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| Paper: |
A PIONIER and Incisive Look at the Interacting Binary SS Lep |
| Volume: |
447, Evolution of Compact Binaries |
| Page: |
245 |
| Authors: |
Blind, N.; Boffin, H. M. J.; Berger, J.-P.; Lebouquin, J.-B.; Mérand, A. |
| Abstract: |
Symbiotic stars are excellent laboratories to study a broad
range of poorly understood physical processes, such as mass loss of red
giants, accretion onto compact objects, and evolution of nova-like outbursts.
As their evolution is strongly influenced by the mass transfer episodes,
understanding the history of these systems requires foremost to determine
which process is at play: Roche lobe overflow, stellar wind accretion, or
some more complex mixture of both. We report here an interferometric study
of the symbiotic system SS Leporis, performed with the unique PIONIER
instrument. By determining the binary orbit and revisiting the parameters
of the two stars, we show that the giant does not fill its Roche lobe, and
that the mass transfer most likely occurs via the accretion of an important
part of the giant's wind. |
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