T
T. Yamada
Researcher at Osaka University
Publications - 25
Citations - 428
T. Yamada is an academic researcher from Osaka University. The author has contributed to research in topics: Gravitational microlensing & Light curve. The author has an hindex of 12, co-authored 25 publications receiving 399 citations.
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Journal ArticleDOI
The lowest mass ratio planetary microlens: OGLE 2016–BLG–1195Lb
Ian A. Bond,David P. Bennett,Takahiro Sumi,Andrzej Udalski,Daisuke Suzuki,Nicholas J. Rattenbury,Valerio Bozza,Valerio Bozza,Naoki Koshimoto,Fumio Abe,Yuichiro Asakura,Richard K. Barry,Aparna Bhattacharya,Aparna Bhattacharya,Martin Donachie,Phil Evans,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,Man Cheung Alex Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,Masayuki Nagakane,K. Ohnishi,Clément Ranc,To. Saito,A. Sharan,Denis J. Sullivan,Paul J. Tristram,T. Yamada,Atsunori Yonehara,Jan Skowron,Michał K. Szymański,Radosław Poleski,Radosław Poleski,P. Mróz,Igor Soszyński,P. Pietrukowicz,S. Kozlowski,Krzysztof Ulaczyk,Krzysztof Ulaczyk,Michał Pawlak +43 more
TL;DR: In this paper, the authors reported the discovery of the lowest mass ratio exoplanet to be found by the microlensing method in the light curve of the event OGLE 2016 -BLG-1195.
Journal ArticleDOI
OGLE-2016-BLG-1190Lb: First Spitzer Bulge Planet Lies Near the Planet/Brown-Dwarf Boundary
Yoon-Hyun Ryu,Jennifer C. Yee,Andrzej Udalski,Ian A. Bond,Yossi Shvartzvald,W. Zang,R. Figuera Jaimes,U. G. Jørgensen,Wei Zhu,Chelsea X. Huang,Y. K. Jung,Michael D. Albrow,Sun-Ju Chung,Andrew Gould,C. Han,K.-H. Hwang,In-Gu Shin,Sang-Mok Cha,D.-J. Kim,H.-W. Kim,S. L. Kim,C.-U. Lee,Duk-Hang Lee,Y. Lee,Byeong-Gon Park,R. W. Pogge,S. Calchi Novati,Sean Carey,Calen B. Henderson,C. A. Beichman,B. S. Gaudi,P. Mróz,R. Poleski,Jan Skowron,Michał K. Szymański,Igor Soszyński,S. Kozlowski,P. Pietrukowicz,K. Ulaczyk,Michał Pawlak,Fumio Abe,Yuichiro Asakura,Richard K. Barry,David P. Bennett,A. Bhattacharya,M. Donachie,P. A. Evans,A. Fukui,Y. Hirao,Yoshitaka Itow,K. Kawasaki,N. Koshimoto,M. C. A. Li,C. H. Ling,Kimiaki Masuda,Y. Matsubara,Satoshi Miyazaki,Y. Muraki,M. Nagakane,K. Ohnishi,C. Ranc,N. J. Rattenbury,To. Saito,A. Sharan,Denis J. Sullivan,Takahiro Sumi,Daisuke Suzuki,P. J. Tristram,T. Yamada,Atsunori Yonehara,G. Bryden,Steve B. Howell,Savannah Jacklin,M. T. Penny,Shude Mao,Pascal Fouqué,Tianshu Wang,R. A. Street,Yiannis Tsapras,M. Hundertmark,Etienne Bachelet,Martin Dominik,Z. Li,Simon Cross,Arnaud Cassan,Keith Horne,R. W. Schmidt,Joachim Wambsganss,S. K. Ment,D. Maoz,Colin Snodgrass,Iain A. Steele,V. Bozza,Martin Burgdorf,Simona Ciceri,Giuseppe D'Ago,D. F. Evans,Tobias C. Hinse,Eamonn Kerins,Rosita Kokotanekova,P. Longa,J. MacKenzie,A. Popovas,M. Rabus,Sohrab Rahvar,S. Sejadian,J. Skottfelt,John Southworth,C. von Essen +108 more
TL;DR: The OGLE-2016-BLG-1190Lb is the first Spitzer microlensing planet in the Galactic bulge/bar, an assignation that can be confirmed by two epochs of high-resolution imaging of the combined source-lens baseline object.
