The SN stars - Magnetically controlled stellar winds among the helium-weak stars

Details The SN stars - Magnetically controlled stellar winds among the helium-weak stars The SN stars - Magnetically controlled stellar winds among the helium-weak stars

Sep 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987aj.....94..737s&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 94, Sept. 1987, p. 737-750. Research supported by the Research Corp.

Other

40

Helium, Stellar Composition, Stellar Magnetic Fields, Stellar Mass Ejection, Stellar Winds, Supernovae, Iue, Stellar Spectrophotometry, Ultraviolet Spectra

Scientific paper

The authors report observations of magnetically controlled stellar mass outflows in three helium-weak sn stars: HD 21699 = HR 1063, HD 5737 = α Scl, and HD 79158 = 36 Lyn. IUE observations show that the C IV resonance doublet is variable on the rotational timescale but that there are no other strong-spectrum variations in the UV. Magnetic fields, which reverse sign on the rotational timescale, are present in all three stars. The authors interpret this phenomenology in terms of jet-like mass loss above the magnetic poles and discuss these objects in the context of a general survey of the C IV and Si IV profiles of other more typical helium-weak stars.

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