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

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Measurements of chromospheric Mg i emission lines of zero-age main-sequence stars

Mai Yamashita Yoichi Itoh

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 74(3) 557-568 2022年6月

The chromosphere is the active atmosphere in which energetic eruption events, such as flares, occur. Chromospheric activity is driven by the magnetic field generated by stellar rotation and convection. The relationship between chromospheric activi...

Regular radial velocity variations in nine G- and K-type giant stars: Eight planets and one planet candidate

Huan-Yu Teng Bun'ei Sato Takuya Takarada Masashi Omiya Hiroki Harakawa Hideyuki Izumiura Eiji Kambe Yoichi Takeda Michitoshi Yoshida Yoichi Itoh Hiroyasu Ando Eiichiro Kokubo

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 74(1) 92-127 2022年2月

We report the detection of radial velocity (RV) variations in nine evolved G- and K-type giant stars. The observations were conducted at Okayama Astrophysical Observatory. Planets or planet candidates can best explain these regular variations. How...

Gravitational Wave Physics and Astronomy in the nascent era

Makoto Arimoto Hideki Asada Michael L Cherry Michiko S Fujii Yasushi Fukazawa Akira Harada Kazuhiro Hayama Takashi Hosokawa Kunihito Ioka Yoichi Itoh Nobuyuki Kanda Koji S Kawabata Kyohei Kawaguchi Nobuyuki Kawai Tsutomu Kobayashi Kazunori Kohri Yusuke Koshio Kei Kotake Jun Kumamoto Masahiro N Machida Hideo Matsufuru Tatehiro Mihara Masaki Mori Tomoki Morokuma Shinji Mukohyama Hiroyuki Nakano Tatsuya Narikawa Hitoshi Negoro Atsushi Nishizawa Takayuki Ohgami Kazuyuki Omukai Takanori Sakamoto Shigeyuki Sako Mahito Sasada Yuichiro Sekiguchi Motoko Serino Jiro Soda Satoshi Sugita Kohsuke Sumiyoshi Hajime Susa Teruaki Suyama Hirotaka Takahashi Kazuya Takahashi Tomoya Takiwaki Takahiro Tanaka Masaomi Tanaka Ataru Tanikawa Nozomu Tominaga Nami Uchikata Yousuke Utsumi Mark R Vagins Kei Yamada Michitoshi Yoshida

Progress of Theoretical and Experimental Physics 2023(10) 2021年4月

<title>Abstract</title>
The detections of gravitational waves (GW) by LIGO/Virgo collaborations provide various possibilities to physics and astronomy. We are quite sure that GW observations will develop a lot both in precision and in number owin...

Revealing the Spectroscopic Variations of FU Orionis Object V960 Mon with High-resolution Spectroscopy

Yuhei Takagi Satoshi Honda Akira Arai Jun Takahashi Yumiko Oasa Yoichi Itoh

ASTROPHYSICAL JOURNAL 904(1) 2020年11月

We present the results of the high-resolution spectroscopy of the FU Orionis-type star V960 Mon. The brightness of V960 Mon decreased continuously after the outburst was detected in 2014 November. During this dimming event, we carried out medium-r...

Measurements of the Ca II infrared triplet emission lines of pre-main-sequence stars

Mai Yamashita Yoichi Itoh Yuhei Takagi

PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN 72(5) 2020年10月

We investigated the chromospheric activity of 60 pre-main-sequence (PMS) stars in four molecular clouds and five moving groups. It is considered that strong chromospheric activity is driven by the dynamo processes generated by stellar rotation. In...