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Astrophysics and Space Science

, Volume 209, Issue 2, pp 273–283 | Cite as

The interaction between the secondary and the common convective envelope in a contact binary

  • Wang Jianmin 
Article

Abstract

It has been suggested that a contact system almost certainly cannot exist in static equilibrium undergoing periodic thermal relaxation oscillation. The energy transfer in a common convective envelope (CCE) makes the secondary have a complex structure, so the interaction between the secondary and CCE may play an important role in the structure and evolution of the contact system. The present paper tests the TRO theory and investigates this interaction with polytropic stellar model from the observational datum of 22 contact systems directly. It shows that the A-type systems are expanding with a velocity of 25.04 m yr−1, and the W-type systems are contracting at velocity of 3.10 m yr−1 by the calculations about these contact systems. Also, we calculate the ratio of energy transfer and the interaction coefficient for them. The HS (hot secondary) model is supported by our calculations. These results may help to understand the TRO theory and the W-phenomenon.

Keywords

Static Equilibrium Energy Transfer Observational Data Interaction Coefficient Thermal Relaxation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 1993

Authors and Affiliations

  • Wang Jianmin 
    • 1
  1. 1.Center for AstrophysicsUniversity of Science and Technology of ChinaHefei, AnhuiChina

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