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Is the DA white dwarf 1910 + 047 a soft X-ray source?The possibility that the recently discovered DA white dwarf WD 1910 + 047 might be an Einstein soft X-ray source is studied, applying a complete model atmosphere analyis to both the optical and the soft X-ray data. It is found that the X-ray source in question is at least one order of magnitude too strong to be compatible with the estimated atmospheric parameters of the possible optical counterpart. The spatial coincidence between the two, however, remains extremely intriguing and has left us with the dilemma of accepting the relatively improbable coincidence of two unrelated objects or rejoicing over the discovery of a highly unusual one.
Document ID
19900063640
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Vennes, Stephane
(Delaware, University Newark, United States)
Date Acquired
August 14, 2013
Publication Date
October 1, 1990
Publication Information
Publication: Astrophysical Journal, Part 2 - Letters
Volume: 361
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
90A50695
Funding Number(s)
CONTRACT_GRANT: NSF AST-87-20530
CONTRACT_GRANT: NAG5-972
Distribution Limits
Public
Copyright
Other

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