Speaker1: Toya Suzuki
Affiliation: SOKENDAI 5th year (D3)
(Supervisor: Kazunori Kohri, Nozomu Tominaga, Tomoya Takiwaki)
Title: General relativistic effects on photon spectrum emitted from dark matter halos around primordial black holes

Speaker2: Yuzuki Nagashima
Affiliation: SOKENDAI 3rd year (D1)
(Supervisor: Daisuke Iono, Koichiro Nakanishi, Nanase Harada)
Title: Signatures of the 13CO/C18O abundance ratio variation between bar and spiral arms in NGC 1068

Speaker3: Bakuh Danang Setyo Budi
Affiliation: SOKENDAI 1st year (M1)
(Supervisor: Wako Aoki, Miho Ishigaki, Ko Takahashi)
Title: Unveiling Oxygen’s Past with Subaru/IRD : Oxygen Abundance in Extremely Metal-Poor Stars

Speaker1: Nana Matsuno
Affiliation: SOKENDAI 2nd year (M2)
(Supervisor: Mami Machida, Nozomu Tominaga, Yuka Fuji)
Title: MHD Simulations Including Thermal Conduction for Understanding AGN Jet–Cluster Magnetic Field Interactions

Speaker2: Kazuki Watanabe
Affiliation: SOKENDAI 3rd year (D1)
(Supervisor: Tai Oshima, Yoshinori Uzawa, Hiroshi Matsuo)
Title: Development of a Temperature-Variable Cold Blackbody calibrator for Millimeter and Submillimeter Wave Detectors

Speaker3: Abdurrahman Naufal
Affiliation: SOKENDAI 5th year (D3)
(Supervisor: Yusei Koyama, Masayuki Tanaka, Yuchi Matsuda)
Title: Quenching and transformation of galaxies in the Spiderweb protocluster

Speaker1: Yui Takeda
Affiliation: SOKENDAI 2nd year (M2)
(Supervisor: Masami Ouchi, Miho Ishigaki, Ko Takahashi)
Title: Exploring the Origin of Supermassive Black Hole with JWST/NIRSpec IFU

Speaker2: Yoshihiro Naito
Affiliation: SOKENDAI 4th year (D2)
(Supervisor: Hirohisa Hara, Ryohko Ishikawa, Joten Okamoto)
Title: Magnetic configuration of off-limb spicules observed with SUNRISE-3/SCIP

Speaker3: Kuria Watanabe
Affiliation: SOKENDAI 4th year (D2)
(Supervisor: Masami Ouchi, Nozomu Tominaga, Masato Onodera)
Title: The Chemical Enrichment and Origin of  Nitrogen-Rich Galaxies at High Redshift

【日時】5月2日(水)　10:30～12:00
【場所】国立天文台・三鷹　中央棟（北）1階 講義室
【発表者1】利川潤　(総研大 D1、指導教員：柏川伸成)
【タイトル】Search for high-redshift protoclusters by wide-field imaging
【Abstract】
Galaxy clusters play an important role for the large-scale structure of the universe and galaxy evolution. Galaxy clusters are located in the densest peaks of dark matter, and galaxies lying inside galaxy clusters are generally more massive and older than those in low-density regions.
When and how were these distinct properties formed? One promising line of study is to investigate directly the primitive galaxy clusters, “protoclusters”, in the early universe. Especially, we focus on the start of cluster formation. However, only a few high-z protoclusters were found. Therefore, we are searching for new high-z protoclusters in the deep and wide field of Canada-France-Hawaii Telescope Legacy Survey (CFHTLS) Deep fields, and found two protocluster candidates at z~6.
【発表者2】Pan Hsi-An (総研大 D1、指導教官：久野成夫)
【タイトル】Molecular gas and star formation properties of NGC 628
【Abstract】
It is widely accepted that molecular gas is the dominant material of star formation.
Since H2 (molecular hydrogen) is not observable, the second abundant molecular 12CO has become a proxy of tracing molecular gas. However, 12CO is optically thick, which is able to trace the molecular gas at the surface of molecular cloud only.
Therefore the observation in optically thin line, such as 13CO is needed. We observe both 12CO and 13CO toward NGC 628 to constrain the ability of a optically thin line in determining the molecular gas properties and its relation with star formation. Both observation and data analysis are ongoing.