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- W3199198367 abstract "Constraining the distribution of gas and dust in the inner 20 au of protoplanetary disks is difficult. At the same time, this region is thought to be responsible for most planet formation, especially around the water ice line at 3-10 au. Under the assumption that the gas is in a Keplerian disk, we use the exquisite sensitivity of the Molecules with ALMA at Planet-forming Scales (MAPS) ALMA large program to construct radial surface brightness profiles with a ~3 au effective resolution for the CO isotopologue J=2-1 lines using the line velocity profile. IM Lup reveals a central depression in 13CO and C18O that is ascribed to a pileup of ~500 $M_oplus$ of dust in the inner 20 au, leading to a gas-to-dust ratio of around $ 10) and that the dust gap is gas-rich enough to have optically thick C18O." @default.
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- W3199198367 date "2021-09-13" @default.
- W3199198367 modified "2023-10-18" @default.
- W3199198367 title "Molecules with ALMA at Planet-forming Scales (MAPS). XV. Tracing protoplanetary disk structure within 20 au" @default.
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