SIMBAD references

Based on the space Midcourse Space Experiment (MSX) observation in bands A (8 µm), C (12 µm), D (15 µm), and E (21 µm) and the ground SiO maser observation of evolved stars by the Nobeyama 45 m telescope in the v=1 and v=2 J=1-0 transitions, the relation between SiO maser emission and midinfrared continuum radiation is analyzed. The relation between SiO maser emission and the IR radiation in the MSX bands A, C, D, and E is all clearly correlated. The SiO maser emission can be explained by a radiative pumping mechanism according to its correlation with infrared radiation in the MSX band A.