안녕하십니까.

오는 수요일(5월 20일) 오후 4:00에 아래와 같이 2026년 상반기 정규 콜로키움이 진행될 예정입니다.

발표 후에는 연사와의 대화시간(5:00-5:40) 및 저녁 식사가 예정되어 있으니 많은 참여 부탁드립니다.

발표자: 정인태 교수 (충북대학교)

호스트: 이재현

장소: 장영실홀 331-2 및 원격 연결

일시: 5월 20일 (수) 오후 4:00

접속주소: https://us06web.zoom.us/j/84840334355?pwd=3FUkcuaYwNQwscjoUSo3ulk6KPPo6x.1

교육학점: 천문연 소속 현장참석자의 경우 필수 0.5 학점 부여

제목: Galaxies that Reionized the Universe in the JWST Era

초록: 

How did the first galaxies transform the Universe from a dark, neutral state into the transparent cosmos we observe today? The Epoch of Reionization marks this dramatic transition, driven by the earliest generations of galaxies, yet the nature of these sources and how their radiation escaped into the intergalactic medium remain open questions. JWST is now providing the first detailed view of galaxies in this early era, revealing their physical properties and environments with unprecedented clarity. In this talk, I will present recent results from JWST studies of reionization-era galaxies, focusing on observational signatures such as strong emission lines, Lyman-alpha visibility, and evidence for ionized bubble structures. I will highlight the emerging importance of faint and extreme emission-line galaxies, which may play a major role in the ionizing photon budget. Together, these new observations are not only reshaping our current picture, but are paving the way toward a physically complete and observationally grounded understanding of how galaxies reionized the Universe.

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://us06web.zoom.us/j/84840334355?pwd=3FUkcuaYwNQwscjoUSo3ulk6KPPo6x.1

C. 유의사항: 접속 후 "마이크는 뮤트로 설정" - 기본설정은 뮤트로 되어있음 > 질의 응답시간에는 마이크를 사용해서 질문 가능함

천문연 콜로키움 위원회 (김종수, 선광일, 이창원, 문홍규, 홍성욱, 한정열)

운영위원회 (김진호, 홍준석, 석지연, 이재현, 유영삼, 송상헌)

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Dear all,

The KASI's regular colloquium is scheduled at May. 20, as shown below.

A conversation session with speakers and dinner are scheduled after the colloquium.

Speaker: Prof. Intae Jung (Chungbuk National Univeristy (CBNU))

Host: Jaehyun Lee

Place: Jang Yeong-sil Hall 331-2 & Online

Time: May 20 (Wed) 4:00 pm 

Access: https://us06web.zoom.us/j/84840334355?pwd=3FUkcuaYwNQwscjoUSo3ulk6KPPo6x.1

KASI Educational credits: 0.5 educational credits are awarded to off-line attendees.

Title: Galaxies that Reionized the Universe in the JWST Era

Abstract: 

How did the first galaxies transform the Universe from a dark, neutral state into the transparent cosmos we observe today? The Epoch of Reionization marks this dramatic transition, driven by the earliest generations of galaxies, yet the nature of these sources and how their radiation escaped into the intergalactic medium remain open questions. JWST is now providing the first detailed view of galaxies in this early era, revealing their physical properties and environments with unprecedented clarity. In this talk, I will present recent results from JWST studies of reionization-era galaxies, focusing on observational signatures such as strong emission lines, Lyman-alpha visibility, and evidence for ionized bubble structures. I will highlight the emerging importance of faint and extreme emission-line galaxies, which may play a major role in the ionizing photon budget. Together, these new observations are not only reshaping our current picture, but are paving the way toward a physically complete and observationally grounded understanding of how galaxies reionized the Universe.

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://us06web.zoom.us/j/84840334355?pwd=3FUkcuaYwNQwscjoUSo3ulk6KPPo6x.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.

KASI Colloquium committee (Jongsoo Kim, Kwang-Il Seon, Chang Won Lee, Hong-Kyu Moon, Sungwook Hong, Jeong-Yeol Han)

Working committee (Jinho Kim, Junseok Hong,  Ji Yeon Seok, Jaehyun Lee, Young Sam Yu, Sanghun Song)