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The far-ultraviolet energy distribution of Sirius B from Voyager 2Observations of Sirius obtained with the Voyager 2 ultraviolet spectrometer clearly reveal the presence of flux from the white dwarf Sirius B at wavelengths between 950 and 1100 A. These observations are in good agreement with all previous ultraviolet observations of Sirius B, and in particular with the IUE observations of Boehm-Vitense, Dettmann, and Kapranidis. A joint analysis of the Voyager 2 and IUE observations yields a temperature range of 26,000-28,000 K. A reexamination of current ultraviolet, visible, and X-ray observations produces good general agreement, but no single, mutually consistent, temperature for Sirius B. The Voyager 2 observations can be used to place a firm upper limit of 28,000 K on the temperature of Sirius B.
Document ID
19840052292
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Holberg, J. B.
(Arizona, University Tucson, AZ, United States)
Wesemael, F.
(Montreal, Universite Montreal; Observatoire du Mont Megantic, Quebec, Canada)
Hubeny, I.
(Ceskoslovenska Akademie Ved Astronomicky Ustav, Ondrejov, Czechoslovakia)
Date Acquired
August 12, 2013
Publication Date
May 15, 1984
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 280
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
84A35079
Funding Number(s)
CONTRACT_GRANT: NAGW-147
CONTRACT_GRANT: NAS7-100
Distribution Limits
Public
Copyright
Other

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