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The Wind Momentum – Luminosity Relationship of Blue Supergiants

Published online by Cambridge University Press:  12 April 2016

Rolf-Peter Kudritzki
Rolf-Peter Kudritzki*
Affiliation:
Institut für Astronomie und Astrophysik der Universität München, Scheinerstr.1, D-81679 München, Germany Max-Planck-Institut für Astrophysik, D-85740 Garching bei München, Germany

Abstract

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The prediction of the Wind Momentum - Luminosity Relationship (WLR) based on the theory of radiation driven winds is verified by quantitative spectroscopy of winds of A-, B- and O-supergiants. The relationship depends on spectral type. New stellar wind calculations are presented reproducing the observed spectral type dependence. The impact of spectral variability on the WLR is investigated by an analysis of some hundred spectra of the luminous A0Ia-supergiant HD92207 obtained within the Heidelberg Spectral Variability Survey and found to be small.

Finally, the WLR is discussed as a tool for the determination of extragalactic distances. Recent results obtained for the Galaxy, M31 and M33 are presented. The potential of the method is discussed with the conclusion that it may allow independent distance moduli to be obtained with an accuracy of ten percent out to the Virgo and Fornax clusters of galaxies.

Type
Session VI Evolutionary Aspects
Information
International Astronomical Union Colloquium , Volume 169: Variable and Non-spherical Stellar Winds in Luminous Hot Stars , 1999 , pp. 405 - 415
Copyright
Copyright © Springer-Verlag 1999

References

Ferrarese, L. et al. 1996, ApJ 464, 568 Google Scholar
Freedman, W. et al. 1994a, ApJ 435, L31 CrossRefGoogle Scholar
Freedman, W. et al. 1994b, Nature 371, 757 CrossRefGoogle Scholar
Kaufer, A., Stahl, O., Wolf, B., Gang, Th., Gummersbach, C.A., Kovács, J., Mandel, H., Szeifert, Th. 1996, A&A 305, 887 Google Scholar
Knoerndel, O., Kudritzki, R.P., Puls, J., Lennon, D.J. 1998, A&A, in preparationGoogle Scholar
Kudritzki, R.P., Pauldrach, A.W.A., Puls, J., & Abbott, D.C. 1989, A&A 219, 205 Google Scholar
Kudritzki, R.P., Lennon, D.J., Haser, S.M., Puls, J., Pauldrach, A., Venn, K., & Voels, S.A. 1996a, in “ Science with the Hubble Space Telescope II, eds. Benvenuti, P. et al., 285–296 Google Scholar
Kudritzki, R.P., Mendez, R.H., McCarthy, J.K., Puls, J. 1997, Proc. IAU Symp.180, “Planetary Nebulae”, eds. Habing, H.J. and Lamers, H.J.G.L., page 64 –74, invited paper, (Kluwer Academic Publishers)Google Scholar
Kudritzki, R.P., Springmann, U., Puls, J., Pauldrach, A.W.A., Lennon, M. 1998a, ASP Conf. Series Vol. 131, p. 299 – 308 Google Scholar
Kudritzki, R.P., Puls, J., Lennon, D.J., Venn, K.A., McCarthy, J.K., & Herrero, A. 1998b, A&A, in preparation.Google Scholar
Kudritzki, R.P., Springmann, U., Puls, J., Pauldrach, A.W.A., Lennon, M. 1998c, A&A, in preparation.Google Scholar
Kudritzki, R.P. 1998, “Quantitative Spectroscopy of the Brightest Blue Supergiant Stars in Galaxies” in Proc. of “Stellar Astrophysics for the Local Group”, VIII Canary Island Winterschool for Astrophysics, eds. Aparicio, A. et al., Cambridge University Press, p. 149–262, invited lecturesGoogle Scholar
McCarthy, J.K., Lennon, D.J., Venn, K.A., Kudritzki, R.P., Puls, J., & Najarro, F. 1995, ApJ 455, L35 CrossRefGoogle Scholar
McCarthy, J.K., Kudritzki, R.P., Lennon, D.J., Venn, K.A., Puls, J. 1997, ApJ 482, 757 Google Scholar
Monteverde, I., Herrero, A., Lennon, D.J., & Kudritzki, R.P. 1997, ApJ Letters 474, L107 Google Scholar
Pauldrach, A.W.A., Lennon, M., Hoffmann, T.L., Sellmaier, F., Kudritzki, R.P., Puls, J. 1998, ASP Conference Series Vol. 131, page 258 – 277 Google Scholar
Prinja, R.K., Massa, D.L. 1998, ASP Conf. Series, Vol. 131, p. 218 – 227 Google Scholar
Puls, J., Kudritzki, R.P., Herrero, A., Pauldrach, A., Haser, S.M., Lennon, D.J., Gabler, R., Voels, S.A., Vilchez, J.M., Wachter, S., & Feldmeier, A. 1996, A&A 305, 171 Google Scholar
Rozanski, R., & Rowan-Robinson, M. 1994, MNRAS 271, 530 Google Scholar
Ruppersberg, R., Kudritzki, R.P., Puls, J., Kaufer, A. 1998, in preparation for A&AGoogle Scholar
Ruppersberg, R. 1998, Diplomarbeit, University of MunichGoogle Scholar
Santolaya-Rey, E., Puls, J., & Herrero, A. 1997, A&A 323, 488 Google Scholar
Springmann, U. 1997, doctoral thesis, University of Munich Google Scholar
Springmann, U., Puls, J. 1998, ASP Conf. Series, Vol. 131, p. 286 – 298 Google Scholar
Tully, R.B., Wolff, S.C. 1984, ApJ 281, 67 Google Scholar