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| Paper: |
SB2 and Eclipsing Binaries with GAIA and RAVE |
| Volume: |
318, Spectroscopically and Spatially Resolving the Components of Close Binary Stars |
| Page: |
422 |
| Authors: |
Munari, U.; Zwitter, T.; Milone, E.F. |
| Abstract: |
The expected performance of the GAIA satellite on eclipsing binaries is reviewed on the basis of (a) combined Hipparcos and ground-based observations mimicking the GAIA data harvest, and (b) accurate simulations using the latest instrument model. It is found that for a large majority of the 16 000 SB2 eclipsing binaries that GAIA will discover at magnitudes V ≤13, the orbital solutions and physical parameters will be derived with formal accuracies better than 2%. For the same stars the GAIA parallax errors will be ∼5 micro-arcsec, i.e. an error of 0.5% at 1 kpc, which will allow iterative refinement of the parameters and physics used in orbital modeling. The detectability of SB2 binaries by the current spectral survey RAVE is discussed. It is found that all F-to-M SB2 binaries showing a velocity separation ≥35 km sec-1 and a luminosity ratio ≥0.5 will be recognized as such. |
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