X-ray observations of planetary nebulae with binary nuclei

Einstein and EXOSAT satellite observations of X-ray emission from the planetary nebulae A63 and LoTr 5 are reviewed. Both of these systems contain binary central stars. No flux was detected from A63 (central star UU Sge). LoTr 5 (central star IN Com) is a previously unreported X-ray emitter; it show...

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Veröffentlicht in:	The Astrophysical journal 1992-10, Vol.397 (2), p.534-536
Hauptverfasser:	Apparao, K. M. V., Berthiaume, G. D., Nousek, J. A.
Format:	Artikel
Sprache:	eng
Schlagworte:	Astronomy Astronomy & Astrophysics Astrophysics Earth, ocean, space Exact sciences and technology Interstellar medium (ism) and nebulae in milky way Physical Sciences Planetary nebulae Science & Technology Stellar systems. Galactic and extragalactic objects and systems. The universe
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Beschreibung
Zusammenfassung:	Einstein and EXOSAT satellite observations of X-ray emission from the planetary nebulae A63 and LoTr 5 are reviewed. Both of these systems contain binary central stars. No flux was detected from A63 (central star UU Sge). LoTr 5 (central star IN Com) is a previously unreported X-ray emitter; it showed no statistically significant X-ray variability. Three models for the source of the X-ray emission in such systems are considered in the light of these and previous results.
ISSN:	0004-637X 1538-4357
DOI:	10.1086/171809