CO(2–1)/CO(1–0) Line Ratio on a ∼100 Parsec Scale in the Nearby Barred Galaxy NGC 1300

• Published in: The Astrophysical journal Vol. 926; no. 1; pp. 96 - 109
• Main Authors: Maeda, Fumiya, Egusa, Fumi, Ohta, Kouji, Fujimoto, Yusuke, Habe, Asao, Asada, Yoshihisa
• Format: Journal Article
• Language: English
• Published: Philadelphia The American Astronomical Society 01.02.2022; IOP Publishing
• Subjects: Astrophysics; Barred galaxies; Barred spiral galaxies; Carbon monoxide; CO line emission; Galactic structure; Galaxies; Giant molecular clouds; H alpha line; Interstellar medium; Massive stars; Molecular clouds; Molecular gas; Molecular gases; Radio telescopes; Star & galaxy formation; Star formation; Stars & galaxies; Tracers

CO(2–1) emission is often used as a tracer of giant molecular clouds (GMCs) as an alternative to CO(1–0) emission in recent years. Therefore, understanding the environmental dependence of the line ratio of CO(2–1)/CO(1–0), R 21 , on the GMC scale is important to accurately estimate the mass of GMCs....