectral measurements made in the mid-...
The mid-infrared spectrum of the rather circular planetary nebula NGC2792 taken with the Spitzer Spa...
Accurate chemical abundances for the following planetary nebulae (PNe); NGC 6537, He 2-111, NGC 6302...
The spectra of the planetary nebula NGC2392 is reanalysed using spectral measurements made in the mi...
Aims. We determine the chemical abundances and other parameters of the nebula NGC 6826 and its centr...
Aims. We determine the chemical abundances and other parameters of the nebula NGC 6826 and its centr...
ISO and IUE spectra of the round-shaped planetary nebula NGC6886 are combined with spectra in the vi...
The ISO and IUE spectra of the elliptical nebulae NGC2022, NGC6818 and IC4191 are presented. These s...
Spectrophotometric observations of emission-line intensities over the spectral range 1400 to 1700 A ...
The spectra of the planetary nebula NGC6210 is reanalysed using spectral measurements made in the mi...
Spectrophotometric observations of emission line intensities were made in seven positions in the pla...
ISO and IUE spectra of the round-shaped planetary nebula NGC6886 are combined with spectra in the vi...
ISO spectra of the bipolar planetary nebula Mz3 are used to determine the element abundances in the ...
The spectra of the planetary nebula M1-42 is reanalysed using spectral measurements made in the mid-...
The mid-infrared spectrum of the rather circular planetary nebula NGC2792 taken with the Spitzer Spa...
Accurate chemical abundances for the following planetary nebulae (PNe); NGC 6537, He 2-111, NGC 6302...
The spectra of the planetary nebula NGC2392 is reanalysed using spectral measurements made in the mi...