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- W3211638421 abstract "The Molecules with ALMA at Planet-forming Scales (MAPS) Large Program provides a unique opportunity to study the vertical distribution of gas, chemistry, and temperature in the protoplanetary disks around IM Lup, GM Aur, AS 209, HD 163296, and MWC 480. By using the asymmetry of molecular line emission relative to the disk major axis, we infer the emission height (z) above the midplane as a function of radius (r). Using this method, we measure emitting surfaces for a suite of CO isotopologues, HCN, and C2H. We find that 12CO emission traces the most elevated regions with , while emission from the less abundant 13CO and C18O probes deeper into the disk at altitudes of . C2H and HCN have lower opacities and signal-to-noise ratios, making surface fitting more difficult, and could only be reliably constrained in AS 209, HD 163296, and MWC 480, with , i.e., relatively close to the planet-forming midplanes. We determine peak brightness temperatures of the optically thick CO isotopologues and use these to trace 2D disk temperature structures. Several CO temperature profiles and emission surfaces show dips in temperature or vertical height, some of which are associated with gaps and rings in line and/or continuum emission. These substructures may be due to local changes in CO column density, gas surface density, or gas temperatures, and detailed thermochemical models are necessary to better constrain their origins and relate the chemical compositions of elevated disk layers with those of planet-forming material in disk midplanes. This paper is part of the MAPS special issue of the Astrophysical Journal Supplement." @default.
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- W3211638421 date "2021-11-01" @default.
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- W3211638421 title "Molecules with ALMA at Planet-forming Scales (MAPS). IV. Emission Surfaces and Vertical Distribution of Molecules" @default.
- W3211638421 cites W1614615863 @default.
- W3211638421 cites W1977430478 @default.
- W3211638421 cites W1996538812 @default.
- W3211638421 cites W2000929508 @default.
- W3211638421 cites W2011301426 @default.
- W3211638421 cites W2014085592 @default.
- W3211638421 cites W2023574719 @default.
- W3211638421 cites W2025895995 @default.
- W3211638421 cites W2042484924 @default.
- W3211638421 cites W2051577178 @default.
- W3211638421 cites W2097976752 @default.
- W3211638421 cites W2099140832 @default.
- W3211638421 cites W2101687185 @default.
- W3211638421 cites W2102797551 @default.
- W3211638421 cites W2115245601 @default.
- W3211638421 cites W2124750810 @default.
- W3211638421 cites W2135625048 @default.
- W3211638421 cites W2137989562 @default.
- W3211638421 cites W2146292423 @default.
- W3211638421 cites W2147841078 @default.
- W3211638421 cites W2267339173 @default.
- W3211638421 cites W2527783445 @default.
- W3211638421 cites W2784180794 @default.
- W3211638421 cites W2804872128 @default.
- W3211638421 cites W2888532099 @default.
- W3211638421 cites W2897307033 @default.
- W3211638421 cites W2903886915 @default.
- W3211638421 cites W2913398280 @default.
- W3211638421 cites W2949159932 @default.
- W3211638421 cites W2972768996 @default.
- W3211638421 cites W2980795582 @default.
- W3211638421 cites W2992990931 @default.
- W3211638421 cites W3009815950 @default.
- W3211638421 cites W3042666245 @default.
- W3211638421 cites W3098805460 @default.
- W3211638421 cites W3098916746 @default.
- W3211638421 cites W3098974664 @default.
- W3211638421 cites W3099125925 @default.
- W3211638421 cites W3099342797 @default.
- W3211638421 cites W3099496406 @default.
- W3211638421 cites W3099707486 @default.
- W3211638421 cites W3100314980 @default.
- W3211638421 cites W3100403874 @default.
- W3211638421 cites W3101282795 @default.
- W3211638421 cites W3101288677 @default.
- W3211638421 cites W3101295510 @default.
- W3211638421 cites W3101430041 @default.
- W3211638421 cites W3101584022 @default.
- W3211638421 cites W3101662524 @default.
- W3211638421 cites W3101779919 @default.
- W3211638421 cites W3101900982 @default.
- W3211638421 cites W3102014803 @default.
- W3211638421 cites W3102083771 @default.
- W3211638421 cites W3102375666 @default.
- W3211638421 cites W3103145119 @default.
- W3211638421 cites W3103385539 @default.
- W3211638421 cites W3103866152 @default.
- W3211638421 cites W3105870319 @default.