| Issue |
A&A
Volume 367, Number 3, March I 2001
|
|
|---|---|---|
| Page(s) | 949 - 958 | |
| Section | The Sun | |
| DOI | https://doi.org/10.1051/0004-6361:20000435 | |
| Published online | 15 March 2001 | |
The ISO-SWS spectrum of planetary nebula NGC 7027 *
1
SRON Laboratory for Space Research, PO Box 800, 9700 AV Groningen, The Netherlands
2
Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
Corresponding author: J. Bernard Salas, J.Bernard@sron.rug.nl
Received:
19
July
2000
Accepted:
27
November
2000
We present the infrared spectrum of the planetary nebula NGC 7027
observed with the Short Wavelength Spectrometer (SWS), on board the
Infrared Space Observatory (ISO). These
data allow us to derive the electron density and, together
with the IUE and optical spectra, the electron temperature
for several ions. The nebular composition has been determined, the
evolutionary status of the central star is discussed and the
element depletion in the nebula is given. We conclude that the
progenitor was a C-rich star with a mass between 3 and 4 
.
Key words: ISM: abundances / planetary nebulae: individual: NGC 7027 / infrared: ISM: lines and bands
© ESO, 2001
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