アキタヤ　ヒロシ   秋田谷　洋    所属   千葉工業大学  天文学研究センター 天文学研究センター    職種   上席研究員
言語種別	英語
発行・発表の年月	2016
形態種別	国際会議プロシーディングス
標題	Photometric and Polarimetric Observations of Be/X-Ray and Be/Gamma-Ray Binaries
執筆形態	共著
掲載誌名	BRIGHT EMISSARIES: BE STARS AS MESSENGERS OF STAR-DISK PHYSICS
掲載区分	国外
出版社・発行元	ASTRONOMICAL SOC PACIFIC
巻・号・頁	506,pp.295-298
著者・共著者	Y. Moritani,H. Akitaya,N. Ebisuda,R. Itoh,Y. Kanda,M. Kawabata,K. Kawaguchi,K. Mori,T. Nakaoka,Y. Ohashi,K. Takaki,I. Ueno,T. Ui,T. Urano,M. Yoshida
概要	Be/X-ray and Be/gamma-ray binaries are systems comprised of a Be star and a compact object. In these systems, the Be disk plays an important role in their high-energy activities through the interaction with the compact object. Because of highly eccentric orbits, the interaction depends on the orbital phase in Be/X and Be/gamma-ray binaries. Such interaction affects the Be disk structure, causing photometric and polarimetric variabilities. In order to search for photometric and polatimetric variability in Be/X-ray and Be/gamma-ray binaries, we have monitored several systems with the polarimeter attached to Hiroshima 1.5m Kanata telescope, Japan. Our two-year monitor finds that some programmed systems show photometric variations and a few systems show polatimatric variabilities.