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IUE observations of magnetically controlled stellar winds in the helium peculiar starsDramatic periodic variations in the C IV resonance lines of magnetic helium-weak sn stars HD 5737 = alpha Scl, HD 21699 = HR 1063, and HD 79158 = 36 Lyn are discussed. In all three cases, the 1548,50 doublet is the only non-negligibly variable UV spectral feature. The line profiles are consistent with outflow in a jet-like structure. In HD 21699 this outflow arises from one of the magnetic polar regions. Observations of two additional He-wk sn stars do not reveal strong C IV absorption, implying that the UV characteristics of these stars are less uniform than the optical phenomenology.
Document ID
19870009797
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Shore, Steven N.
(New Mexico Inst. of Mining and Technology Socorro, NM, United States)
Brown, Douglas N.
(Washington Univ. Seattle, United States)
Date Acquired
September 5, 2013
Publication Date
September 1, 1986
Publication Information
Publication: ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE
Subject Category
Astrophysics
Accession Number
87N19230
Funding Number(s)
CONTRACT_GRANT: NAG5-357
CONTRACT_GRANT: NAG5-179
Distribution Limits
Public
Copyright
Other

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