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An ultraviolet view of stellar winds

Published online by Cambridge University Press:  14 August 2015

Theodore P. Snow Jr.
Theodore P. Snow Jr.*
Affiliation:
Laboratory for Atmospheric and Space Physics Department of Physics and Astrophysics, University of Colorado

Abstract

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Ultraviolet observations of mass-loss effects in O stars have, over the past decade, revealed a broad picture of a phenomenon whose extent was only partially evident from earlier ground-based observations. Ultraviolet resonance lines of a variety of ionization stages of several common elements provide a comprehensive probe of the low-density, extended winds. Three general types of information have been derived from ultraviolet spectroscopy of mass-loss profiles: (1) the nature of the stars which experience mass loss via radiatively-driven winds; (2) the physical conditions in the winds; and (3) variability in the outflow, which in turn may yield clues to the origins of the winds. Observations and results in each of these areas are reviewed, and some new results are included. A good correlation of mass loss rate and luminosity is indicated by the data, in agreement with theoretical predictions. Time variations in the P Cygni profiles may be quite common, with variability on times of hours or longer. Anticipated new observations, which should be possible with existing and planned instrumentation, are described.

Type
Session 2: U.V. Spectroscopy
Information
Symposium - International Astronomical Union , Volume 83: Mass Loss and Evolution of O-Type Stars , 1979 , pp. 63 - 80
Copyright
Copyright © Reidel 1979 

References

Abbott, D.C. 1978, Ap. J., in press.Google Scholar
Brucato, R.J. 1971, M.N.R.A.S., 153, 435.Google Scholar
Carruthers, G.R. 1968, Ap.J., 151, 269.Google Scholar
Conti, P.S. and Frost, S.A. 1974, Ap.J. (Letters), 190, L137.CrossRefGoogle Scholar
Conti, P.S. and Niemalä, V.A. 1976, Ap.J. (Letters), 209, L37.CrossRefGoogle Scholar
Gurzadyan, G.A. 1975, Space Sci. Rev., 18, 95.Google Scholar
Henize, D.G., Wray, J.D., Parsons, S.B., Benedict, G.F., Bruhweiler, F.W., Rybski, P.M. and O'Callaghan, F.G. 1975, Ap.J. (Letters), 199, L119.Google Scholar
Lamers, H.J.G.L.M. and Morton, D.C. 1976, Ap.J. (Suppl.), 32, 715.CrossRefGoogle Scholar
Lamers, H.J.G.L.M. and Rogerson, J.B. 1978, Astr. Ap., in press.Google Scholar
Lamers, H.J.G.L.M. and Snow, T.P. 1978, Ap.J., 219, 504.Google Scholar
Lamers, H.J.G.L.M. and Snow, T.P. 1979, in preparation.Google Scholar
Lamers, H.J.G.L.M., Stalio, R. and Kondo, Y. 1978, Ap.J., in press.Google Scholar
Leep, E.M. and Conti, P.S. 1978, Ap.J., submitted.Google Scholar
Marlborough, J.M. and Snow, T.P. 1976, IAU Symposium 70, The Merrill-McLaughlin Memorial Symposium on Be and Shell Stars (ed. Slettebak, A., Boston: D. Reidel).Google Scholar
Morton, D.C. 1967, Ap.J., 147, 1017.Google Scholar
Morton, D.C. 1976, Ap.J., 203, 386.Google Scholar
Rogerson, J.B. and Lamers, H.J.G.L.M. 1975, Nature, 256, 190.Google Scholar
Rosendhal, J.D. 1973a, Ap.J., 182, 523.Google Scholar
Rosendhal, J.D. 1973b, Ap.J., 186, 909.CrossRefGoogle Scholar
Rosendhal, J.D. and Wegner, G.A. 1970, Ap.J., 162, 547.Google Scholar
Snow, T.P. 1977, Ap.J., 217, 760.Google Scholar
Snow, T.P. and Hayes, D.P. 1978, Ap.J., submitted.Google Scholar
Snow, T.P. and Marlborough, J.M. 1976, Ap.J. (Letters), 203, L87.Google Scholar
Snow, T.P. and Morton, D.C. 1967, Ap.J. (Suppl.), 32, 429.Google Scholar
Stecher, T.P. 1968, Proc. Symp. on Wolf-Rayet Stars, ed. Gebbie, K.B. and Thomas, R.N., NBS Special Pub. No. 307, p. 65.Google Scholar
Wegner, G.A. and Snow, T.P. 1978, Ap.J. (Letters), submitted.Google Scholar
York, D.G., Vidal-Madjar, A., Laurent, C. and Bonnet, R. 1977, Ap.J. (Letters), 213, L61.CrossRefGoogle Scholar