OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs (2017)
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http://hdl.handle.net/10092/14948ISSN
0004-637X1538-4357
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Abstract
© 2017. The American Astronomical Society. All rights reserved. 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 the detection of both finite-source and microlens-parallax effects, we are able to measure both the masses M 1 ∼ 0.05 M⊙ and M 2 ∼ 0.01 M⊙, and the distance D L ∼ 4.5 kpc, as well as the projected separation a ⊥ ∼ 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 of less than 1 au.
Citation
Han C, Udalski A, Sumi T, Gould A, Albrow MD, Chung SJ, Jung YK, Ryu YH, Shin IG, Yee JC, Zhu W, Cha SM, Kim SL, Kim DJ, Lee CU, Lee Y, Park BG, Soszyński I, Mróz P, Pietrukowicz P, Szymański MK, Skowron J, Poleski R, Kozłowski S, Ulaczyk K, Pawlak M, Abe F, Asakura Y, Bennett DP, Bond IA, Bhattacharya A, Donachie M, Freeman M, Fukui A, Hirao Y, Itow Y, Koshimoto N, Li MCA, Ling CH, Masuda K, Matsubara Y, Muraki Y, Nagakane M, Ohnishi K, Oyokawa H, Rattenbury NJ, Saito T, Sharan A, Sullivan DJ, Suzuki D, Tristram PJ, Yamada T, Yamada T, Yonehara A, Barry R (2017). OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs. Astrophysical Journal. 843(1). 59-59.This citation is automatically generated and may be unreliable. Use as a guide only.