The semi-detached binary system RZ draconis

Details The semi-detached binary system RZ draconis The semi-detached binary system RZ draconis

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982cha%26a...6..199k&link_type=abstract

Chinese Astronomy and Astrophysics, Volume 6, Issue 3, p. 199-204.

Astronomy and Astrophysics

Astrophysics

1

Scientific paper

The 1978 photoeletric observations of the late type close binary RZ Dra were reanalyzed with the Wilson and Devinney approach. Photometric parameters were determined (in Tab. 1.). The system is found to be semi-detached where the less massive component fills its Roche surface, whereas the other component almost does so. The configuration of the system is shown in Fig. 1. The absolute dimensions of the system are found to be M1 = 0.61Msolar, M2 = 0.41Msolar R1 = 1.15R,¯and R2 = 0.96Rsolar. Both components appear to be overluminous and oversized for their masses and spectral types. Its evolutionary stage is also discussed. The variability in the brightness of the primary mlnimum(Fig. 4) indicates mass loss from the vicinity of L2, which would be mainly responsible for the long-term decrease in its period.

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