Taro Matsuo
Osaka University
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Publication
Featured researches published by Taro Matsuo.
The Astronomical Journal | 2016
N. Koshimoto; A. Udalski; J. P. Beaulieu; T. Sumi; D. P. Bennett; I. A. Bond; N. J. Rattenbury; A. Fukui; V. Batista; J.-B. Marquette; S. Brillant; F. Abe; Y. Asakura; A. Bhattacharya; M. Donachie; M. Freeman; Y. Hirao; Y. Itow; M. C. A. Li; C. H. Ling; K. Masuda; Y. Matsubara; Taro Matsuo; Y. Muraki; K. Ohnishi; H. Oyokawa; To. Saito; A. Sharan; Hiroshi Shibai; Denis J. Sullivan
We report the discovery of a microlensing planet OGLE-2012-BLG-0950Lb with a planet/host mass ratio Periapsis Approx. = 2 x10(exp. -4). A long term distortion detected in both MOA and OGLE light curve can be explained by themicrolens parallax due to the Earths orbital motion around the Sun. Although the finite source effect is not detected, we obtain the lens flux by the high resolution Keck AO observation. Combining the microlens parallax and the lens flux reveal the nature of the lens: a planet with mass of M(sub p) = 35(+17/-)M compared to Earth is orbiting around an M-dwarf with mass of M(sub host) = 0.56(+0.12/-0.16) M compared to the Sun with a planet-host projected separation of r1 = 2.7(+0.6/-0.7) au located at Luminosity Distance = 3.0(+0.8/-1.1) kpc from us. This is the first mass measurement from only microlens parallax and the lens flux without the finite source effect. In the coming space observation-era with Spitzer, K2, Euclid, and WFIRST, we expect many such events for which we will not be able to measure any finite source effect. This work demonstrates an ability of mass measurements in such events.
The Astronomical Journal | 2017
Taichi Uyama; Jun Hashimoto; Masayuki Kuzuhara; Satoshi Mayama; Eiji Akiyama; Thayne Currie; J. Livingston; Tomoyuki Kudo; Nobuhiko Kusakabe; Lyu Abe; Wolfgang Brandner; Timothy D. Brandt; Sebastian Egner; Markus Feldt; Miwa Goto; C. A. Grady; Olivier Guyon; Yutaka Hayano; Masahiko Hayashi; Saeko S. Hayashi; Thomas Henning; Klaus W. Hodapp; Miki Ishii; Masanori Iye; Markus Janson; Ryo Kandori; Gillian R. Knapp; Jungmi Kwon; Taro Matsuo; Michael W. McElwain
We present high-contrast observations of 68 young stellar objects (YSOs) explored as part of the SEEDS survey on the Subaru telescope. Our targets are very young (
The Astronomical Journal | 2017
N. Koshimoto; Y. Shvartzvald; D. P. Bennett; Matthew T. Penny; M. Hundertmark; I. A. Bond; W. C. Zang; C. B. Henderson; D. Suzuki; N. J. Rattenbury; T. Sumi; F. Abe; Y. Asakura; A. Bhattacharya; M. Donachie; Philip Evans; A. Fukui; Y. Hirao; Y. Itow; M. C. A. Li; C. H. Ling; K. Masuda; Y. Matsubara; Taro Matsuo; Y. Muraki; K. Ohnishi; C. Ranc; To. Saito; A. Sharan; Hiroshi Shibai
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The Astronomical Journal | 2017
Y. Hirao; A. Udalski; T. Sumi; D. P. Bennett; N. Koshimoto; I. A. Bond; N. J. Rattenbury; D. Suzuki; F. Abe; Y. Asakura; R. K. Barry; A. Bhattacharya; M. Donachie; P. Evans; A. Fukui; Y. Itow; M. C. A. Li; C. H. Ling; K. Masuda; Y. Matsubara; Taro Matsuo; Y. Muraki; K. Ohnishi; C. Ranc; To. Saito; A. Sharan; Hiroshi Shibai; Denis J. Sullivan; P. J. Tristram; T. Yamada
10 Myr) stars, which often harbor protoplanetary disks where planets may be forming. We achieve a typical contrast of
The Astrophysical Journal | 2016
Taro Matsuo; Satoshi Itoh; Hiroshi Shibai; T. Sumi; Tomoyasu Yamamuro
sim
Publications of the Astronomical Society of Japan | 2016
Yurina Ohta; Misato Fukagawa; Michael L. Sitko; Takayuki Muto; Stefan Kraus; C. A. Grady; John P. Wisniewski; Jeremy R. Swearingen; Hiroshi Shibai; T. Sumi; Jun Hashimoto; Tomoyuki Kudo; Nobuhiko Kusakabe; Munetake Momose; Yoshiko K. Okamoto; Takayuki Kotani; Michihiro Takami; Thayne Currie; Christian Thalmann; Markus Janson; Eiji Akiyama; Katherine B. Follette; Satoshi Mayama; Lyu Abe; Wolfgang Brandner; Timothy D. Brandt; Sebastian Egner; Markus Feldt; Miwa Goto; Olivier Guyon
The Astronomical Journal | 2016
Yi Yang; Jun Hashimoto; Saeko S. Hayashi; Motohide Tamura; Satoshi Mayama; Roman R. Rafikov; Eiji Akiyama; Markus Janson; Jungmi Kwon; Jerome de Leon; Daehyeon Oh; Michihiro Takami; Ya-Wen Tang; Tomoyuki Kudo; Nobuhiko Kusakabe; Lyu Abe; Wolfgang Brandner; Timothy D. Brandt; Sebastian Egner; Markus Feldt; Miwa Goto; C. A. Grady; Olivier Guyon; Yutaka Hayano; Masahiko Hayashi; Thomas Henning; Klaus W. Hodapp; Miki Ishii; Masanori Iye; Ryo Kandori
10^{-4}
The Astronomical Journal | 2017
Satoshi Itoh; Taro Matsuo; Shohei Goda; Hiroshi Shibai; T. Sumi
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Proceedings of SPIE | 2016
Hidehiro Kaneda; Daisuke Ishihara; Shinki Oyabu; Mitsuyoshi Yamagishi; Takehiko Wada; Mitsunobu Kawada; Naoki Isobe; Kentaroh Asano; T. Suzuki; Takao Nakagawa; Hideo Matsuhara; Itsuki Sakon; Kohji Tsumura; Hiroshi Shibai; Taro Matsuo
10^{-5.5}
Publications of the Astronomical Society of Japan | 2015
Mihoko Konishi; Hiroshi Shibai; T. Sumi; Misato Fukagawa; Taro Matsuo; Matthias S. Samland; Kodai Yamamoto; Jun Sudo; Yoichi Itoh; Nobuo Arimoto; Masaru Kajisawa; Lyu Abe; Wolfgang Brandner; Timothy D. Brandt; Thayne Currie; Sebastian Egner; Marcus Feldt; Miwa Goto; C. A. Grady; Oliver Guyon; Jun Hashimoto; Yutaka Hayano; Masahiko Hayashi; Michael W. McElwain
at an angular distance of 1arcsec from the central star, corresponding to typical mass sensitivities (assuming hot-start evolutionary models) of
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