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[천문학콜로키움]2019.09.24 (화) 고종완 박사

작성자 학과세미나 작성일 2019/09/17 조회수 69
날짜 2019-09-24 시간 16:30 ~ 18:00 장소 제2 과학관 425호
첨부파일 첨부파일없음
제목 : Finding the origin of intracluster light
일시 : 2019년 9월 24일 화요일 오후 4시 30분 ~ 6시
장소 : 경북대학교 제2과학관 425호
연사 : 고종완 박사님, 한국천문연구원

초록 : Not all stars in the Universe are gravitationally bounded to galaxies. Since first discovered in 1951, observations have revealed that a significant fraction of stars fills the space between galaxies in local galaxy clusters, observed as diffuse intracluster light (ICL). Theoretical models provide mechanisms for the production of intracluster stars as tidally stripped material or debris generated through numerous galaxy interactions during the hierarchical growth of the galaxy cluster. These mechanisms predict that most intracluster stars in local galaxy clusters are long-accumulated material since z~1, corresponding to an age of the Universe of more than 6 billion years. However, there is no observational evidence to verify this prediction. In this talk, I will report observations of abundant ICL for massive galaxy clusters at z>1, and introduce a KASI project which is developing a pathfinder telescope optimized to probe low surface brightness structures such as ICL.
다음글 : [천문학콜로키움]2019.10.01 (화) 신지혜 박사.. 학과세미나 2019/09/24
현재글 : [천문학콜로키움]2019.09.24 (화) 고종완 박사.. 학과세미나 2019/09/17
이전글 : [알림]2019 국토위성정보연구소 기술세미나 2019. 5.. 천문대기과학전공 2019/05/22