Tsukuba Uchu Forum

154th Uchu Forum

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

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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...

153rd Uchu Forum

Carbon-Chain Chemistry in Active Star-Forming Regions

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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...

  1. 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)   May 2025  
  2. Carbon-Chain Chemistry in Active Star-Forming Regions, Kotomi Taniguchi (National Astronomical Observatory of Japan)   April 2025