Supermassive star and supermassive black-hole formation through accretinon on cosmological scales

Masaki Kiyuna

Tohoku University

Supermassive black holes (SMBHs), with masses ranging from 10^6 to 10^10 solar masses (Msun), are known to exist ubiquitously at the centres of galaxies. How such massive objects formed remains a major open question in astrophysics. Recent observations with the James Webb Space Telescope (JWST) have revealed SMBHs with masses...

Spatial and spectral variation of the 12CO(J=2-1)/12CO(J=1-0) line ratio in nearby galaxies

Shinya Komugi

Kogakuin University of Technology & Engineering

We present 12CO(J = 1 – 0) mapping observations over ∼1/2 of the optical disk of 12 nearby galaxies from the Fundamental CO 1–0 Transition Survey of nearby galaxies (FACTS), using the ALMA Total Power array. Variations in the 12CO(J = 2 − 1)/12CO(J = 1 − 0) line ratio...

Carbon-Chain Chemistry in Active Star-Forming Regions

Kotomi Taniguchi

National Astronomical Observatory of Japan

Carbon chain molecules, which consist of a series of carbon atoms, are molecules unique to interstellar space. Of the approximately 320 types of interstellar molecules discovered to date, approximately 40% are classified as carbon chain molecules. The chemistry of carbon chain molecules has been studied in low-mass star-forming regions in...

155^th Uchu Forum Supermassive star and supermassive black-hole formation through accretinon on cosmological scales

Masaki Kiyuna (Tohoku University)

154^th Uchu Forum Spatial and spectral variation of the 12CO(J=2-1)/12CO(J=1-0) line ratio in nearby galaxies

Shinya Komugi (Kogakuin University of Technology & Engineering)

153^rd Uchu Forum Carbon-Chain Chemistry in Active Star-Forming Regions

Kotomi Taniguchi (National Astronomical Observatory of Japan)