Molecular and low excitation emission in high mass post-main-sequence nebulae
A broad range of type I post-main-sequence nebulae have been mapped and studied spectroscopically in the J = 1 - 0, J = 2 - 1, and J = 3 - 2 transitions of CO using the 12-m antenna at Kitt Peak and the 45-m facility at the Nobeyama Radio Observatory. CO J = 2 - 1 emission associated with NGC 3132 and NGC 6445 is detected; the location of CO J = 1
Phillips, J. P. et al.
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