伊藤洋一

研究者氏名	伊藤洋一
	イトウヨウイチ
URL
所属	兵庫県立大学
部署	自然・環境科学研究所宇宙天文系天文科学センター
職名	教授
学位	修士（理学）（東京大学）, 博士（理学）（東京大学）
J-Global ID	200901034412025989

研究キーワード

光学赤外線天文学 ,太陽系外惑星 ,星惑星形成

研究分野

自然科学一般 / 天文学 /

委員歴

2022年

現在

東京大学アタカマ望遠鏡科学諮問委員会

国立天文台すばる科学諮問委員会

論文

<9 101112 13 >

HIGH-CONTRAST NEAR-INFRARED IMAGING POLARIMETRY OF THE PROTOPLANETARY DISK AROUND RY TAU

Michihiro Takami Jennifer L. Karr Jun Hashimoto Hyosun Kim John Wisniewski Thomas Henning Carol A. Grady Ryo Kandori Klaus W. Hodapp Tomoyuki Kudo Nobuhiko Kusakabe Mei-Yin Chou Yoichi Itoh Munetake Momose Satoshi Mayama Thayne Currie Katherine B. Follette Jungmi Kwon Lyu Abe Wolfgang Brandner Timothy D. Brandt Joseph Carson Sebastian E. Egner Markus Feldt Olivier Guyon Yutaka Hayano Masahiko Hayashi Saeko Hayashi Miki Ishii Masanori Iye Markus Janson Gillian R. Knapp Masayuki Kuzuhara Michael W. McElwain Taro Matsuo Shoken Miyama Jun-Ichi Morino Amaya Moro-Martin Tetsuo Nishimura Tae-Soo Pyo Eugene Serabyn Hiroshi Suto Ryuji Suzuki Naruhisa Takato Hiroshi Terada Christian Thalmann Daigo Tomono Edwin L. Turner Makoto Watanabe Toru Yamada Hideki Takami Tomonori Usuda Motohide Tamura

ASTROPHYSICAL JOURNAL 772(2) 2013年8月 [査読有り]

We present near-infrared coronagraphic imaging polarimetry of RY Tau. The scattered light in the circumstellar environment was imaged at the H band at a high resolution (similar to 0 ''.05) for the first time, using Subaru/HiCIAO. The observed pol...

High-precision measurements of the brightness variation of nereid

Tsuyoshi Terai Yoichi Itoh

Publications of the Astronomical Society of Japan 65(2) 46-46 2013年4月 [査読有り]

Nereid, the outer satellite of Neptune, has a highly eccentric prograde orbit with a semimajor axis of larger than 200 in units of Neptune's radius, and is classified as an irregular satellite. Although the capture origin of irregular satellites h...

Phase variation of earthshine polarization spectra

Jun Takahashi Yoichi Itoh Hiroshi Akitaya Akira Okazaki Koji Kawabata Yumiko Oasa Mizuki Isogai

Publications of the Astronomical Society of Japan 65(2) 38-38 2013年4月 [査読有り]

We present the results of the optical spectropolarimetry of Earthshine on the Moon for Earth phase angles ranging from 49° to 96°. The observations were conducted on 2011 March 9-13 (UT) using the spectropolarimeter HBS installed on the 1.88m tele...

Determination of orbital elements of spectroscopic binaries using high-dispersion spectroscopy

Noriyuki Katoh Yoichi Itoh Eri Toyota Bun'Ei Sato

Astronomical Journal 145(2) 2013年2月 [査読有り]

Orbital elements of 37 single-lined spectroscopic binary systems (SB1s) and 5 double-lined spectroscopic binary systems (SB2s) were determined using high-dispersion spectroscopy. To determine the orbital elements accurately, we carried out precise...

A double planetary system around the evolved intermediate-mass star HD 4732

Bun'Ei Sato Masashi Omiya Robert A. Wittenmyer Hiroki Harakawa Makiko Nagasawa Hideyuki Izumiura Eiji Kambe Yoichi Takeda Michitoshi Yoshida Yoichi Itoh Hiroyasu Ando Eiichiro Kokubo Shigeru Ida

Astrophysical Journal 762(1) 2013年1月 [査読有り]

We report the detection of a double planetary system orbiting around the evolved intermediate-mass star HD 4732 from precise Doppler measurements at Okayama Astrophysical Observatory and Australian Astronomical Observatory. The star is a K0 subgia...