[Speaker 1]
Liang, Yongming, SOKENDAI 1st year (M1)(Supervisor: Kashikawa, Nobunari,,)
[Title]
A start to understand the relation between galaxies and IGM in the most over-dense regions

[Speaker 2]
Masafusa Onoue, SOKENDAI 5th year (D3)(Supervisor: Nobunari Kashikawa,,)
[Title]
Exploration of the Cosmic Dawn with High-Redshift Quasars

[Speaker 3]
Kei Ito, SOKENDAI 1st year (M1)(Supervisor: Nobunari Kashikawa,Yuichi Matsuda,Yusei Koyama)
[Title]
Detecting Brightest Cluster Galaxies at z~4 by using Hyper Suprime-Cam

[Speaker 1]
Nagaaki Kambara, SOKENDAI 3rd year (D1)(Supervisor: Takashi Sekii,Tetsuya Watanabe,Masahito Kubo)
[Title]
The double-ridge problem: current status and issues

[Speaker 2]
Koki Okutomi, SOKENDAI 5th year (D3)(Supervisor: Yoichi Aso,Raffaele Flaminio,Ryutaro Takahashi)
[Title]
Control of 13.5-meter-tall Suspension system for Main Mirrors in KAGRA

[Speaker]
Tsuguru Ryu, SOKENDAI 5th year (D3)(Supervisor: Motohide Tamura,Saeko Hayashi,Norio Narita)
[Title]
Direct Imaging of Intermediate Mass Giants with RV Trends

[Speaker 1]
Ananya Sahoo, SOKENDAI 3rd year (D1)(Supervisor: Yosuke Minowa,Takayuki Kotani,Naruhisa Takato)
[Title]
An overview of AO188+ SCExAO Wavefront Control Architecture

[Speaker 2]
Shigeru Namiki, SOKENDAI 1st year (M1)(Supervisor: Nobunari Kashikawa,Yusei Koyama,Ikuru Iwata)
[Title]
The environmental Impacts on Mass-Metallicity Relation in Rich Cluster at z~1.52

Speaker1
Tadafumi Matsuno, SOKENDAI 3rd year (D1)(Supervisor: Wako Aoki,Takuji Tsujimoto,Yutaka Komiyama)
Title
Chemically-old stars with young age estimates
Abstract
The combination of a large spectroscopic survey and asteroseismology has discovered a peculiar stellar population in the Galactic disk: they are estimated to be young from their masses but has similar alpha-elements abundances to old stars. Since their existence is not predicted in simple galactic chemical evolution models, the origin is yet to be explained. We obtained high-quality high-resolution optical spectra for 14 of such stars. In addition to the confirmation of their alpha-enhancements, we show that they follow the typical abundance pattern of old stars in almost all the measured elements. Together with the high frequency of radial velocity variation, we suggest they are results of stellar merger or mass transfer from red giants.

Speaker2
Takafumi Tsukui, SOKENDAI 1st year (M1)(Supervisor: 井口聖,永井洋,松田有一)
Title
電波銀河の形成過程の解明
Abstract
Please note that the presenter information posted here is not necessarily listed in order of presentation.