Long Term Trends in the 3.5μ Light Curve of RX Puppis

  • Patricia A. Whitelock
  • R. M. Catchpole
Conference paper
Part of the Astrophysics and Space Science Library book series (ASSL, volume 95)


SAAO photometry of RX Pup at 3.5μ between 1972 and 1981 shows a very well defined period of 580 days with an amplitude of 0.35 mag, which is attributed to a Mira variable component. The infrared variability of RX Pup was demonstrated by Feast, Robertson and Catchpole (1977) who also pointed out that the infrared colours were indicative of the presence of a Mira variable with a dust excess. Further evidence for the Mira comes from the observations of H2O in the infrared spectrum by Barton, Phillips and Allen (1979).


Infrared Spectrum Light Curve Secular Variation Term Variation Astronomical Observatory 
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  1. Barton, J.R., Phillips, B.A., Allen, D.A.: 1979, Mon. Not. R. astr. Soc. 187, 813.ADSGoogle Scholar
  2. Feast, M.W., Robertson, B.R.C., Catchpole, R.: 1977, Mon. Not. R. astr. Soc. 179, 499.ADSGoogle Scholar

Copyright information

© D. Reidel Publishing Company, Dordrecht, Holland 1982

Authors and Affiliations

  • Patricia A. Whitelock
    • 1
  • R. M. Catchpole
    • 1
  1. 1.South African Astronomical ObservatoryUSA

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