IUE observations of magnetically controlled stellar winds in the helium peculiar stars

Details IUE observations of magnetically controlled stellar winds in the helium peculiar stars IUE observations of magnetically controlled stellar winds in the helium peculiar stars

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.263..361s&link_type=abstract

In ESA Proceedings of an International Symposium on New Insights in Astrophysics. Eight Years of UV Astronomy with IUE p 361-36

Astronomy and Astrophysics

Astrophysics

1

Magnetic Stars, Peculiar Stars, Periodic Variations, Stellar Spectra, Stellar Winds, Carbon, Stellar Magnetic Fields

Scientific paper

The authors have observed dramatic periodic variations in the C IV resonance lines of three magnetic helium-weak sn stars: HD 5737 = α Scl, HD 21699 = HR 1063, and HD 79158 = 36 Lyn. In all three cases, the λλ1548,50 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 the one of the magnetic polar regions. Initial observations of two additional He-wk sn stars have not revealed strong C IV absorption, implying that the UV characteristics of these stars are less uniform than the optical phenomenology.

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