안녕하십니까.

오는 수요일(6월 19일) 오후 4:00에 아래와 같이 2024년 상반기 정규 콜로키움이 진행될 예정입니다.
발표 후에는 연사와의 대화시간(5:00-5:40) 및 저녁 식사가 예정되어 있으니 많은 참여 부탁드립니다.

발표자: 이윤희 박사 (경북대학교)
호스트: 이진희
장소: 장영실홀 331-2 및 원격 연결
일시: 6월 19일 (수) 오후 4:00
접속주소: https://zoom.us/j/97831661511?pwd=w2p4x9Cv6HgoBGvsq90nOPVLMkk1pe.1
교육학점: 천문연 소속 현장참석자의 경우 필수 0.5 학점 부여

제목: The Formation and Evolution of Barred Galaxies.
초록: 
Barred galaxies are a common type of galaxies in the local universe, observed in over 60% of disk galaxies. The bar structure plays a significant role in determining galaxy substructures such as spiral arms, rings and central dust structures. It is also a crucial driver of the secular evolution of galaxies, redistributing the mass of gas, stars, and even dark matter: it drives gas into the central regions of galaxies, builds a pseudo- or boxy/peanut bulge, and can even elongate the dark matter halo. According to theoretical studies, in an isolated system, a bar structure rapidly forms when a stellar disk is unstable and grows by interacting with the dark matter halo. However, observations do not find evidence for the growth of bar structures in terms of their length, strength, and pattern speed, which induces tension between the distribution of dark matter in simulations and observations. Furthermore, galaxy interactions that induce barred galaxies add complexity to our understanding of barred galaxies. In this talk, I will introduce our recent and ongoing work on barred galaxies using photometry from SDSS, PS1, HST, DESI, and CFHT and spectroscopy from Gemini, CALIFA, MUSE, and JWST. Our work spans the methods to detect barred galaxies to their evolution in the context of their main properties: length, strength, and pattern speed. Lastly, I will introduce the important role of the KASI’s next projects, including K-DRIFT, LSST, and the DARWIN project, in the study of barred galaxies.

진행언어: 한국어
슬라이드언어: 영어

원격 접속 방법 :
A. 웹 브라우저: Chrome을 추천하며 아래 주소를 실행시 Zoom 구동을 위한 프로그램이 설치될 수 있음
B. 접속 주소: https://zoom.us/j/97831661511?pwd=w2p4x9Cv6HgoBGvsq90nOPVLMkk1pe.1
C. 유의사항: 접속 후 "마이크는 뮤트로 설정" - 기본설정은 뮤트로 되어있음 > 질의 응답시간에는 마이크를 사용해서 질문 가능함

2024년 상반기 천문연구원 콜로키움 일정
https://www.kasi.re.kr/kor/publication/post/notice/29938
(위 일정은 연사분의 상황에 따라서 변경될 수 있습니다.)

천문연 콜로키움 위원회 (김종수, 선광일, 이창원, 문홍규, 노혜림, 한정열)
운영위원회 (김진호, 송영범, 오재석, 윤용민, 조영수, 홍경수) 

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Dear all,

The KASI's regular colloquium is scheduled at Jun. 19, as shown below.
A conversation session with speakers and dinner are scheduled after the colloquium.

Speaker: Dr. Yun Hee Lee (Kyungpook National University)
Host: Jinhee Lee
Place: Jang Yeong-sil Hall 331-2 & Online
Time: June 19 (Wed) 4:00 pm 
Access: https://zoom.us/j/97831661511?pwd=w2p4x9Cv6HgoBGvsq90nOPVLMkk1pe.1
KASI Educational credits: 0.5 educational credits are awarded to off-line attendees.

Title: The Formation and Evolution of Barred Galaxies.
Abstract: 
Barred galaxies are a common type of galaxies in the local universe, observed in over 60% of disk galaxies. The bar structure plays a significant role in determining galaxy substructures such as spiral arms, rings and central dust structures. It is also a crucial driver of the secular evolution of galaxies, redistributing the mass of gas, stars, and even dark matter: it drives gas into the central regions of galaxies, builds a pseudo- or boxy/peanut bulge, and can even elongate the dark matter halo. According to theoretical studies, in an isolated system, a bar structure rapidly forms when a stellar disk is unstable and grows by interacting with the dark matter halo. However, observations do not find evidence for the growth of bar structures in terms of their length, strength, and pattern speed, which induces tension between the distribution of dark matter in simulations and observations. Furthermore, galaxy interactions that induce barred galaxies add complexity to our understanding of barred galaxies. In this talk, I will introduce our recent and ongoing work on barred galaxies using photometry from SDSS, PS1, HST, DESI, and CFHT and spectroscopy from Gemini, CALIFA, MUSE, and JWST. Our work spans the methods to detect barred galaxies to their evolution in the context of their main properties: length, strength, and pattern speed. Lastly, I will introduce the important role of the KASI’s next projects, including K-DRIFT, LSST, and the DARWIN project, in the study of barred galaxies.

Language: Korean
Slide Language: English

Remote access procedure:
A. Web browser: Chrome - When executing the address below, a program for additional zoom operation can be installed.
B. Access: Go to  https://zoom.us/j/97831661511?pwd=w2p4x9Cv6HgoBGvsq90nOPVLMkk1pe.1
C. Notice: After join, Please mute your microphone. - The default setting is microphone mute. > After the presentation, during the Q&A session, you can use the microphone to ask questions.

2024A KASI Colloquium Schedule
https://www.kasi.re.kr/kor/publication/post/notice/29938
(This schedule may vary depending on the speakers' schedule.)

KASI Colloquium committee (Jongsoo Kim, Kwang-Il Seon, Chang Won Lee, Hong-Kyu Moon, Hyerim Noh, Jeong-Yeol Han)
Working committee (Jinho Kim, Youngbum Song, Jae Sok Oh, Yongmin Yoon, Youngsoo Jo, Kyeongsoo Hong)