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Journal Paper

전체
OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown Dwarfs SCI
  • 한정호;A. Udalski;T. Sumi;Andrew P. Gould;M. D. Albrow;정선주;Y. K. Jung;류윤현;I.-G. Shin;J. C. Yee;W. Zhu;차상목;김승리;김동진;이충욱;이용석;박병곤;I. Soszynski;P. Mroz;P. Pietrukowicz;M. K. Szymanski;J. Skowron;R. Poleski;S. Kozłowski;K. Ulaczyk;M. Pawlak;F. Abe;Y. Asakura;D. P. Bennett;I. A. Bond;A. Bhattacharya;M. Donachie;M. Freeman;A. Fukui;Y. Hirao;Y. Itow;N. Koshimoto;M. C. A. Li;C. H. Ling;K. Masuda;Y. Matsubara;Y. Muraki;M. Nagakane;K. Ohnishi;H. Oyokawa;N. J. Rattenbury;To. Saito;A. Sharan;D. J. Sullivan;D. Suzuki;P. J. Tristram;T. Yamada;T. Yamada;A. Yonehara;R. Barry
  • 2017-07-01
  • THE ASTROPHYSICAL JOURNAL 843 1 : 59-1~59-10
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 M1 ~ 0.05 M(soalr mass) and M2 ~ 0.01 M(soalr mass), and the distance DL ~ 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.