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X-ray observations of planetary nebulae with binary nucleiEinstein 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.
Document ID
19930026495
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Apparao, K. M. V.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Berthiaume, G. D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Nousek, J. A.
(Pennsylvania State Univ. University Park, United States)
Date Acquired
August 15, 2013
Publication Date
October 1, 1992
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 397
Issue: 2
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
93A10492
Funding Number(s)
CONTRACT_GRANT: NAG5-941
Distribution Limits
Public
Copyright
Other

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