Companions to sdB binaries - Degenerate or non-degenerate?
UNSPECIFIED (2004) Companions to sdB binaries - Degenerate or non-degenerate? In: Meeting on sdB Stars, Keele Univ, Staffordshire, ENGLAND, JUN 16-20, 2003. Published in: ASTROPHYSICS AND SPACE SCIENCE, 291 (3). pp. 307-314.Full text not available from this repository.
We report the results of an on-going programme to collect lightcurves for EHB binaries with orbital periods P less than or similar to 1 d. Degenerate and non-degenerate companions are clearly distinguished by the presence or absence of a reflection effect in these binaries. The amplitude of the reflection effect can be combined with other data to provide an estimate of the mass of the companion star. We find that the fraction of sdB binaries in our sample which have non-degenerate companions is 0.08 +/- 0.06 (1-sigma error). These non-degenerate companions have very low masses (less than or similar to0.1M(circle dot)). This property is not predicted by existing population synthesis models.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||Q Science > QB Astronomy|
|Journal or Publication Title:||ASTROPHYSICS AND SPACE SCIENCE|
|Publisher:||KLUWER ACADEMIC PUBL|
|Number of Pages:||8|
|Page Range:||pp. 307-314|
|Title of Event:||Meeting on sdB Stars|
|Location of Event:||Keele Univ, Staffordshire, ENGLAND|
|Date(s) of Event:||JUN 16-20, 2003|
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