Hostname: page-component-8448b6f56d-t5pn6 Total loading time: 0 Render date: 2024-04-18T10:35:02.892Z Has data issue: false hasContentIssue false
  • English
  • Français

“Normal” LBV eruptions à la S Doradus

Published online by Cambridge University Press:  12 April 2016

B. Wolf
B. Wolf*
Affiliation:
Landessterwarte Königstuhl D-6900 Heidelberg 1

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The main characteristics of the LBVs with “normal” S Dor-type outbursts are reviewed. At quiescence they are luminous (MBol ≈ −9 to −10) OB supergiants (14 000 K ≲ Teff ≲ 30 000 K) occupying an inclined instability strip in the HRD. The most luminous S Dor variables are the hottest ones. During outburst dense envelopes are expelled of equivalent spectral type middle A to early F. S Dor variables occupy at maximum a vertical strip in the HRD at T≈8000 K. The observed amplitudes in the visual range increase from 1 mag (e.g. R71; Teff = 14500 K at quiescence) to 2.5 mag (e.g. R127; Teff = 33000 K at quiescence). The existence of an amplitude-luminosity relation is suggested which can be used to derive extragalactic distances.

Type
Section I: Main Papers, General Discussions, and Two Panel Discussions
Information
International Astronomical Union Colloquium , Volume 113: Physics of Luminous Blue Variables , 1989 , pp. 91 - 100
Copyright
Copyright © Kluwer 1989

References

Appenzeller, I.: 1986, IAU Symposium 116, p. 139 Google Scholar
Appenzeller, I.: 1988, this volumeGoogle Scholar
Appenzeller, I., Wolf, B.: 1982 ESO Workshop “The Most Massive Stars”, p. 131 Google Scholar
Appenzeller, I., Wolf, B., Stahl, O.: 1987, “Instabilities in Luminous Early Type Stars”, p. 241 Google Scholar
Davidson, K.: 1987, Astrophys. J. 317, 760 Google Scholar
Davidson, K.: 1988, this volumeGoogle Scholar
Humphreys, R.M.: 1975, Astrophys. J. 200, 426Google Scholar
Humphreys, R.M.: 1988, this volumeGoogle Scholar
Humphreys, R.M., Davidson, K.: 1979, Astrophys. J. 232, 409CrossRefGoogle Scholar
Humphreys, R.M., Leitherer, C., Stahl, O., Wolf, B.: 1988a, Astron. Astrophys. 203, 306 Google Scholar
Humphreys, R.M., Stahl, O., Davidson, K., Wolf, B., Zickgraf, F.-J.: 1988, this volumeGoogle Scholar
Kudritski, R.: 1988, this volume Lamers, H.J.C.L.M.: 1986, “Instabilities in Luminous Early-Type Stars”, p. 99 Google Scholar
Leitherer, C., Appenzeller, I., Mare, G., Lamers, H.J.C.L.M., Stahl, O., Waters, L.B.F.M., Wolf, B.: 1985, Astron. Astrophys. 153, 168 Google Scholar
Maeder, A.: 1982, Astron. Astrophys. 105, 149 Google Scholar
Maeder, A.: 1983, Astron. Astrophys. 120, 113 Google Scholar
Maeder, A., Meynet, G.: 1987, Astron. Astrophys. 182, 243 Google Scholar
Schmutz, W., Leitherer, C., Torres-Dodgen, A.V., Vogel, M., Conti, P.S., Hamann, W.-R., Wessolowski, U.: 1988, this volumeGoogle Scholar
Sharov, A.S.: 1975, IAU Symposium 67, p. 275 Google Scholar
Stahl, O.: 1986, Astron. Astrophys. 164, 321 Google Scholar
Stahl, O.: 1988, this volumeGoogle Scholar
Stahl, O., Wolf, B.: 1982, Astron. Astrophys. 110, 272 Google Scholar
Stahl, O., Wolf, B.: 1986, Astron. Astrophys. 158, 371 Google Scholar
Stahl, O., Wolf, B., de Groot, M., Leitherer, C.: 1985, Astron. Astrophys. Suppl. Ser. 61, 237 Google Scholar
Stahl, O., Wolf, B., Klare, G., Cassatella, A., Krautter, J., Persi, P., Ferrari-Toniolo, M.: 1983, Astron. Astrophys. 127, 49 Google Scholar
Stahl, O., Wolf, B., de Groot, M., Leitherer, C.: 1985, Astron. Astrophys. Suppl. Ser. 61, 237 Google Scholar
Stahl, O., Wolf, B., Zickgraf, F.-J.: 1987, Astron. Astrophys. 184, 193 Google Scholar
Sterken, G., 1988, this volume van Genderen, A.M., Thé, P.S., Augusteijn, Th., Engelsmann, E.C., van der Grift, E.W., Prein, J.J., Reimijn, R.L., Steeman, F.W.M., van Weeren, N.: 1988, Astron.Astrophys. Suppl. Ser. 74, 453 Google Scholar
Viotti, R., Altamore, A., Barylak, M., Cassatella, A., Gilmoszi, R., Rossi, C.: 1984, NASA Conf. Publ. 2349, p. 231 Google Scholar
Walborn, N.R.: 1977, Astrophys. J. 215, 53 CrossRefGoogle Scholar
Walborn, N.R.: 1982, Astrophys. J. 256, 452 CrossRefGoogle Scholar
Walborn, N.R.: 1988, this volumeGoogle Scholar
Wolf, B.: 1986, IAU Symp. 122, p. 409 Google Scholar
Wolf, B.: 1988, Astron. Astrophys. submittedGoogle Scholar
Wolf, B., Appenzeller, I., Cassatella, A.: 1980, Astron. Astrophys. 88, 15 Google Scholar
Wolf, B., Appenzeller, I., Stahl, O.: 1981a, Astron. Astrophys. 103, 94 Google Scholar
Wolf, B., Stahl, O., de Groot, M.J.H., Sterken, C.: 1981b, Astron. Astrophys. 99, 351 Google Scholar
Wolf, B., Stahl, O., Seifert, W.: 1987, Astron. Astrophys. 186, 182 Google Scholar
Wolf, B., Stahl, O., Smoliński, J., Cassatella, A.: 1988, Astron. Astrophys. Suppl. Ser. 74, 239 Google Scholar
Wolf, B., Zickgraf, F.-J.: 1986, Astron. Astrophys. 164, 435 Google Scholar