Computer Science – Performance
Scientific paper
Jan 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005esasp.576..599m&link_type=abstract
"Proceedings of the Gaia Symposium "The Three-Dimensional Universe with Gaia" (ESA SP-576). Held at the Observatoire de Paris-Me
Computer Science
Performance
Surveys Gaia, Stars Fundamental Parameters, Binaries Eclipsing, Binaries Spectroscopic
Scientific paper
The programme on eclipsing binaries we are carrying out in Asiago, is aimed at obtaining the orbits and physical parameters of double-lined A-K eclipsing binaries combining photometry from the Hipparcos-Tycho mission with 8500-8750 Å ground-based spectroscopy (obtained with the Asiago 1.82 m + Echelle + CCD), simulating the photometric+spectroscopic observations that should be provided by Gaia. Our study proves that Gaia is perfectly suited for an accurate study of the eclipsing binaries of solar type down to the limit of accurate epoch spectroscopy, obtaining a formal accuracy of ˜1-2% on fundamental parameters such as masses, radii and temperature ratio between the components. Our results can be considered as a lower limit to the Gaia performances because Gaia photometry will be far superior to the Tycho emulation adopted in our study, having more bands of higher diagnostic potential, better measurement accuracy and a larger number of epoch data.
Marrese Paola M.
Milone Eugene F.
Sordo Rosanna
Williams Michael D.
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