Journal ArticleDOI
An Isolated Microlens Observed from K2, Spitzer and Earth
Wei Zhu,Andrzej Udalski,Chelsea X. Huang,S. Calchi Novati,Takahiro Sumi,Radosław Poleski,Jan Skowron,P. Mróz,Michał K. Szymański,Igor Soszyński,P. Pietrukowicz,S. Kozlowski,K. Ulaczyk,Michał Pawlak,C. A. Beichman,G. Bryden,Sean Carey,B. S. Gaudi,Andrew Gould,Calen B. Henderson,Yossi Shvartzvald,Jennifer C. Yee,Ian A. Bond,David P. Bennett,Daisuke Suzuki,N. J. Rattenbury,Naoki Koshimoto,Fumio Abe,Yuichiro Asakura,Richard K. Barry,A. Bhattacharya,Martin Donachie,P. A. Evans,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,K. Kawasaki,Man Cheung Alex Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Satoshi Miyazaki,H. Munakata,Yasushi Muraki,Masayuki Nagakane,K. Ohnishi,Clément Ranc,To. Saito,A. Sharan,Denis J. Sullivan,Paul J. Tristram,T. Yamada,Atsunori Yonehara +52 more
TL;DR: In this article, the authors present the result of microlensing event MOA-2016-BLG-290, which received observations from the two-wheel Kepler (K2), Spitzer, as well as ground-based observatories A joint analysis of data from K2 and the ground leads to two degenerate solutions of the lens mass and distance.
Journal ArticleDOI
Binary Source Microlensing Event OGLE-2016-BLG-0733: Interpretation of a Long-Term Asymmetric Perturbation
Y. K. Jung,Andrzej Udalski,Jennifer C. Yee,Takahiro Sumi,Andrew Gould,Andrew Gould,Andrew Gould,C. Han,Michael D. Albrow,C.-U. Lee,C.-U. Lee,Seung-Lee Kim,Seung-Lee Kim,S. J. Chung,S. J. Chung,Kyu-Ha Hwang,Yoon-Hyun Ryu,I.-G. Shin,Wei Zhu,Sang-Mok Cha,Sang-Mok Cha,D.-J. Kim,Yongseok Lee,Yongseok Lee,Byeong-Gon Park,Byeong-Gon Park,R. W. Pogge,P. Pietrukowicz,S. Kozlowski,Radosław Poleski,Radosław Poleski,Jan Skowron,P. Mróz,Michał K. Szymański,Igor Soszyński,Michał Pawlak,Krzysztof Ulaczyk,Fumio Abe,David P. Bennett,David P. Bennett,Richard K. Barry,Ian A. Bond,Yuichiro Asakura,Aparna Bhattacharya,Martin Donachie,M. Freeman,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,Naoki Koshimoto,Man Cheung Alex Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Yasushi Muraki,Masayuki Nagakane,H. Oyokawa,Nicholas J. Rattenbury,A. Sharan,Denis J. Sullivan,Daisuke Suzuki,Paul J. Tristram,T. Yamada,Atsunori Yonehara +63 more
TL;DR: In this paper, the authors present the analysis of the OGLE-2016-BLG-0733 microlensing event and find that the perturbation originates from the binarity of the source rather than the lens.
Journal ArticleDOI
OGLE-2015-BLG-1459L: The Challenges of Exo-Moon Microlensing.
K.-H. Hwang,Andrzej Udalski,Ian A. Bond,Michael D. Albrow,Sun-Ju Chung,Andrew Gould,C. Han,Y. K. Jung,Yoon-Hyun Ryu,In-Gu Shin,Jennifer C. Yee,Wei Zhu,Sang-Mok Cha,D.-J. Kim,H.-W. Kim,S. L. Kim,C.-U. Lee,Duk-Hang Lee,Y. Lee,Byeong-Gon Park,Richard W. Pogge,Michał Pawlak,R. Poleski,Michał K. Szymański,Jan Skowron,Igor Soszyński,P. Mróz,S. Kozlowski,Paweł Pietrukowicz,Krzysztof Ulaczyk,Fumio Abe,Yuichiro Asakura,Richard Barry,David P. Bennett,Aparna Bhattacharya,Martin Donachie,P. A. Evans,Akihiko Fukui,Yuki Hirao,Yoshitaka Itow,K. Kawasaki,Naoki Koshimoto,Man Cheung Alex Li,C. H. Ling,Kimiaki Masuda,Yutaka Matsubara,Satoshi Miyazaki,Yasushi Muraki,Masayuki Nagakane,K. Ohnishi,Clément Ranc,Nicholas J. Rattenbury,To. Saito,A. Sharan,Denis J. Sullivan,Takahiro Sumi,Daisuke Suzuki,Paul J. Tristram,T. Yamada,Atsunori Yonehara +59 more
TL;DR: In this article, the authors show that dense OGLE and KMTNet $I$-band survey data require four bodies (sources plus lenses) to explain the microlensing light curve of OGLE-2015-BLG-1459.