One third of the CO-emitting gas within 500 pc of the Galactic Center is in a few massive clouds. If these clouds have masses of the expected order |(3×10⁶M_)|, even the outermost is doomed to spiral into the center within a Gyr. The subsequent evolution is unclear, but it will almost certainty be violent. This suggests that the Galactic center is subjected to starbursts.
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Stark et al. (1991) studied this question.