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Asymmetries around Luminous Red Variables

Published online by Cambridge University Press:  25 May 2016

Antonio Mário Magalhães  and
Kenneth H. Nordsieck
Antonio Mário Magalhães
Affiliation:
Instituto Astronômico e Geofísico, Universidade de São Paulo, São Paulo, Brazil
Kenneth H. Nordsieck
Affiliation:
Space Astronomy Laboratory, University of Wisconsin, Madison, WI 53706, U.S.A.

Abstract

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Departures from spherical symmetry are known to exist around Luminous Red Variables (LRVs). One of the earliest pieces of evidence came from the discovery that light from these objects is polarized. Additional evidence comes from other techniques and observations of related objects. This talk briefly reviews these data and focuses on the mechanisms that produce polarization in LRVs. Emphasis is given on recent spectropolarimetric monitoring data of selected key objects and what we have learned about the LRV environment from such data.

Type
Session IX — Circumstellar Emission and Environment
Information
Symposium - International Astronomical Union , Volume 177: The Carbon Star Phenomenon , 2000 , pp. 433 - 440
Copyright
Copyright © Kluwer 2000 

References

Bedijn, P. J. 1988, A&A, 205, 105 Google Scholar
Bowen, G. H. & Willson, L. A. 1991, ApJ, 375, L53 Google Scholar
Chapman, J. M. 1994, Southern Stars, 35, 241 Google Scholar
Chapman, J. M., Sivagnanam, P., Cohen, R. J. & Le Squeren, A. M. 1994, MNRAS, 268, 475 Google Scholar
Collison, A. J. & Fix, J. D. 1992, ApJ, 390, 191 Google Scholar
Coyne, G. V. & Magalhães, A. M. 1977, AJ, 82, 90 Google Scholar
Coyne, G. V. & Magalhães, A. M. 1979, AJ, 84, 1200 Google Scholar
Diamond, P. J., Kemball, A. J., Junor, W., Zensus, A., Benson, J. & Dhawan, V. 1994, ApJ, 430, L61 CrossRefGoogle Scholar
Gehrz, R. D. 1989, in IAU Symp. 135: Interstellar Dust, ed. Allamandola, L. J. and Tielens, A.G.G.M. (Kluwer), p. 445.Google Scholar
Greenhill, L. J., Colomer, F., Moran, J. M., Backer, D. C., Danchi, W. C. & Bester, M. 1995, ApJ, 449, 365 Google Scholar
Gilliland, R. L. & Dupree, A. K. 1996, ApJ, 463, L29 CrossRefGoogle Scholar
Harrington, J. P. 1969, Astrophys. Lett., 3, 165 Google Scholar
Holenstein, B. D. 1993, PASP, 105, 322.Google Scholar
Johnson, J. J. & Jones, T. J. 1991, AJ, 101, 1735 CrossRefGoogle Scholar
Kruszewski, A., Gehrels, T. & Serkowski, K. 1968, AJ, 73, 677 CrossRefGoogle Scholar
Kwok, S. 1993, Ann. Rev. Astron. Astrophys., 31, 63 CrossRefGoogle Scholar
Lefèvre, J. & Daniel, J.-Y. 1988, in Polarized Radiation of Circumstellar Origin, ed. Coyne, G. V. et al. (Vatican Obs.), p. 523 Google Scholar
Magalhães, A. M. 1988, in Polarized Radiation of Circumstellar Origin, ed. Coyne, G.V. et al. (Vatican Obs.), p. 461 Google Scholar
Magalhães, A. M., Coyne, G. V. & Benedetti, E. K. 1986, AJ, 91, 919 Google Scholar
Nordsieck, K.H. et al. 1994, BAAS, 26, 864 Google Scholar
Plez, B., Brett, J. M. & Nordlund, Å. 1992, A&A, 256, 551 Google Scholar
Plez, B. & Lambert, D. L. 1994, ApJ, 425, L101 Google Scholar
Rodrigues, C. V. & Magalhães, A. M. 1995, in IAU Symp. 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution, ed. van der Hucht, K. A. and Williams, P. M. (Kluwer), p. 260 Google Scholar
Schwarzschild, M. 1975, ApJ, 195, 137 Google Scholar
Serkowski, K. 1966, ApJ, 144, 857 CrossRefGoogle Scholar
Shawl, S. J. 1975, AJ, 80, 602 Google Scholar
Trammell, S. R., Dinerstein, H. L. & Goodrich, R. W. 1994, AJ, 108, 984 Google Scholar
Willson, L. A. & Bowen, G. H. 1988, in Polarized Radiation of Circumstellar Origin, ed. Coyne, G.V. et al. (Vatican Obs.), p. 485 Google Scholar