ALMA FACTS. II. Large Scale Variations in the 12CO(J = 2 – 1) to 12CO(J = 1 – 0) Line Ratio in Nearby Galaxies

ALMA FACTS. II. Large Scale Variations in the 12CO(J = 2 – 1) to 12CO(J = 1 – 0) Line Ratio in Nearby Galaxies

We present ^12 CO( 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 ^12 CO( J  = 2 − 1)/ ^12 CO( J  = 1 − 0) line ratio r _21 are investig...

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Bibliographic Details
Main Authors: Shinya Komugi, Tsuyoshi Sawada, Jin Koda, Fumi Egusa, Fumiya Maeda, Akihiko Hirota, Amanda M. Lee
Format: Article
Language:English
Published: IOP Publishing 2025-01-01
Series:The Astrophysical Journal
Subjects:
Galaxy disks
Molecular gas
CO line emission
Online Access:https://doi.org/10.3847/1538-4357/ada6b5
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