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Proving a negative: what is the gas/dust ratio in protoplanetary disks?

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If you have a question about this talk, please contact Ed Gillen.

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Gas is destiny for planet formation. The spectacular ALMA images of protoplanetary disks masquerade an embarrassing ignorance about their gas content. Estimates for the gas mass in the closest disk to us vary by two orders of magnitude. I will present ALMA surveys that highlight this problem and discuss possible ways to reconcile the disparate measurements.

This talk is part of the Exoplanet Seminars series.

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