세미나 연사 
이민주(University of Tokyo)
 세미나 장소 
과학관 638
 연도 
2017
 월 / 일 
11/24
 시간 
16:00

Title : Galaxy evolution at high redshift protocluster : ALMA view and future prospects

 

Abstract :

A high redshift protocluster is the first place of the most massive structure of the Universe, and it would accompany an early build-up of present-day red-and-dead galaxies. There is no conclusive argument regarding how and when galaxies’ environment plays an important role on the formation and evolution of massive galaxies or never it would. It is crucial to learn about gaseous component because it carries information of ‘current’ fuel for star forming activity and morphological/dynamical status. With this motivation, we study one of the overdense regions of Halpha emitters (HAEs) at z~2.5 that is identified by the narrow-band filter technique using Subaru telescope. We study cold gas properties through the multi-cycle ALMA observations of dust continuum and low/mid CO lines (CO(3-2) and CO(4-3)). From 1.1 mm and CO(3-2) imaging at low resolution (0.7-0.9 arcsec, ~ 7 kpc), we find that the global gas content for massive HAEs (>4e10 Msun) is on average comparable to that of field galaxies (fgas ~ 0.5) at that redshift, but with a tentatively large scatter. The kinematic properties of HAEs are diverse including potential mergers and disk-like galaxies, which are investigated from the higher resolution imaging (~0.4 arcsec) of CO(4-3). One clear disk galaxy has a high value of V/σ (~10) compared to that of high-z field galaxies, which is on average V/σ ~ 3 at z~2. I discuss a potential scenario on these findings that needs confirmation with future observations. I finally present near future plans for protocluster studies using Subaru and ALMA.

 

목록

Page 1 / 9
제목  세미나 연사   세미나 장소   연도   월 / 일   시간 

지난 10년 (2008년 - 2018년) 인공강우 실험 주요결과

| 대기과학
장기호 박사님 (국립기상과학원) 과학관 553 2018 5/1 16:00

Van Gogh's Starry Night으로부터 배우는 바다에서의 난류

| 대기과학
김성용 교수님 (KAIST) 과학관 553 2018 4/17 16:00

Game Theory and Distributed Control

| 천문우주학
Prof. KwangKi Kim (Inha University) 과학관B102 2018 4/27 11:00

Network Cosmology : What I have learned from galaxy 'Facebook'

| 천문우주학
Dr. Sungryong Hong (Korea Institute for Advanced Study) 과학관B102 2018 4/20 11:00

Constraining the Lyman-alpha Equivalent Width Distribution at the end of cosmic reionization

| 천문우주학
Intae Jung (UT Austin) 과학관 638 2018 4/11 16:00

Lyman alpha emission from high-redshift galaxies and their circum-galactic medium - a joint view from MUSE and simulations.

| 천문우주학
Dr. Jeremy Blaizot(Observertoire de Lyon ) 과학관B102 2018 4/3 16:00

도시 흐름, 대류 및 분산 (Urban Flow, Convection, and Dispersion)

| 대기과학
백종진 교수님(서울대학교) 과학관 553 2018 3/27 16:00

What is Nature Astronomy and how do I get published in it?

| 천문우주학
Dr. Marios Karouzos(Nature Astronomy) 과학관B102 2018 3/23 11:00

The Unbalanced Dynamics of Deep Jet Streaks Above Developing Surface Inverted Troughs

| 대기과학
Prof. Michael L. Kaplan(Desert Research Institute) 과학관 553 2018 3/21 11:00

Korean Heatwaves and Their Association with Large-scale Atmospheric Circulation Patterns

| 대기과학
이명인 교수님(울산과학기술원) 과학관 553 2018 3/20 16:00

The MESSIER surveyor: lifting the veil on the ultra-low surface brightness universe

| 천문우주학
David Valls-Gabaud(CNRS, Observertoire de Paris) 과학관B102 2018 3/16 11:00

Characteristics of Cold Surges over East Asia and Its Relation to Arctic Oscillation

| 대기과학
박태원 교수님(전남대학교 지구과학교육과) 과학관 553 2017 12/5 16:00

기후변화적응 기술로서의 수처리적용:남태평양 도서국 사례 중심으로

| 지구시스템과학
김경웅 교수님(광주과학기술원) 과학관B104 2017 11/30 16:00

Galaxy evolution at high redshift protocluster : ALMA view and future prospects

| 천문우주학
이민주(University of Tokyo) 과학관 638 2017 11/24 16:00

시험용 달 궤도선과 지상국 개발 현황

| 천문우주학
송영주 박사님(한국항공우주연구원) 과학관B101 2017 11/24 11:00

Spacecraft Formation Flying and Virtual Space Telescope

| 천문우주학
박상영 교수님 과학관B101 2017 11/17 11:00

Into the Unknown '미지의 우주 속으로'

| 천문우주학
Northrop Grumman 과학관B102 2017 11/10 11:00

Dynamics of the local group galaxies using HST proper motions

| 천문우주학
손상모 박사님(STScI) 과학관 638 2017 11/8 11:00

Multi-algorithmic Hybrid Attitude Determination and Control System for Cubesats

| 천문우주학
이대영 박사님(Univ. Texas Austin) 과학관615B 2017 11/7 16:30

해양자료동화를 적용한 해양순환 및 기후예측 시스템 개발

| 대기과학
김영호 박사님(한국해양과학기술원) 과학관 553 2017 11/7 16:00

Board Links