Extended X-ray emission from planetary nebulae.
Abstract
The first results from the ROSAT All Sky Survey on X-ray emission of PN are presented. X-ray emission from PN was detected. This is the case for NGC 6543, NGC 6853, A 12, NGC 4361, and LoTr 5. X-ray emission compatible with a point source was detected from BD+30 3639, but the spectral distribution of the X-ray photons indicates temperatures above 210 exp 6 K. It is argued that in all cases the central star of the PN can be excluded as the source of the observed X-ray emission.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- October 1992
- Bibcode:
- 1992A&A...264..623K
- Keywords:
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- Planetary Nebulae;
- Sky Surveys (Astronomy);
- X Ray Stars;
- Rosat Mission;
- X Ray Astronomy;
- Astrophysics