Image Details
Caption: Figure 6.
Distributions and lognormal fits for three parameters derived from the 12CO and 13CO observations. (a) Tmb(12CO), the main-beam brightness temperature of 12CO. (b) The ratio Tmb(12CO)/Tmb(13CO). (c) Excitation temperature (Tex). Histograms show data from the TRAO telescope (this work) and comparative data from the PMO telescope (Y. Wu et al. 2012). Solid curves represent the best-fit lognormal distributions, with the fitted parameters (μ, σ) indicated in each panel.
© 2026. The Author(s). Published by the American Astronomical Society.