| Issue |
A&A
Volume 409, Number 2, October II 2003
|
|
|---|---|---|
| Page(s) | 599 - 609 | |
| Section | Interstellar and circumstellar matter | |
| DOI | https://doi.org/10.1051/0004-6361:20031122 | |
| Published online | 17 November 2003 | |
Abundances of planetary nebulae NGC 40 and NGC 6153*
1
Kapteyn Astronomical Institute, PO Box 800, 9700 AV Groningen, The Netherlands
2
SRON Laboratory for Space Research, PO Box 800, 9700 AV Groningen, The Netherlands
3
Laboratory for Astronomy and Solar Physics, Code 681, Goddard Space Flight Center, MD, USA
Corresponding author: S. R. Pottasch, pottasch@astro.rug.nl
Received:
20
May
2003
Accepted:
24
July
2003
The ISO and IUE spectra of the elliptical nebulae NGC 40 and NGC 6153 are presented. These spectra are combined with the spectra in the visual wavelength region to obtain a complete, extinction corrected, spectrum. The chemical composition of the nebulae is then calculated and compared to previous determinations. A discussion is given of: (1) the recombination line abundances, (2) the exciting stars of the nebulae, and (3) possible evolutionary effects.
Key words: ISM: abundances / planetary nebulae: individual: NGC 40, NGC 6153 / infrared: ISM / ISM: lines and bands
© ESO, 2003
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