EXPECTED LARGE SYNOPTIC SURVEY TELESCOPE (LSST) YIELD OF ECLIPSING BINARY STARS

In this paper, we estimate the Large Synoptic Survey Telescope ( LSST) yield of eclipsing binary stars, which will survey similar to 20,000 deg(2) of the southern sky during a period of 10 years in six photometric passbands to r similar to 24.5. We generate a set of 10,000 eclipsing binary light curves sampled to the LSST time cadence across the whole sky, with added noise as a function of apparent magnitude. This set is passed to the analysis-of-variance period finder to assess the recoverability rate for the periods, and the successfully phased light curves are passed to the artificial-intelligence-based pipeline ebai to assess the recoverability rate in terms of the eclipsing binaries' physical and geometric parameters. We find that, out of similar to 24 million eclipsing binaries observed by LSST with a signal-to-noise ratio >10 in mission lifetime, similar to 28% or 6.7 million can be fully characterized by the pipeline. Of those, similar to 25% or 1.7 million will be double-lined binaries, a true treasure trove for stellar astrophysics.