Microlensing of close binary stars
arXiv:0810.2265 · doi:10.1111/j.1365-2966.2008.14074.x
Abstract
The gravity due to a multiple-mass system has a remarkable gravitational effect: the extreme magnification of background light sources along extended so-called caustic lines. This property has been the channel for some remarkable astrophysical discoveries over the past decade, including the detection and characterisation of extra-solar planets, the routine analysis of limb-darkening, and, in one case, limits set on the apparent shape of a star several kiloparsec distant. In this paper we investigate the properties of the microlensing of close binary star systems. We show that in some cases it is possible to detect flux from the Roche lobes of close binary stars. Such observations could constrain models of close binary stellar systems.
10 pages, accepted to MNRAS
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- Spitzer Parallax of OGLE-2015-BLG-0966: A Cold Neptune in the Galactic Disk
- Full orbital solution for the binary system in the northern Galactic disc microlensing event Gaia16aye
- Regions of Dynamical Stability for Discs and Planets in Binary Stars of the Solar Neighborhood
- Non-radially pulsating stars as microlensing sources