Astrophysics and Space Science

, Volume 221, Issue 1–2, pp 409–426 | Cite as

Synthesis of line profiles from models of structured winds

  • J. Puls
  • A. Feldmeier
  • U. W. E. Springmann
  • S. P. Owocki
  • A. W. Fullerton
Session 8 Hydrodynamical Simulations of the Evolution of Wind Structure


On the basis of a a careful analysis of resonance line formation (both for singlets and doublets) in structured winds, presenttime dependent models of the line driven winds of hot stars (Owocki et al., this volume; Feldmeier, this volume) are shown to be able to explain a number of observational features with respect to variability and structure: they are (in principle) able to reproduce theblack andbroad troughs (without any artificial “turbulence velocity”) and the “blue edge variability” observed in saturated resonance lines; they might explain the “long lived narrow absorption components” often observed in unsaturated lines at high velocities; they predict a relation between the “edge velocity” of UV-lines and the radiation temperature of the observed X-ray emission.

As a first example of the extent to which theoretical models can be constrained by comparisons between observations and profiles calculated by spectrum synthesis from structured winds, we show here that models with deep-seated onset of structure formation (≳ 1.1R * ) produce resonance lines which agreequalitatively with observational findings; in contrast, the here presented models with structure formation only well out in the wind (≳ 1.6R * ) fail in this respect.

