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Sun-Ju Chung
Researcher at Korea Astronomy and Space Science Institute
Publications - 20
Citations - 289
Sun-Ju Chung is an academic researcher from Korea Astronomy and Space Science Institute. The author has contributed to research in topics: Gravitational microlensing & Planet. The author has an hindex of 10, co-authored 20 publications receiving 219 citations. Previous affiliations of Sun-Ju Chung include Korea University of Science and Technology & Ohio State University.
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Journal ArticleDOI
Two new free-floating or wide-orbit planets from microlensing
Przemek Mróz,Andrzej Udalski,David P. Bennett,Yoon-Hyun Ryu,Takahiro Sumi,Yossi Shvartzvald,Jan Skowron,Radosław Poleski,Paweł Pietrukowicz,Szymon Kozłowski,Michał K. Szymański,Łukasz Wyrzykowski,Igor Soszyński,Krzysztof Ulaczyk,K. A. Rybicki,Patryk Iwanek,Michael D. Albrow,Sun-Ju Chung,Andrew Gould,C. Han,K. H. Hwang,Youn Kil Jung,In-Gu Shin,Jennifer C. Yee,W. Zang,Sang-Mok Cha,Dong-Jin Kim,Hyoun-Woo Kim,Seung-Lee Kim,Chung-Uk Lee,D. J. Lee,Yongseok Lee,B. G. Park,Richard W. Pogge,Fumio Abe,Richard Barry,Aparna Bhattacharya,Ian A. Bond,Martin Donachie,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,K. Kawasaki,Iona Kondo,Naoki Koshimoto,Man Cheung Alex Li,Yutaka Matsubara,Yasushi Muraki,S. Miyazaki,Masayuki Nagakane,Clément Ranc,Nicholas J. Rattenbury,Haruno Suematsu,Denis J. Sullivan,Daisuke Suzuki,Paul J. Tristram,Atsunori Yonehara,D. Maoz,Shai Kaspi,M. Friedmann +59 more
TL;DR: In this article, the authors presented the discovery and characterization of two ultra-short microlensing events identified in data from the Optical Gravitational Lensing Experiment (OGLE) survey, which may have been caused by free-floating or wide-orbit planets.
Journal ArticleDOI
KMT-2017-BLG-0165Lb: A Super-Neptune-mass Planet Orbiting a Sun-like Host Star
Youn Kil Jung,Andrew Gould,W. Zang,K. H. Hwang,Yoon-Hyun Ryu,C. Han,Jennifer C. Yee,Michael D. Albrow,Sun-Ju Chung,In-Gu Shin,Yossi Shvartzvald,Wei Zhu,Sang-Mok Cha,Dong-Jin Kim,Hyoun-Woo Kim,Seung-Lee Kim,Chung-Uk Lee,D. J. Lee,Yongseok Lee,B. G. Park,Richard W. Pogge,Matthew T. Penny,Shude Mao,Pascal Fouqué,Tianshu Wang +24 more
TL;DR: In this article, the authors reported the discovery of a low-mass-ratio planet (q = 1.3 × 10^(−4)), i.e., 2.5 times higher than the Neptune/Sun ratio.
