The JK=5-1-40 E line at 84.5 GHz and the J=2-1 lines at 96.7 GHz of CH3OH have been observed in Sgr B2 and Ori A. The CH3OH emission region is extended over 4' × 6' in Sgr B2. The emission characteristics of CH3OH are interpreted in terms of the excitation conditions. For Sgr B2, the estimated hydrogen density and kinetic temperature are ∼5 × 104 cm-3 and ≥ 30 K, respectively.
Publications of the Astronomical Society of Japan
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