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| Paper: |
Research on the Orbital Period of Massive Binaries |
| Volume: |
451, 9th Pacific Rim Conference on Stellar Astrophysics |
| Page: |
71 |
| Authors: |
Zhao, E.; Qain, S. |
| Abstract: |
Massive binary is the kind of binary, whose spectral type is earlier
than B5. Research on massive binary plays an important role in the
mass and angular momentum transfer or loss between the components,
and the evolution of binary. Some massive binaries are observed and
analyzed, including O-type binary LY Aur, B-type contact binary RZ
Pyx and B-type semi-detached binary AI Cru. It is found that all of
their periods have a long-term increasing, which indicates that the
system is undergoing a Case A slow mass transfer stage on the
nuclear time-scale of the secondary. Moreover, analysis show a
cyclic change of orbital period, which can be explained by the
light-travel effect time of the third body. |
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