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OGLE-2016-BLG-1469L: Microlensing Binary Composed of Brown DwarfsWe report the discovery of a binary composed of two brown dwarfs, based on the analysis of the micro lensing event OGLE-2016-BLG-1469. Thanks to the detection of both finite-source and micro lens-parallax effects, we are able to measure both the masses M(sub 1) ~ 0.05 Solar Mass and M(sub 2) ~ 0.01 Solar Mass, and the distance D(sub L) ~ 4.5 kpc, as well as the projected separation a(sub perpendicular) ~ 0.33 au. This is the third brown-dwarf binary detected using the micro lensing method, demonstrating the usefulness of micro lensing in detecting field brown-dwarf binaries with separations of less than 1 au.
Document ID
20190025307
Acquisition Source
Goddard Space Flight Center
Document Type
Reprint (Version printed in journal)
External Source(s)
doi:10.3847/1538-4357/aa740e
Authors
Han, C. (Chungbuk National Univ. Korea, Republic of)
Udalski, A. (Warsaw Univ. Observatory Warsaw, Poland)
Sumi, T. (Osaka University Toyonaka, Japan)
Gould, A. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Albrow, M. D. (University of Canterbury Christchurch, New Zealand)
Chung, S.-J. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Jung, Y. K. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Ryu, Y.-H. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Shin, I.-G. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Yee, J. C. (Harvard-Smithsonian Center for Astrophysics Cambridge, MA, United States)
Zhu, W. (Ohio State Univ. Columbus, OH, United States)
Cha, S.-M. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Kim, S.-L. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Kim, D.-J. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Lee, C.-U. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Lee, Y. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Park, B.-G. (Korea Astronomy and Space Science Inst. Korea, Republic of)
Soszyński, I. (Warsaw Univ. Observatory Warsaw, Poland)
Mróz, P. (Warsaw Univ. Observatory Warsaw, Poland)
Pietrukowicz, P. (Warsaw Univ. Observatory Warsaw, Poland)
Szymański, M. K. (Warsaw Univ. Observatory Warsaw, Poland)
Skowron, J. (Warsaw Univ. Observatory Warsaw, Poland)
Poleski, R. (Warsaw Univ. Observatory Warsaw, Poland)
Kozłowski, S. (Warsaw Univ. Observatory Warsaw, Poland)
Ulaczyk, K. (Warsaw Univ. Observatory Warsaw, Poland)
Pawlak, M. (Warsaw Univ. Observatory Warsaw, Poland)
Abe, F. (Nagoya University Nagoya, Japan)
Asakura, Y. (Nagoya University Nagoya, Japan)
Bennett, D. P. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bond, I. A. (Massey University Auckland (Albany), New Zealand)
Bhattacharya, A. (Notre Dame Univ. Notre Dame, IN, United States)
Donachie, M. (University of Auckland Auckland, New Zealand)
Freeman, M. (University of Auckland Auckland, New Zealand)
Fukui, A. (National Astronomical Observatory of Japan Tokyo, Japan)
Hirao, Y. (Osaka University Toyonaka, Japan)
Itow, Y. (Nagoya University Nagoya, Japan)
Koshimoto, N. (Osaka University Toyonaka, Japan)
Li, M. C. A. (University of Auckland Auckland, New Zealand)
Ling, C. H. (Massey University Auckland (Albany), New Zealand)
Masuda, K. (Nagoya University Nagoya, Japan)
Matsubara, Y. (Nagoya University Nagoya, Japan)
Muraki, Y. (Nagoya University Nagoya, Japan)
Nagakane, M. (Osaka University Toyonaka, Japan)
Ohnishi, K. (National Institute of Technology, Nagano College Nagano, Japan)
Oyokawa, H. (Nagoya University Nagoya, Japan)
Rattenbury, N. J. (University of Auckland Auckland, New Zealand)
Saito, To. (Tokyo Metropolitan College of Aeronautical Engineering (TMCAE) Tokyo, Japan)
Sharan, A. (University of Auckland Auckland, New Zealand)
Sullivan, D. J. (Victoria Univ. Wellington, New Zealand)
Suzuki, D. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Tristram, P. J. (Mount John University Observatory Tepako, New Zealand)
Yamada, T. (Osaka University Toyonaka, Japan)
Yamada, T. (Mount John University Observatory Tepako, New Zealand)
Yonehara, A. (Notre Dame Univ. Notre Dame, IN, United States)
Barry, R. (NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
May 23, 2019
Publication Date
July 3, 2017
Publication Information
Publication: The Astrophysical Journal
Publisher: The American Astronomical Society
Volume: 843
Issue: 1
ISSN: 0004-637X
e-ISSN: 1538-4357
Subject Category
Astrophysics
Report/Patent Number
GSFC-E-DAA-TN64792
Report Number: GSFC-E-DAA-TN64792
ISSN: 0004-637X
E-ISSN: 1538-4357
Funding Number(s)
CONTRACT_GRANT: JP23340064
CONTRACT_GRANT: 80GSFC17M0002
CONTRACT_GRANT: JP16H06287
CONTRACT_GRANT: JP26247023
CONTRACT_GRANT: JP15H00781
CONTRACT_GRANT: MAESTRO 2014/14/A/ST9/00121
CONTRACT_GRANT: JP24253004
CONTRACT_GRANT: 2017R1A4A1015178
CONTRACT_GRANT: AST-1516842
Distribution Limits
Public
Copyright
Other
Keywords
OGLE-2016-BLG-1469

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