Tae-Soo Pyo
University of Tokyo
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Publication
Featured researches published by Tae-Soo Pyo.
Ground-based and Airborne Instrumentation for Astronomy VII | 2018
Motohide Tamura; Makoto Watanabe; Tae-Soo Pyo; Hiroshi Terada; Takashi Hattori; Yutaka Hayano; Yosuke Minowa; Shin Oya; Masayuki Hattori; Tomoyuki Kudo; Mikio Morii; Jun Hashimoto
We have developed the near-infrared high-spatial resolution imaging and spectro-polarimetric modes with the laser guide adaptive optics system (AO188) and the Infrared Camera and Spectrograph (IRCS) of the 8.2-m Subaru telescope. A LiNbO3 Wollaston prism (as dual beam analyzer) and focal plane masks were installed into the camera section of the IRCS cryostat, enabling us to perform the low- and medium-resolution grism spectropolarimetry (λ/Δλ = 100-1960) as well as the imaging-polarimetry, in conjunction with a half-wave retarder, which had been introduced for the HiCIAO instrument originally, at the front of the AO188 system. The designed wavelength coverage of the Wollaston prism is 0.8-5 μm, although the polarimetry at the 0.95-2.5 μm region is presented in this paper because of the limitations on the current retarder and the dichroic beam splitter of AO188. The focal plane masks, which are reflecting mirror or slits made with tungsten carbide, provide two or four rectangular focal plane apertures with an individual field of view of 4.4 arcsec × 21 arcsec or 4.4 × 54 arcsec for the imaging-polarimetry, or two or four slits with a width of 0.10, 0.15, 0.225, and 0.60 arcsec and a length of 4.4 arcsec for the spectro-polarimetry. The Wollaston prism and polarimetry masks were installed on June and July 2013, and the polarimetric modes had the first light on October 2013. The polarization efficiency is 88-96% and 55-80% at maximum for the imaging- and spectro-polarimetry, respectively, and it depends heavily on the angle of image rotator of AO188. The measured instrumental polarization, which is introduced by the telescope tertiary mirror mainly, is 0.3-0.7%. We describe the design and current performance of the polarimetric function in the near-infrared region.
Publications of The Korean Astronomical Society | 2015
Tae-Soo Pyo; Masahiko Hayashi; Tracy L. Beck; Christopher J. Davis; Michihiro Takami
We present [Fe Ⅱ] ⋋ 1.257 μm spectra toward the interacting binary UY Aur with 0".14 angular resolution, obtained with the Near infrared Integral Field Spectrograph (NIFS) combined with the adaptive optics system Altair of the GEMINI observatory. In the [Fe Ⅱ] emission, UY Aur A (primary) is brighter than UY Aur B (secondary). The blueshifted and redshifted emission between the primary and secondary show a complicated structure. The radial velocities of the [Fe ii] emission features are similar for UY Aur A and B: ~ -100 km s -1 and ~ +130 km s -1 for the blueshifted and redshifted components, respectively. Considering the morphologies of the [Fe Ⅱ] emissions and bipolar out ow context, we concluded that UY Aur A drives fast and widely opening out ows with an opening angle of ~9° while UY Aur B has micro collimated jets.
Archive | 2005
Michihiro Takami; A. Chrysostomou; Thomas P. Ray; C. J. Davis; William R. F. Dent; Jeffrey A. Bailey; Motohide Tamura; Hiroshi Terada; Tae-Soo Pyo
Proceedings of SPIE | 2008
Yuji Ikeda; Naoto Kobayashi; Hiroshi Terada; Akinori Shibayama; A. Ozawa; Chikako Yasui; Sohei Kondo; Tae-Soo Pyo; Hideyo Kawakita
Archive | 2005
Tae-Soo Pyo; Masahiko Hayashi; Naoto Kobayashi; Alan T. Tokunaga; Hiroshi Terada; Miwa Goto; Hideki Takami; Naruhisa Takato; Wolfgang Gässler; Shin Oya; Yutaka Hayano; Yukiko Kamata; Yosuke Minowa; Tomonori Usuda; Masanori Iye; Takuya Yamashita
Archive | 2016
Daehyeon Oh; Jun Hashimoto; Joseph C. Carson; Markus Janson; Jungmi Kwon; Takao Nakagawa; Satoshi Mayama; Taichi Uyama; Yi Yang; Tomoyuki Kudo; Nobuhiko Kusakabe; Lyu Abe; Eiji Akiyama; Wolfgang Brandner; Timothy D. Brandt; Thayne Currie; M. Feldt; Miwa Goto; Carol A. Grady; Olivier Guyon; Yutaka Hayano; Masahiko Hayashi; Saeko S. Hayashi; Thomas Henning; Klaus W. Hodapp; Miki Ishii; Masanori Iye; Ryo Kandori; Gillian R. Knapp; Masayuki Kuzuhara
한국천문학회보 | 2015
Jong-Ho Shinn; Kee-Tae Kim; Jae-Joon Lee; Yong-Hyun Lee; Hyun-Jeong Kim; Tae-Soo Pyo; Bon-Chul Koo; Jaemann Kyeong; Narae Hwang; Byeong-Gon Park
한국천문학회보 | 2015
Hyun-Jeong Kim; Bon-Chul Koo; Tae-Soo Pyo; Christopher J. Davis
한국천문학회보 | 2014
Heeyoung Oh; Tae-Soo Pyo; In-Soo Yuk; Byeong-Gon Park
한국천문학회보 | 2014
Heeyoung Oh; Tae-Soo Pyo; In-Soo Yuk; Byeong-Gon Park