Hyoun-Woo Kim
Korea Astronomy and Space Science Institute
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Publication
Featured researches published by Hyoun-Woo Kim.
The Astronomical Journal | 2018
Y. K. Jung; K.-H. Hwang; Yoon-Hyun Ryu; Andrew Gould; Cheongho Han; J. C. Yee; M. D. Albrow; Sun-Ju Chung; I.-G. Shin; Yossi Shvartzvald; W. Zang; Sang-Mok Cha; Dong-Jin Kim; Hyoun-Woo Kim; Seung-Lee Kim; Chung-Uk Lee; Dong-Joo Lee; Yong Seok Lee; Byeong-Gon Park; Richard W. Pogge
We present the analyses of two short-timescale
The Astronomical Journal | 2018
P. Mróz; Yoon-Hyun Ryu; J. Skowron; A. Udalski; A. Gould; M. K. Szymański; I. Soszyński; R. Poleski; P. Pietrukowicz; S. Kozłowski; M. Pawlak; K. Ulaczyk; M. D. Albrow; Sun-Ju Chung; Y. K. Jung; C. Han; K.-H. Hwang; I.-G. Shin; J. C. Yee; W. Zhu; Sang-Mok Cha; D.-J. Kim; Hyoun-Woo Kim; S.-L. Kim; C.-U. Lee; Dong-Joo Lee; Youngung Lee; B.-G. Park; Richard W. Pogge
(t_{\rm E} \sim 5~{\rm days})
The Astronomical Journal | 2017
Yoon-Hyun Ryu; A. Udalski; J. C. Yee; M. D. Albrow; Sun-Ju Chung; A. Gould; Cheongho Han; K.-H. Hwang; Y. K. Jung; I.-G. Shin; W. Zhu; Sang-Mok Cha; D.-J. Kim; Hyoun-Woo Kim; S.-L. Kim; C.-U. Lee; Youngung Lee; B.-G. Park; Richard W. Pogge; P. Pietrukowicz; S. Kozłowski; R. Poleski; J. Skowron; P. Mróz; M. K. Szymański; I. Soszyński; M. Pawlak; K. Ulaczyk
microlensing events, KMT-2016-BLG-1820 and KMT-2016-BLG-2142. In both light curves, the brief anomalies were clearly captured and densely covered by the Korea Microlensing Telescope Network survey. From these analyses, we find that both events have small Einstein radii of
Journal of Astronomy and Space Sciences | 2015
Wonyong Han; Min-Ji Jeong; Joh-Na Yoon; Hyoun-Woo Kim; Yonggii Kim; Chun-Hwey Kim
\theta_{\rm E} = 0.12~{\rm mas}
The Astrophysical Journal | 2018
Cheongho Han; Y. K. Jung; Yossi Shvartzvald; M. D. Albrow; Sun-Ju Chung; Andrew Gould; K.-H. Hwang; Doeon Kim; Chung-Uk Lee; Woong-Tae Kim; Hyoun-Woo Kim; Yoon-Hyun Ryu; I.-G. Shin; J. C. Yee; Chun-Hwey Kim; Sang-Mok Cha; Seung-Lee Kim; Dong-Jin Kim; Dong-Joo Lee; Yong Seok Lee; Byeong-Gon Park; Richard W. Pogge; Charles A. Beichman; Geoff Bryden; Sebastiano Calchi Novati; B. Scott Gaudi; C. B. Henderson; T. P. Matthew; Savannah R. Jacklin
, suggesting that the binary-lens systems are composed of very low-mass components and/or are located much closer to the lensed stars than to Earth. From Bayesian analyses, we find that these binaries have total system masses of
The Astronomical Journal | 2018
Cheongho Han; Y. Hirao; A. Udalski; C.-U. Lee; V. Bozza; A. Gould; F. Abe; R. K. Barry; I. A. Bond; D. P. Bennett; A. Bhattacharya; M. Donachie; P. Evans; A. Fukui; Y. Itow; Kohei Kawasaki; N. Koshimoto; M. C. A. Li; C. H. Ling; Y. Matsubara; Shota Miyazaki; H. Munakata; Y. Muraki; K. Ohnishi; C. Ranc; N. J. Rattenbury; T. Saito; A. Sharan; D. J. Sullivan; T. Sumi
0.043_{-0.018}^{+0.043}~M_{\odot}
The Astronomical Journal | 2018
Cheongho Han; I. A. Bond; Andrew Gould; M. D. Albrow; Sun-Ju Chung; Y. K. Jung; K.-H. Hwang; Chung-Uk Lee; Yoon-Hyun Ryu; I.-G. Shin; Yossi Shvartzvald; J. C. Yee; Sang-Mok Cha; Dong-Jin Kim; Hyoun-Woo Kim; Seung-Lee Kim; Dong-Joo Lee; Yong Seok Lee; Byeong-Gon Park; Richard W. Pogge; Chun-Hwey Kim; F. Abe; R. K. Barry; D. P. Bennett; A. Bhattacharya; M. Donachie; A. Fukui; Y. Hirao; Y. Itow; Kohei Kawasaki
and
The Astrophysical Journal | 2017
Tianshu Wang; W. Zhu; Shude Mao; I. A. Bond; A. Gould; A. Udalski; T. Sumi; V. Bozza; C. Ranc; A. Cassan; J. C. Yee; C. Han; F. Abe; Y. Asakura; R. K. Barry; D. P. Bennett; A. Bhattacharya; M. Donachie; P. Evans; A. Fukui; Y. Hirao; Y. Itow; K. Kawasaki; N. Koshimoto; M. C. A. Li; C. H. Ling; K. Masuda; Y. Matsubara; Shota Miyazaki; Y. Muraki
0.088_{-0.041}^{+0.120}~M_{\odot}
The Astronomical Journal | 2017
I.-G. Shin; A. Udalski; J. C. Yee; S. Calchi Novati; C. Han; J. Skowron; P. Mróz; I. Soszyński; R. Poleski; M. K. Szymański; S. Kozłowski; P. Pietrukowicz; K. Ulaczyk; M. Pawlak; M. D. Albrow; A. Gould; Sun-Ju Chung; K.-H. Hwang; Y. K. Jung; Yoon-Hyun Ryu; W. Zhu; Sang-Mok Cha; D.-J. Kim; Hyoun-Woo Kim; Seung-Lee Kim; C.-U. Lee; Youngung Lee; B.-G. Park; Richard W. Pogge; C. A. Beichman
, implying that they are well within the very-low-mass regime. The estimated lens-component masses indicate that the binary lenses consist of a giant-planet/brown-dwarf pair (KMT-2016-BLG-1820), and a dark/faint object pair (KMT-2016-BLG-2140) that are located near the deuterium-burning and hydrogen-burning mass limits, respectively. Both lens systems are likely to be in the Galactic disk with estimated distances of about
Journal of Astronomy and Space Sciences | 2016
Hyoun-Woo Kim; Chun-Hwey Kim; Mi-Hwa Song; Min-Ji Jeong; Hye-Young Kim
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