Arid
DOI10.3847/1538-3881/aa8fd1
OGLE-2016-BLG-0693LB: Probing the Brown Dwarf Desert with Microlensing
Ryu, Y. -H.1; Udalski, A.2; Yee, J. C.3; Albrow, M. D.4; Chung, S. -J.1,5; Gould, A.1,6,7; Han, C.8; Hwang, K. -H.1; Jung, Y. K.3; Shin, I. -G.3; Zhu, W.7; Cha, S. -M.9; Kim, D. -J.1; Kim, H. -W.1; Kim, S. -L.1,5; Lee, C. -U.1,5; Lee, Y.1,9; Park, B. -G.1,5; Pogge, R. W.7; Pietrukowicz, P.2; Kozlowski, S.2; Poleski, R.2,7; Skowron, J.2; Mroz, P.2; Szymanski, M. K.2; Soszynski, I.2; Pawlak, M.2; Ulaczyk, K.2
通讯作者Ryu, Y. -H.
来源期刊ASTRONOMICAL JOURNAL
ISSN0004-6256
EISSN1538-3881
出版年2017
卷号154期号:6
英文摘要

We present an analysis of microlensing event OGLE-2016-BLG-0693, based on the survey-only microlensing observations by the OGLE and KMTNet groups. In order to analyze the light curve, we consider the effects of parallax, orbital motion, and baseline slope, and also refine the result using a Galactic model prior. From the microlensing analysis, we find that the event is a binary composed of a low-mass brown dwarf (49(-18)(+20) Mj) companion and a K- or G-dwarf host, which lies at a distance of 5.0 +/- 0.6 kpc toward the Galactic bulge. The projected separation between the brown dwarf and its host star is less than similar to 5 au, thus it is likely that the brown dwarf companion is located in the brown dwarf desert.


英文关键词binaries: general brown dwarfs gravitational lensing: micro
类型Article
语种英语
国家South Korea ; Poland ; USA ; New Zealand ; Germany
收录类别SCI-E
WOS记录号WOS:000415961600005
WOS关键词GRAVITATIONAL LENSING EXPERIMENT ; HUBBLE-SPACE-TELESCOPE ; GALACTIC BULGE ; PLANETS ; PHOTOMETRY ; SYSTEMS ; MASS ; MULTIPLICITY ; FREQUENCY ; GIANT
WOS类目Astronomy & Astrophysics
WOS研究方向Astronomy & Astrophysics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/197585
作者单位1.Korea Astron & Space Sci Inst, Daejon 34055, South Korea;
2.Univ Warsaw Observ, Al Ujazdowskie 4, PL-00478 Warsaw, Poland;
3.Harvard Smithsonian Ctr Astrophys, 60 Garden St, Cambridge, MA 02138 USA;
4.Univ Canterbury, Dept Phys & Astron, Private Bag 4800, Christchurch 8020, New Zealand;
5.Korea Univ Sci & Technol, Astron & Space Sci Major, Daejeon 34113, South Korea;
6.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany;
7.Ohio State Univ, Dept Astron, 140 W 18th Ave, Columbus, OH 43210 USA;
8.Chungbuk Natl Univ, Dept Phys, Cheongju 28644, South Korea;
9.Kyung Hee Univ, Sch Space Res, Yongin 17104, Kyeonggi, South Korea
推荐引用方式
GB/T 7714
Ryu, Y. -H.,Udalski, A.,Yee, J. C.,et al. OGLE-2016-BLG-0693LB: Probing the Brown Dwarf Desert with Microlensing[J],2017,154(6).
APA Ryu, Y. -H..,Udalski, A..,Yee, J. C..,Albrow, M. D..,Chung, S. -J..,...&Ulaczyk, K..(2017).OGLE-2016-BLG-0693LB: Probing the Brown Dwarf Desert with Microlensing.ASTRONOMICAL JOURNAL,154(6).
MLA Ryu, Y. -H.,et al."OGLE-2016-BLG-0693LB: Probing the Brown Dwarf Desert with Microlensing".ASTRONOMICAL JOURNAL 154.6(2017).
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