Lupus disks with faint CO isotopologues: low gas/dust or high carbon depletion?

@article{Miotello2017LupusDW,
  title={Lupus disks with faint CO isotopologues: low gas/dust or high carbon depletion?},
  author={Anna Miotello and E. F. van Dishoeck and Jonathan P. Williams and Megan Ansdell and Greta Guidi and Michiel R. Hogerheijde and Carlo Felice Manara and Marco Tazzari and Leonardo Testi and Nienke van der Marel and Sierk E. van Terwisga},
  journal={Astronomy and Astrophysics},
  year={2017},
  volume={599}
}
Context. An era has started in which gas and dust can be observed independently in protoplanetary disks, thanks to the recent surveys with the Atacama Large Millimeter/sub-millimeter Array (ALMA). The first near-complete high-resolution disk survey in both dust and gas in a single star-forming region has been carried out in Lupus, finding surprisingly low gas-to-dust ratios (Ansdell et al. 2016). Aims. The goal of this work is to fully exploit CO isotopologues observations in Lupus, comparing… 
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ALMA Survey of Lupus Protoplanetary Disks II: Gas Disk Radii
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Context. The total gas mass is one of the most fundamental properties of disks around young stars, because it controls their evolution and their potential to form planets. To measure disk gas masses,
Systematic Variations of CO Gas Abundance with Radius in Gas-rich Protoplanetary Disks
CO is the most widely used gas tracer of protoplanetary disks. Its abundance is usually assumed to be an interstellar ratio throughout the warm molecular layer of the disk. But recent observations of
Molecules with ALMA at Planet-forming Scales (MAPS). V. CO Gas Distributions
  • Ke Zhang, A. Booth, +32 authors K. Furuya
  • Physics
    The Astrophysical Journal Supplement Series
  • 2021
Here we present high-resolution (15–24 au) observations of CO isotopologue lines from the Molecules with ALMA on Planet-forming Scales (MAPS) ALMA Large Program. Our analysis employs observations of
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Gas in protostellar disks provides the raw material for giant planet formation and controls the dynamics of the planetesimal-building dust grains. Accurate gas mass measurements help map the observed
Unlocking CO Depletion in Protoplanetary Disks I. The Warm Molecular Layer
CO is commonly used as a tracer of the total gas mass in both the interstellar medium and in protoplanetary disks. Recently there has been much debate about the utility of CO as a mass tracer in
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