Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-20T03:26:29.898Z Has data issue: false hasContentIssue false
  • English
  • Français

Properties of symbiotic stars from studies in the optical region

Published online by Cambridge University Press:  12 April 2016

Franco Ciatti
Franco Ciatti*
Affiliation:
Asiago Astrophysical Observatory

Extract

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.

The traditional definition of Symbiotic Stars (SS) is that of objects which display a combination spectrum (e.g. Merrill, 1950) that is emission lines requiring high-excitation conditions, superposed to the continuum and absorption features of a low-temperature star, most commonly an M-type giant. About one hundred of SS are known and listed today. It is anyway apparent that the classification criteria are rather rough, and since the excitation varies from the simple Me to SS with coronal emission, it is not well defined where a clear division should be made. As a result, the available lists include a very heterogeneous set of objects, probably different phases in stellar evolution. Moreover it has been remarked that SS show a rather confusing variety in their spectroscopic and photometric behaviour. Different intensities of both absorption and emission lines are reported from star to star. These facts indicate a high degree of individuality among SS, which is partly cause and/or effect of the adopted definitions.

Type
Session I - New Observations of Symbiotic Stars
Information
International Astronomical Union Colloquium , Volume 70: The Nature of Symbiotic Stars , 1982 , pp. 61 - 70
Copyright
Copyright © Reidel 1982

References

Allen, D.A. 1978, IAU Colloquium N°46, Hamilton NZ Google Scholar
Allen, D.A. 1980a, Monthly Notices RoyAstron.Soc. 190,75 CrossRefGoogle Scholar
Allen, D.A. 1980b, Monthly Notices Roy Astron.Soc. 192,521 CrossRefGoogle Scholar
Bath, G.T. 1977, Monthly Notices Roy.Astron.Soc. 178,203 CrossRefGoogle Scholar
Belyakina, T.S. 1979, Isvestia Crimskoi Astroph.Obs. 49,133 Google Scholar
Boyarchuk, A.A. 1969, Non-periodic phenomena in variable stars,Budapest, page 395 Google Scholar
Boyarchuk, A.A. 1974, IAU Symposium N°67, Moscow, page 377 Google Scholar
Ciatti, F.,D’Odorico, S.,Mammano, A. 1974, Astron.Astrophys. 34,181 Google Scholar
Ciatti, F.,Mammano, A.,Vittone, A. 1979, Astron.Astrophys. 79,247 Google Scholar
Feast, M.W.,Robertson, B.S.C.,Catchpole, R.M. 1977, Monthly Notices Roy.Astron.Soc. 179,499 CrossRefGoogle Scholar
Hutchings, J.B.,Cowley, A.P.,Redman, R.O. 1975, Astrophys.J. 201,404 Google Scholar
Kwok, S.,Purton, C.R.,FitzGerald, P.M. 1978, Astrophys.J. 219,L 125 CrossRefGoogle Scholar
Kwok, S.,Purton, C.R. 1979, Astrophys.J. 229,187 Google Scholar
Mammano, A.,Ciatti, F. 1975, Astron.Astrophys. 39,405 Google Scholar
Mammano, A.,Rosino, L.,Yildizdogdu, S. 1974, IAU Symposium N°67, page 401 Google Scholar
Merrill, P.W. 1950, Astrophys.J. 111,484 Google Scholar
Paczynsky, B.,Rudak, B. 1980, Astron.Astrophys. 82,349 Google Scholar
Sahade, J. 1965, IAU Colloquium on Variable Stars,Bamberg, page 140 Google Scholar
Sahade, J. 1975, 20th Liège Colloque d’Astrophysique, page 303 Google Scholar
Slovak, M.H.,Africano, J. 1978, Monthly Notices Roy.Astron.Soc. 185,591 Google Scholar
Swings, P. 1970, Spectroscopic Astrophysics, Univ.of Calif.Press,page 189 Google Scholar
Swings, P.,Struve, O. 1941, Astrophys.J. 93,356 Google Scholar
Thackeray, A.D. 1959, Monthly Notices Roy.Astron.Soc. 119,629 Google Scholar
Tutukov, A.V.,Yungel’son, L.R. 1976, Astrofizika 12,521 Google Scholar
Walker, A.R. 1977, Monthly Notices Roy.Astron.Soc. 179,587 CrossRefGoogle Scholar