Hostname: page-component-cd9895bd7-p9bg8 Total loading time: 0 Render date: 2024-12-25T16:12:38.390Z Has data issue: false hasContentIssue false
  • English
  • Français

The RCB Stars and their Circumstellar Material

Published online by Cambridge University Press:  12 April 2016

M.W. Feast
M.W. Feast*
Affiliation:
South African Astronomical Observatory P O Box 9 Observatory 7935 Cape SouthAfrica

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.

RCB stars are surrounded by circumstellar dust and gas moving radially outwards at ~200 km/sec. The circumstellar shell is made up of discrete puffs of matter, a typical puff occupying an area ~0.03 of a complete shell. On the average puffs are ejected about once every 40 days (comparable with the known pulsation periods of RCB stars). The reddening law of the dust indicates that it is composed of small carbon particles (radii ~100A). The flux from the shell at L typically varies by 1 to 3 mags over periods of 1000-2000 days. The average mass loss rate is ~10−6MO/yr.

Type
IV Cool Hydrogen Deficient Stars
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 151 - 166
Copyright
Copyright © Reidel 1986

References

Alexander, J.B., Andrews, P.J., Catchpole, R.M., Feast, M.W., Lloyd Evans, T., Menzies, J.W., Wisse, P.N.J. & Wisse, M., 1972. Mon. Not. R. astr. Soc., 158, 305.CrossRefGoogle Scholar
Ashok, N.M., Chandrasekhar, T. & Bhatty, H.C., 1984. Inf. Bull. Var. Stars, 2510.Google Scholar
Bateson, F.M., 1972. Inf. Bull. Var. Stars, 661.Google Scholar
Berman, L., 1935. Astrophys. J., 81, 369.CrossRefGoogle Scholar
Bidelman, W.P., 1953. Astrophys., J. 117, 25.CrossRefGoogle Scholar
Böhme, D., 1984. Inf. Bull. Var. Stars, 2646.Google Scholar
Borghesi, A., Bussoletti, E. & Colangeli, L., 1985. Astr. Astrophys., 142, 225.Google Scholar
Catchpole, R.M. & Glass, I.S., 1974. Mon. Not. R. astr. Soc., 169, 69p.CrossRefGoogle Scholar
Draine, B.T., 1985. Astrophys. J. Suppl., 57, 587.CrossRefGoogle Scholar
Eggen, O.J., 1985. Preprint.Google Scholar
Espin, T.E., 1890. Mon. Not. R. astr. Soc., 51, 11.CrossRefGoogle Scholar
Espin, T.E., 1900. Astr. Nachr., 152, 139.CrossRefGoogle Scholar
Espin, T.E., 1894. Astr. Nachr., 134, 127.Google Scholar
Feast, M.W. & Glass, I.S., 1973. Mon. Not. R. astr. Soc., 161, 293.CrossRefGoogle Scholar
Feast, M.W., 1975. Variable Stars and Stellar Evolution, IAU Symp. 67, p. 129, eds. Sherwood, V.E. and Plaut, L., Reidel, Dordrecht.CrossRefGoogle Scholar
Feast, M.W., 1979. Changing Trends in Variable Star Research, IAU Coll. 46, p. 246, eds. Bateson, F.M., University of Waikato, New Zealand.Google Scholar
Feast, M.W., Catchpole, R.M., Lloyd Evans, T., Robertson, B.S.C., Dean, J.F. & Bywater, R.A., 1977. Mon. Not. R. astr. Soc., 178, 415.CrossRefGoogle Scholar
Feast, M.W., Whitelock, P.A., Catchpole, R.M., Roberts, G. & Overbeek, M.D., 1984. Mon. Not. R. astr. Soc., 211, 331.CrossRefGoogle Scholar
Fernie, J.D., Sherwood, V. & Du Puy, D.L., 1972. Astrophys. J., 172, 383.CrossRefGoogle Scholar
Forrest, W.J., Gillett, F.C. & Stein, W.A., 1972. Astrophys. J., 178, L129.CrossRefGoogle Scholar
Glass, I.S., 1978. Mon. Not. R. astr. Soc, 185, 23.CrossRefGoogle Scholar
Griffin, R., 1985. Private communication.Google Scholar
Hartmann, L. & Apruzese, J.P., 1976. Astrophys. J., 203, 610.CrossRefGoogle Scholar
Holm, A.V., Wu, C.C. & Doherty, L.R., 1982. Publs. astr. Soc. Pacif., 94, 548.CrossRefGoogle Scholar
Howarth, I.D., 1976. Publ. Var. Star Sec. R. astr. Soc. N.Z., No. 4, 4.Google Scholar
Howarth, I.D., 1977. Acta. Astron., 27, 65.Google Scholar
Kilkenny, D. & Flanagan, C., 1983. Mon. Not. R. astr. Soc., 203, 19.CrossRefGoogle Scholar
Kilkenny, D., 1982. Mon. Not. R. astr. Soc., 200, 1019.CrossRefGoogle Scholar
Kilkenny, D., 1983. Mon. Not. R. astr. Soc., 205, 907.CrossRefGoogle Scholar
Kilkenny, D. & Whittet, D.C.B., 1984. Mon. Not. R. astr. Soc., 208, 25.CrossRefGoogle Scholar
Kilkenny, D., Coulson, I.M., Laing, J.D., Spencer Jones, J. & Engelbrecht, C., 1985. Sth. Afr. astr. Obs. Circ., No. 9, 87.Google Scholar
Lloyd Evans, T., 1985. Mon. Not. R. astr. Soc. In press.Google Scholar
Ludendorff, H., 1908. Publ. Astrophys. Obs. Potsdam, 19, No. 57.Google Scholar
Menzies, J.W., 1986. This meeting.Google Scholar
Payne, C.H., 1928. Harvard Bull., 861, 11.Google Scholar
Payne-Gaposchkin, C., 1936. Harvard Bull., 903, 35.Google Scholar
Payne-Gaposchkin, C., 1963. Astrophys. J., 138, 320.CrossRefGoogle Scholar
Pugach, A.F., 1977. Inf. Bull. Var. Stars, 1277.Google Scholar
Querci, M. & Querci, F., 1978. Astr. Astrophys., 70, L45.Google Scholar
Rao, N.K., Ashok, N.M. & Kulkarni, P.V., 1980. J. Astrophys. Astr., 1, 71 Google Scholar
Saio, H. & Wheeler, J.C., 1985. Astrophys. J., 295, 38.CrossRefGoogle Scholar
Schönberner, D., 1975. Astron. Astrophys., 44, 383.Google Scholar
Schönberner, D., 1977. Astr. Astrophys., 57, 437.Google Scholar
Spite, F. & Spite, M., 1979. Astr. AstropRys., 80, 61.Google Scholar
Sterne, T.E., 1935. Harvard Bull. 896, 17.Google Scholar
Strecker, D.W., 1975. Astron.J., 80, 451.CrossRefGoogle Scholar
Walker, H., 1985. In press.Google Scholar
Wdowiak, T.J., 1975. Astrophys. J., 198, L139.CrossRefGoogle Scholar
Wickramasinghe, N.C., 1973. Light Scattering Functions for Small Particles with Application in Astronomy, Adam Hilger, London.Google Scholar
Zirin, H., 1982. Astrophys. J., 260, 655.Google Scholar