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| Paper: |
Are Double Periodic Variables Progenitors of Some Be Stars? |
| Volume: |
464, Circumstellar Dynamics at High Resolution |
| Page: |
213 |
| Authors: |
Mennickent, R. |
| Abstract: |
The phenomenon of Double Periodic Variables is summarized, with special
attention to their photometric and spectroscopic fingerprints. In all
well-studied cases the orbital light curve can be modeled with a B-type star
surrounded by a dense disk-like envelope and a cooler donor (spectral types B,
A, F, G) filling its Roche lobe. The study of V393 Scorpii provides clues
on the evolutionary stage of these variables, and suggests that a bi-polar
wind is responsible for the long-cycle variability. It is argued that Double
Periodic Variables could be progenitors of some Be stars. |
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