Hostname: page-component-5c6d5d7d68-wtssw Total loading time: 0 Render date: 2024-08-22T04:18:45.128Z Has data issue: false hasContentIssue false
  • English
  • Français

Polarization in Be Stars: (Review Paper)

Published online by Cambridge University Press:  14 August 2015

George V. Coyne
George V. Coyne*
Affiliation:
University of Arizona, Tucson, Ariz., U.S.A. and Vatican Observatory, Vatican City State

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.

A review of polarization produced in the extended circumstellar disks about Be stars is given. While variability of the polarization and its peculiar wavelength dependence in wide-band continuum measurements are discussed, emphasis is placed upon the recently discovered polarization effects in the emission lines and upon a discussion of models. Scattering in the photosphere of a star, even one rigidly rotating near breakup velocity, does not explain the observations. Better fits to the observations are obtained by scattering from electrons in a flattened gaseous disk extending some 10 stellar radii from the star with electron temperatures Te ≅ 10 000 K and electron densities Ne ≅ 1012 cm−3. In some stars the emission flux in Hα and Hβ appears to be partly polarized.

Type
Part III: New Observational Techniques
Information
Symposium - International Astronomical Union , Volume 70: Be and Shell Stars , 1976 , pp. 233 - 260
Copyright
Copyright © Reidel 1976 

