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

<5 678 9 >

A PAIR OF GIANT PLANETS AROUND THE EVOLVED INTERMEDIATE-MASS STAR HD 47366: MULTIPLE CIRCULAR ORBITS OR A MUTUALLY RETROGRADE CONFIGURATION

Bun'ei Sato Liang Wang Yu-Juan Liu Gang Zhao Masashi Omiya Hiroki Harakawa Makiko Nagasawa Robert A. Wittenmyer Paul Butler Nan Song Wei He Fei Zhao Eiji Kambe Kunio Noguchi Hiroyasu Ando Hideyuki Izumiura Norio Okada Michitoshi Yoshida Yoichi Takeda Yoichi Itoh Eiichiro Kokubo Shigeru Ida

Astrophysical Journal 819(1) 2016年3月 [査読有り]

We report the detection of a double planetary system around the evolved intermediate-mass star HD 47366 from precise radial-velocity measurements at the Okayama Astrophysical Observatory, Xinglong Station, and Australian Astronomical Observatory. ...

High-Resolution Spectroscopy of Winds Associated with T Tauri Stars

Naoto Iguchi Yoichi Itoh

Research in Astronomy and Astrophysics 16(2) 2016年2月 [査読有り]

We carried out optical high-resolution spectroscopy of T Tauri stars using the Subaru Telescope. Using archived data from the Keck Telescope and the Very Large Telescope, we detected forbidden lines of [S II] at 4069 Å, in addition to those of [O ...

J-GEM follow-up observations to search for an optical counterpart of the first gravitational wave source GW150914

Tomoki Morokuma Masaomi Tanaka Yuichiro Asakura Fumio Abe Paul J. Tristram Yousuke Utsumi Mamoru Doi Kenta Fujisawa Ryosuke Itoh Yoichi Itoh Koji S. Kawabata Nobuyuki Kawai Daisuke Kuroda Kazuya Matsubayashi Kentaro Motohara Katsuhiro L. Murata Takahiro Nagayama Kouji Ohta Yoshihiko Saito Yoichi Tamura Nozomu Tominaga Makoto Uemura Kenshi Yanagisawa Yoichi Yatsu Michitoshi Yoshida

Publications of the Astronomical Society of Japan 68(4) 2016年 [査読有り]

We present our optical follow-up observations to search for an electromagnetic counterpart of the first gravitational wave source GW150914 in the framework of the Japanese collaboration for Gravitational wave ElectroMagnetic follow-up (J-GEM), whi...

Study of infrared excess from circumstellar disks in binaries with Spitzer/IRAC

Yusuke Itoh Misato Fukagawa Hiroshi Shibai Takahiro Sumi Kodai Yamamoto

Publications of the Astronomical Society of Japan 67(5) 88-88 2015年7月

Rapid dissipation of protoplanetary disks in Ophiuchus

Yuhei Takagi Yoichi Itoh Akira Arai Shoko Sai Yumiko Oasa

Publications of the Astronomical Society of Japan 67(5) 87-87 2015年6月 [査読有り]

We present the results of an age determination study for pre-main sequence stars in the Ophiuchus molecular cloud. The ages of eight pre-main sequence stars were estimated from surface gravities derived from high-resolution spectroscopy. The avera...