Journal ArticleDOI
OGLE-2018-BLG-1700L: Microlensing Planet in Binary Stellar System
Cheongho Han,Chung-Uk Lee,Andrzej Udalski,Andrew Gould,Andrew Gould,Ian A. Bond,Michael D. Albrow,Sun-Ju Chung,Sun-Ju Chung,Kyu-Ha Hwang,Youn Kil Jung,Yoon-Hyun Ryu,In-Gu Shin,Yossi Shvartzvald,Jennifer C. Yee,Weicheng Zang,Sang-Mok Cha,Sang-Mok Cha,Dong-Jin Kim,Hyoun-Woo Kim,Seung-Lee Kim,Seung-Lee Kim,Dong-Joo Lee,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,Richard W. Pogge,M. James Jee,M. James Jee,Doeon Kim,Przemek Mróz,Michał K. Szymański,Jan Skowron,Radek Poleski,Igor Soszyński,Paweł Pietrukowicz,Szymon Kozłowski,Krzysztof Ulaczyk,Krzysztof A. Rybicki,Patryk Iwanek,M. Wrona,Fumio Abe,Richard K. Barry,David P. Bennett,David P. Bennett,Aparna Bhattacharya,Aparna Bhattacharya,Martin Donachie,Hirosane Fujii,Akihiko Fukui,Akihiko Fukui,Yoshitaka Itow,Yuki Hirao,Yuhei Kamei,Iona Kondo,Naoki Koshimoto,Man Cheung Alex Li,Yutaka Matsubara,Yasushi Muraki,Shota Miyazaki,Masayuki Nagakane,Clément Ranc,Nicholas J. Rattenbury,Haruno Suematsu,Denis J. Sullivan,Takahiro Sumi,Daisuke Suzuki,Paul J. Tristram,T. Yamakawa,Atsunori Yonehara +70 more
TL;DR: In this paper, the authors reported a triple nature of the lens from the fact that the anomaly pattern can be decomposed into two parts produced by two binary-lens events.
Journal ArticleDOI
A free-floating or wide-orbit planet in the microlensing event OGLE-2019-BLG-0551
Przemek Mróz,Radosław Poleski,C. Han,Andrzej Udalski,Andrew Gould,Michał K. Szymański,Igor Soszyński,P. Pietrukowicz,S. Kozlowski,Jan Skowron,K. Ulaczyk,M. Gromadzki,K. A. Rybicki,Patryk Iwanek,M. Wrona,Michael D. Albrow,Sun-Ju Chung,K.-H. Hwang,Yoon-Hyun Ryu,Y. K. Jung,In-Gu Shin,Yossi Shvartzvald,Jennifer C. Yee,W. Zang,Sang-Mok Cha,Doeon Kim,H.-W. Kim,Shinyoung Kim,C.-U. Lee,Duk-Hang Lee,Yongseok Lee,Byeong-Gon Park,Richard W. Pogge +32 more
TL;DR: In this article, the authors reported the discovery of another strong free-floating planet candidate, which was found from the analysis of the OGLE-2019-BLG-0551 microlensing event.
Journal ArticleDOI
Spitzer Parallax of OGLE-2018-BLG-0596: A Low-mass-ratio Planet around an M Dwarf
Youn Kil Jung,Andrew Gould,Andrzej Udalski,Takahiro Sumi,Jennifer C. Yee,Yossi Shvartzvald,W. Zang,C. Han,Michael D. Albrow,Sun-Ju Chung,K. H. Hwang,Yoon-Hyun Ryu,In-Gu Shin,Wei Zhu,Sang-Mok Cha,Dong-Jin Kim,Hyoun-Woo Kim,Seung-Lee Kim,Chung-Uk Lee,D. J. Lee,Yongseok Lee,B. G. Park,Richard W. Pogge,Przemek Mróz,Michał K. Szymański,Jan Skowron,R. Poleski,Igor Soszyński,Paweł Pietrukowicz,Szymon Kozłowski,K. Ulaczyk,K. A. Rybicki,Patryk Iwanek,Marcin Wrona,Charles A. Beichman,Geoffery Bryden,Sebastiano Calchi Novati,Sean Carey,B. Scott Gaudi,Calen B. Henderson,Spitzer Team,Fumio Abe,Richard Barry,David P. Bennett,Ian A. Bond,Aparna Bhattacharya,Martin Donachie,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,Iona Kondo,Naoki Koshimoto,Man Cheung Alex Li,Yutaka Matsubara,S. Miyazaki,Yasushi Muraki,Masayuki Nagakane,Clément Ranc,Nicholas J. Rattenbury,Haruno Suematsu,Denis J. Sullivan,Daisuke Suzuki,Paul J. Tristram,Atsunori Yonehara,Savannah Jacklin,Matthew T. Penny,Keivan G. Stassun,Pascal Fouqué,Shude Mao,Tianshu Wang +69 more
TL;DR: In this paper, the authors reported the discovery of a Spitzer microlensing planet OGLE-2018-BLG-0596Lb, with preferred planet-host mass ratio q ~ 2 × 10^(−4).