References

Angel, J. R. P. and Landstreet, J. D.: 1970a, Astrophys. J. Letters 160, L147.Google Scholar
Angel, J. R. P. and Landstreet, J. D.: 1970b, Astrophys. J. Letters 162, L61.Google Scholar
Appenzeller, I. and Hiltner, W. A.: 1967, Astrophys. J. 149, 353.Google Scholar
Behr, A.: 1959, Nach. Akad. Wiss. Göttingen 2; Math-Phys. Kl. , No. 7, 185 (= Veröff. Göttingen, No. 126).Google Scholar
Bernacca, P. D. and Perinotto, M.: 1971, Contr. Obs. Astron. Univ. Padova in Asiago , No. 250.Google Scholar
Boyarchuk, A. A. and Kopylov, I. M.: 1964, Crimea Izv. 32, 44.Google Scholar
Burbidge, G. R. and Burbidge, E. M.: 1953, Astrophys. J. 117, 407.CrossRefGoogle Scholar
Burbidge, G. R. and Burbidge, E. M.: 1956, Vistas in Astronomy 2, 1446.Google Scholar
Capps, R. W., Coyne, G. V., and Dyck, H. M.: 1973, Astrophys. J. 184, 173.Google Scholar
Cassinelli, J. P. and Haisch, B. M.: 1974, Astrophys. J. 188, 101.Google Scholar
Cassinelli, J. P. and Hummer, D. C.: 1971, Monthly Notices Roy. Astron. Soc. 153, 9.CrossRefGoogle Scholar
Chandrasekhar, S.: 1946, Astrophys. J. 103, 351.Google Scholar
Clarke, D. and Grainger, J. F.: 1966, Ann. Astrophys. 29, 355.Google Scholar
Clarke, D. and McLean, I. S.: 1974, Monthly Notices Roy. Astron. Soc. 167, 27p.Google Scholar
Clarke, D. and McLean, I. S.: 1975, Monthly Notices Roy. Astron. Soc. 172, 545.CrossRefGoogle Scholar
Clarke, D. and McLean, I. S.: 1976, Monthly Notices Roy. Astron. Soc. 174, 335.CrossRefGoogle Scholar
Clarke, D., McLean, I. S., and Wyllie, T. H. A.: 1975, Astron. Astrophys. 43, 215.Google Scholar
Cohen, M., Anderson, C. M., Cowley, A., Coyne, G. V., Fawley, W., Gull, T. R., Harlan, E. A., Herbig, G. H., Holden, F., Hudson, H. S., Jakoubek, R. O., Johnson, H. M., Merrill, K. M., Schiffer, F. H. III, Soifer, B. T., and Zuckerman, B.: 1975, Astrophys. J. 179, 15.Google Scholar
Collins, G. W.: 1970, Astrophys. J. 159, 583.Google Scholar
Coyne, G. V.: 1970, Astrophys. J. 161, 1011.CrossRefGoogle Scholar
Coyne, G. V.: 1971, Specola Vatic. Ric. Astron. 8, 201.Google Scholar
Coyne, G. V.: 1974, Monthly Notices Roy. Astron. Soc. 169, 7p.Google Scholar
Coyne, G. V.: 1975a, Astron. Astrophys. , in press.Google Scholar
Coyne, G. V.: 1975b, Specola Vatic. Ric. Astron. 8, 533.Google Scholar
Coyne, G. V. and Gehrels, T.: 1967, Astron. J. 72, 887.Google Scholar
Coyne, G. and Kruszewski, A.: 1969, Astron. J. 74, 528.Google Scholar
Coyne, G. V. and McLean, I. S.: 1975, Astron. J. 80, 702.Google Scholar
Coyne, G. V. and Vrba, F. J.: 1976, Astrophys. J. , in press.Google Scholar
Coyne, G. V., Gehrels, T., and Serkowski, K.: 1974, Astron. J. 79, 581.Google Scholar
Derviz, T.: 1970, Astrophysics (Astrofizika) 6, 351.Google Scholar
Eggen, O. J., Mathewson, D. S., and Serkowski, K.: 1967, Nature 213, 1216.Google Scholar
Feinstein, A.: 1968, Z. Astrophys. 68, 29.Google Scholar
Feinstein, A.: 1976, this volume, p. 149.CrossRefGoogle Scholar
Gray, D. F. and Marlborough, J. M.: 1974, Astrophys. J. Suppl. 27, 121.Google Scholar
Haisch, B. M. and Cassinelli, J. P.: 1976, this volume, p. 375.Google Scholar
Hall, J. S.: 1949, Science 109, 166.Google Scholar
Hall, J. S.: 1958, Publ. U.S. Naval Obs. 17, Part VI.Google Scholar
Hall, J. S. and Mikesell, A. H.: 1950, Publ. U.S. Naval Obs. , Washington, D.C., 2nd Series, XVII, Part I.Google Scholar
Harrington, J. P. and Collins, G. W.: 1968, Astrophys. J. 151, 1051.Google Scholar
Hayes, D.: 1975, Publ. Astron. Soc. Pacific 87, 609.Google Scholar
Hayes, D. P. and Illing, R. M. E.: 1974, Astron. J. 79, 1430.Google Scholar
Hiltner, W. A.: 1949, Science 109, 165.Google Scholar
Hiltner, W. A.: 1956, Astrophys. J. Suppl. 2, 389.Google Scholar
Huang, Su-Shu: 1972, Astrophys. J. 171, 549.Google Scholar
Huang, Su-Shu: 1973, Astrophys. J. 183, 541.Google Scholar
Illing, R. M. E.: 1973, Dissertation, Physics Department, Columbia University.Google Scholar
Kitchin, C. R.: 1970, Monthly Notices Roy. Astron. Soc. 150, 455.Google Scholar
Kruszewski, A.: 1974, in Gehrels, T. (ed.), Planets, Stars and Nebulae Studied with Photopolarimetry , University of Arizona Press, Tucson, p. 845.Google Scholar
Lesh, J. R.: 1968, Astrophys. J. Suppl. 17, 371.Google Scholar
McLean, I. S.: 1974, Dissertation, The University of Glasgow, Scotland.Google Scholar
McLean, I. S. and Clarke, D.: 1976, this volume, p. 261.Google Scholar
Merrill, P. W.: 1956, Vistas in Astronomy 2, 1375.Google Scholar
Nagirner, D. T.: 1962, Trudy Leningrad Astron. Obs. 19, 79.Google Scholar
Öhman, Y.: 1934, Nature 134, 534.Google Scholar
Öhman, Y.: 1946, Astrophys. J. 104, 460.Google Scholar
Poeckert, R.: 1975a, Astrophys. J. 196, 777.Google Scholar
Poeckert, R.: 1975b, private communication.Google Scholar
Poeckert, R. and Marlborough, J. M.: 1976, this volume, p. 277.Google Scholar
Rucinski, S. M.: 1970, Acta Astron. 20, 1.Google Scholar
Schild, R. E.: 1966, Astrophys. J. 146, 142.Google Scholar
Schild, R. E.: 1973, Astrophys. J. 179, 221.Google Scholar
Sen, K. K. and Lee, W. M.: 1961, Publ. Astron. Soc. Japan 13, 263.Google Scholar
Serkowski, K.: 1968, Astrophys. J. 154, 115.Google Scholar
Serkowski, K.: 1970, Astrophys. J. 160, 1083.Google Scholar
Serkowski, K.: 1975, private communication.Google Scholar
Serkowski, K., Mathewson, D. S., and Ford, V. L.: 1975, Astrophys. J. 196, 261.Google Scholar
Shakhovskoi, N. M.: 1962, Astron. Circ. U.S.S.R. , No. 228.Google Scholar
Shakhovskoi, N. M.: 1964, Astron. Zh. 41, 1042 (transl. in Soviet Astron. AJ 8, 833).Google Scholar
Slettebak, A. and Howard, R. F.: 1955, Astrophys. J. 121, 102.Google Scholar
Stein, W. A.: 1972, Publ. Astron. Soc. Pacific 84, 627.Google Scholar
Uesugi, A. and Fukuda, I.: 1970, Contr. Inst. Astrophys. and Kwasan Obs. Univ. of Kyoto , No. 189.Google Scholar
Vitrichenko, E. A. and Efimov, Y. S.: 1965, Izv. Krymsk. Astrophys. Obs. 34, 114.Google Scholar
Zellner, B. and Serkowski, K.: 1972, Publ. Astron. Soc. Pacific 84, 619.Google Scholar