Double DCO$^+$ Rings Reveal CO Ice Desorption in the Outer Disk Around IM Lup

Öberg, Karin I.,   Furuya, Kenji,   Loomis, Ryan,   Aikawa, Yuri,   Andrews, Sean M.,   Qi, Chunhua,   van Dishoeck, Ewine F.,   & Wilner, David J.

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