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RR Telescopii

Published online by Cambridge University Press:  12 April 2016

Patricia A. Whitelock ,
R.M. Catchpole  and
M. W. Feast
Patricia A. Whitelock
Affiliation:
South African Astronomical Observatory
R.M. Catchpole
Affiliation:
South African Astronomical Observatory
M. W. Feast
Affiliation:
South African Astronomical Observatory

Extract

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In 1948 the South African amateur astronomers de Kock and Kirchhoff were the first to notice that RR Tel had brightened to 7th magnitude. Subsequent examination of the Harvard Patrol plates showed that it had in fact reached a maximum in 1944 after rapidly brightening 7 magnitudes (Mayall, 1949). Prior to 1944 the object showed variations with a period of 387 days and an amplitude of up to 2 magnitudes in the blue. After the outburst the spectrum evolved in a manner characteristic of very slow novae: an F5 supergiant absorption spectrum gave way to strong permitted and forbidden emission lines. The ionization levels characterising the emission increased with time. The spectral development has been extensively studied and has been well summarised for the period up to 1973 in the Thackeray's (1977) monograph on the subject.

Type
Session II – Discussion on Individual Stars
Information
International Astronomical Union Colloquium , Volume 70: The Nature of Symbiotic Stars , 1982 , pp. 215 - 216
Copyright
Copyright © Reidel 1982

References

Allen, D.A., Beattie, D.H., Lee, T.J., Stewart, J.M., Williams, P.M.: 1978, Mon. Not. R. astr. Soc. 182, 57PGoogle Scholar
Bath, G.T.: 1977, Mon. Not. R. astr. Soc. 178, 203 Google Scholar
Feast, M.W., Glass, I.S.: 1974, Mon. Not. R. astr. Soc. 167, 81 Google Scholar
Feast, M.W., Robertson, B.R.C., Catchpole, R.M.: 1977, Mon. Not. R. astr. Soc. 122, 499 CrossRefGoogle Scholar
Mayall, M.W.: 1949, Harvard Bull. 919, 5 Google Scholar
Penston, M.V., Benvenuti, P., Cassatella, A., Heck, A., Selvelli, P., Beekmans, F., Macchetto, F., Ponz, D., Jordan, C., Cramer, N., Rufener, F., Manfroid, J.: 1981, Mon. Not. R. astr. Soc. in pressGoogle Scholar
Thackeray, A.D.: 1977, Mem. R. astr. Soc. 83, 1 Google Scholar
Webster, B.L.: 1974, IAU Symposium No. 59, 123 Google Scholar