Key words

Line: formation Stars: atmospheres Stars: early type Stars: mass-loss 


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  1. Abbott, D.C.: 1980,ApJ 242, 1183Google Scholar
  2. Abbott, D.C.: 1982,ApJ 263, 723Google Scholar
  3. Bieging, J.H., Abbott, D.C., Churchwell, E.B.: 1989,ApJ 340, 518Google Scholar
  4. Carlberg, R.G.: 1980,ApJ 241, 1131Google Scholar
  5. Castor, J.I., Abbott, D.C., Klein, R.I.: 1975,ApJ 195, 157Google Scholar
  6. Cooper, R.G., Owocki, S.P.: 1992, ‘’ in L. Drissen, C. Leitherer, A. Nota, ed(s).,Nonisotropic and Variable Outflows from Stars, ASP Conf. Series Vol. 22, , 281Google Scholar
  7. Drew, J.E.: 1989,ApJS 71, 267Google Scholar
  8. Ebbets, D.C.: 1982,ApJS 48, 399Google Scholar
  9. Feldmeier, A.: 1993,Thesis, LMU München ,Google Scholar
  10. Friend, D., Abbott, D.C.: 1986,ApJ 311, 701Google Scholar
  11. Fullerton, A.W., Gies, D.R., Bolton, C.T.: 1992,ApJ 390, 650Google Scholar
  12. Gabler, R., Gabler, A., Kudritzki, R.P., Puls, J., Pauldrach, A.W.A.: 1989,A&A 226, 162Google Scholar
  13. Grady, C.A., Snow, T.P., Timothy, J.G.: 1983,ApJ 271, 691Google Scholar
  14. Groenewegen, M.A.T., Lamers, H.J.G.L.M.: 1989,A&AS 79, 359Google Scholar
  15. Groenewegen, M.A.T., Lamers, H.J.G.L.M., Pauldrach, A.W.A.: 1989,A&A 221, 78Google Scholar
  16. Hamann, W.R.: 1980,A&A 84, 342Google Scholar
  17. Hamann, W.R.: 1981,A&A 93, 353Google Scholar
  18. Harnden, F.R., et al.: 1979,ApJ 234, L51Google Scholar
  19. Henrichs, H.F.: 1988, ‘’ in P.S. Conti A.B. Underhill, ed(s).,O Stars and Wolf-Rayet Stars. NASA SP-497, , 199Google Scholar
  20. Henrichs, H.F.: 1991, ‘’ in D. Baade, ed(s).,Rapid Variability of OB-Stars: Nature and Diagnostic Value. ESO Conf. and Workshop Proceedings No. 36, , 199Google Scholar
  21. Hillier, D.J.: 1991,A&A 247, 455Google Scholar
  22. Hillier, D.J., Kudritzki, R.P., Pauldrach, A.W.A., Puls, J., Baade, D., Schmitt, J.H.M.M.: 1993,A&A , in pressGoogle Scholar
  23. Kudritzki, R.P., Gabler, R., Kunze, D., Pauldrach, A.W.A., Puls, J.: 1991, ‘’ in C. Leitherer, N.R. Walborn, T.M. Heckman, C.A. Norman, ed(s).,Massive Stars in Starbursts, STScI Symp. Ser. Vol. 5., Cambridge University Press: Cambridge, 59Google Scholar
  24. Kudritzki, R.P., Lennon, D.J., Haser, S.M., Puls, J., Pauldrach, A.W.A., Gabler, R., Husfeld, D.: 1994, ‘’ in D. Vanbeveren, W. Van Rensbergen, C. de Loore, ed(s).,Space Science Reviews, Kluwer: Dordrecht, in pressGoogle Scholar
  25. Lamers, H.J.G.L.M., Gathier, R., Snow, T.P.: 1982,ApJ 258, 186Google Scholar
  26. Lucy, L.B.: 1982,ApJ 255, 278Google Scholar
  27. Lucy, L.B.: 1983,ApJ 274, 372Google Scholar
  28. Lucy, L.B.: 1984,ApJ 284, 351Google Scholar
  29. Lucy, L.B., Solomon, P.: 1970,ApJ 159, 879Google Scholar
  30. MacGregor, K.B., Hartmann, L., Raymond, J.C.: 1979,ApJ 231, 514Google Scholar
  31. Owocki, S.P.: 1990,Reviews in Modern Astronomy 3, Springer: Berlin, 98Google Scholar
  32. Owocki, S.P.: 1991, ‘’ in L. Crivellari, I. Hubeny, D.G. Hummer, ed(s).,Stellar Atmospheres: Beyond Classical Models, Kluwer: Dordrecht, 235Google Scholar
  33. Owocki, S.P.: 1992, ‘’ in U. Heber, C.S. Jeffery, ed(s).,The Atmospheres of Early-Type Stars, Springer: Berlin, 393Google Scholar
  34. Owocki, S.P., Rybicki, G.B.: 1984,ApJ 284, 337Google Scholar
  35. Owocki, S.P., Rybicki, G.B.: 1985,ApJ 299, 265Google Scholar
  36. Owocki, S.P., Castor, J.I., Rybicki, G.B.: 1988,ApJ 335, 914Google Scholar
  37. Pauldrach, A.: 1987,A&A 183, 295Google Scholar
  38. Pauldrach, A., Puls, J., Kudritzki, R.P.: 1986,A&A 164, 86Google Scholar
  39. Pauldrach, A.W.A., Kudritzki, R.P., Puls, J., Butler, K.: 1990,A&A 228, 125Google Scholar
  40. Pauldrach, A.W.A., Kudritzki, R.P., Puls, J., Butler, K., Hunsinger, J.: 1993,A&A , in pressGoogle Scholar
  41. Prinja, R.K.: 1992, ‘’ in L. Drissen, C. Leitherer, A. Nota, ed(s).,Nonisotropic and Variable Outflows from Stars. ASP Conf Series Vol.22, , 167Google Scholar
  42. Prinja, R.K., Howarth, I.D.: 1986,ApJS 61, 357Google Scholar
  43. Prinja, R.K., et al.: 1992,ApJ 390, 266Google Scholar
  44. Puls, J.: 1987,A&A 184, 227Google Scholar
  45. Puls, J., Pauldrach, A.W.A., Kudritzki, R.P., Owocki, S.P., Najarro, F.: 1993,Reviews in Modern Astronomy 6, Springer: Berlin, 271Google Scholar
  46. Puls, J., Owocki, S.P., Fullerton, A.W.: 1993,A&A , in pressGoogle Scholar
  47. Sellmaier, F., Puls, J., Kudritzki, R.P., Gabler, R., Gabler, A., Voels, S.A.: 1993,A&A 273, 533Google Scholar
  48. Seward, F.D., et al.: 1979,ApJ 234, L55Google Scholar
  49. Walborn, N.R., Panek, R.J.: 1984,ApJ 280, L27Google Scholar

Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • J. Puls
    • 1
  • A. Feldmeier
    • 1
  • U. W. E. Springmann
    • 1
  • S. P. Owocki
    • 2
  • A. W. Fullerton
    • 2
  1. 1.Institut für Astronomie und AstrophysikUniversität MünchenMünchenGermany
  2. 2.Bartol Research InstituteThe University of DelawareNewarkUSA

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