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High resolution EUV spectroscopy of 56 Pegasi (KO 2p + wd)The hypothesis that X-ray and UV emission by 56 Pegasi (K0II p + wd) originates in a conventional chromosphere, transition region and corona, as opposed to Schindler's hypothesis of accretion of the cool stellar wind onto the white dwarf companion, is discussed. Analysis of IUE data indicates that within the uncertainties associated with determining the stellar radius and abundances, the chromosphere, transition region, and corona of 56 Peg are similar to that of Beta Draconis both in structure and energy balance. The accretion hypothesis is not a unique explanation of the observed spectral properties and the white dwarf companion may not play a direct role. Furthermore, 56 Peg, according to current values of V-R and luminosity class, is on the nonsolar side of the Linsky-Haisch dividing line whereas Beta Draconis is on the solar side.
Document ID
19830003644
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jordan, C.
(Oxford Univ. Oxford, United Kingdom)
Brown, A.
(Queen Mary Coll. Boulder, Colo., United States)
Ayres, T. R.
(Lab. for Atmospheric and Space Physics)
Linsky, J. L.
(Joint Inst. for Lab. Astrophysics)
Stencel, R. E.
(Joint Inst. for Lab. Astrophysics)
Date Acquired
August 11, 2013
Publication Date
June 1, 1982
Publication Information
Publication: ESA 3rd European IUE Conf.
Subject Category
Astronomy
Accession Number
83N11914
Funding Number(s)
CONTRACT_GRANT: NAG5-199
CONTRACT_GRANT: NAG5-82
CONTRACT_GRANT: NGL-006-003-057
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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