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| Paper: |
Hot Subdwarf Stars as Tracers of Binary Stellar Evolution |
| Volume: |
447, Evolution of Compact Binaries |
| Page: |
171 |
| Authors: |
Østensen, R. H.; Van Winckel, H. |
| Abstract: |
Subdwarf B (sdB) stars are core-helium burning stars with exceptionally
thin hydrogen envelopes.
The mechanism by which they lose their envelopes has been controversial, but
the consensus is that various types of binary interactions are required
for their formation, making them an excellent testing ground for binary
star evolution.
Theory predicts that the majority of sdBs form through stable mass transfer
leading to long period binaries.
But to date, while close to 100 short period sdB binary stars have been
discovered, not a single post-Roche-lobe-overflow long-period system is
clearly established in the literature.
We will show some early results from our recent effort in detecting
long-period sdB systems, and discuss how space based photometric
observations can be used to detect more subdwarf binaries. |
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