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Disk Winds of B[e] Supergiants

Published online by Cambridge University Press:  12 April 2016

Franz-Josef Zickgraf
Franz-Josef Zickgraf*
Affiliation:
Observatoire Astronomique de Strasbourg, 11 rue de l’Université, F-67000 Strasbourg, France

Abstract

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The class of B[e] supegiants is characterized by a two-component stellar wind consisting of a normal hot star wind in the polar zone and a slow and dense disk-like wind in the equatorial region. The properties of the disk wind are discussed using satellite UV spectra of stars seen edge-on, i.e. through the equatorial disk. These observations show that the disk winds are extremely slow, v∞ ≃ 50 ‒ 90 km s−1, i.e. a factor of ~ 10 slower than expected from the spectral types. Optical emission lines provide a further means to study the disk wind. This is discussed for line profiles of forbidden lines formed in the disk.

Type
Section I Observations of Non-spherical Winds
Information
International Astronomical Union Colloquium , Volume 169: Variable and Non-spherical Stellar Winds in Luminous Hot Stars , 1999 , pp. 40 - 48
Copyright
Copyright © Springer-Verlag 1999

References

Castor, J.P., Abbott, D.C., Klein, R.I., 1975, ApJ 195, 157 Google Scholar
Clampin, M., Nota, A., Golimowski, D.A., Leitherer, C., Durrance, S.T., 1993, ApJ Letters 410, L35 Google Scholar
Humphreys, R.M., Davidson, K., 1979, ApJ 232, 409 Google Scholar
Lamers, H.J.G.L.M., Cerruti-Sola, M. Perinotto, M., 1987, ApJ 314, 726 Google Scholar
Lamers, H.J.G.L.M., Snow, T.P., Lindholm, D.M., 1995, ApJ 455, 269 Google Scholar
Leitherer, C., Appenzeller, I., Klare, G., Lamers, H.J.G.L.M. Stahl, O., Waters, L.B.F.M., Wolf, B., 1985, A&A 153, 168 Google Scholar
Magalhaes, A.M., 1992, ApJ 398, 286 Google Scholar
Muratorio, G. 1981, A&AS 43, 111 Google Scholar
Panagia, N., Macchetto, F., 1982, A&A 106, 266 Google Scholar
Schulte-Ladbeck, R.E., Clayton, C.G., Hillier, D.J., Harries, T.J., Howarth, I.D., 1994, ApJ 429, 846 Google Scholar
Stahl, O., Aab, O., Smolinski, J., Wolf, B., 1991, A&A 252, 693 Google Scholar
Wolf, B., Appenzeller, I., Stahl, O., 1981, A&AS 74, 239 Google Scholar
Wolf, B., Stahl, O., Smolinski, J., Cassatella, A., 1988, A&A 103, 94 Google Scholar
Zickgraf, F.-J., 1988, in: Bianchi, L. and Gilmozzi, R. (eds.) Mass Outflows from Stars and Galactic Nuclei, Kluwer Academic Publishers, Dordrecht, p. 211 Google Scholar
Zickgraf, F.-J., 1998. In: B[e] stars, eds. Hubert, A.M. and Jaschek, C., Kluwer Academic Publishers, in pressGoogle Scholar
Zickgraf, F.-J., Wolf, B., Stahl, O., Leitherer, C., Klare, G., 1985, A&A 143, 421 Google Scholar
Zickgraf, F.-J., Wolf, B., Stahl, O., Leitherer, C., Appenzeller, I., 1986, A&A 163, 119 Google Scholar
Zickgraf, F.-J., Humphreys, R.M., Lamers, H.J.G.L.M., Smolinski, J., Wolf, B., Stahl, O., 1996, A&A, 315, 520 Google Scholar