The infrared variability and nature of symbiotic stars. II - RR Tel

Details The infrared variability and nature of symbiotic stars. II - RR Tel The infrared variability and nature of symbiotic stars. II - RR Tel

Mar 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983mnras.202..951f&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 202, Mar. 1983, p. 951-960.

Astronomy and Astrophysics

Astronomy

43

Binary Stars, Infrared Astronomy, Infrared Stars, Spectrophotometry, Stellar Spectra, Blue Stars, Late Stars, Novae, Stellar Luminosity, Variability

Scientific paper

The presence of a cool Mira-like component having a period of 387 days is established for the very slow nova symbiotic system RR Tel in the 1972-1981 period, using JHKL IR photometry. Single star models for the system are suggested to be unlikely in view of evidence for a similar periodicity in the photographic region prior to the 1944 outburst. These results are consistent with the presence of a constant period and mean luminosity Mira at all times. If the Mira component is normal, then the IR excess increases toward Mira minimum and may be interpreted as a partial heating of the dust by the blue component and/or ionized gas in the system. The evidence indicates that all slow novae contain cool giant or supergiant components, so that the systems must be of great physical size.

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