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OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs
- Publication Year :
- 2017
-
Abstract
- We report the discovery of a binary composed of two brown dwarfs, based on the analysis of the microlensing event OGLE-2016-BLG-1469. Thanks to detection of both finite-source and microlens-parallax effects, we are able to measure both the masses $M_1\sim 0.05\ M_\odot$, $M_2\sim 0.01\ M_\odot$, and distance $D_{\rm L} \sim 4.5$ kpc, as well as the projected separation $a_\perp \sim 0.33$ au. This is the third brown-dwarf binary detected using the microlensing method, demonstrating the usefulness of microlensing in detecting field brown-dwarf binaries with separations less than 1 au.<br />Comment: 8 pages, 8 figures
Details
- Database :
- arXiv
- Publication Type :
- Report
- Accession number :
- edsarx.1705.05553
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.3847/1538-4357/aa740e