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On the puzzling line spectrum of the B[e]-supergiant R 4 of the SMC

Published online by Cambridge University Press:  04 August 2017

F.-J. Zickgraf  and
B. Wolf
F.-J. Zickgraf
Affiliation:
Landessternwarte, Königstuhl D-6900 Heidelberg FRG
B. Wolf
Affiliation:
Landessternwarte, Königstuhl D-6900 Heidelberg FRG

Extract

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The early-type supergiants of the Magellanic Clouds (MC's) include a class of objects, the B[e] -supergiants, which are described in detail in Zickgraf et al. (1985, 1986) who suggested a two-component wind model consisting of a cool, dense and slowly expanding disk-like equatorial wind component and a hot line-driven fast polar wind. This model could explain many properties of most of the B[e] -supergiants as e. g. the occurrence of “shell” absorption lines. R 4 of the SMC, however, although well fitting to the general scheme of B[e) -supergiants exhibits several pecularities of its line spectrum, which make this particular star an exceptional case among the B[e] -supergiants of the MC's.

Type
Mass Loss from Hot Stars
Information
Symposium - International Astronomical Union , Volume 122: Circumstellar Matter , 1987 , pp. 439 - 440
Copyright
Copyright © Reidel 1987 

References

Zickgraf, F.-J., Wolf, B., Stahl, O., Leitherer, C., Klare, G.: 1985, Astron. Astrophys. 143, 421 Google Scholar
Zickgraf, F.-J., Wolf, B., Stahl, O., Leitherer, C., Appenzeller, I.: 1986, Astron. Astrophys. 163, 119 Google Scholar