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The TW Hya Rosetta Stone Project III: Resolving the Gaseous Thermal Profile of the Disk
Jenny Calahan, Edwin Bergin, Ke Zhang +16
The thermal structure of protoplanetary disks is a fundamental characteristic of the system that has wide reaching effects on disk evolution and planet formation. In this study, we…
The TW Hya Rosetta Stone Project II: Spatially resolved emission of formaldehyde hints at low-temperature gas-phase formation
Jeroen Terwisscha van Scheltinga, Michiel R. Hogerheijde, L. Ilsedore Cleeves +15
Formaldehyde (HCO) is an important precursor to organics like methanol (CHOH). It is important to understand the conditions that produce HCO and prebiotic molecules dur…
The TW Hya Rosetta Stone Project I: Radial and vertical distributions of DCN and DCO+
Karin I. Oberg, L. Ilsedore Cleeves, Jennifer B. Bergner +16
Molecular D/H ratios are frequently used to probe the chemical past of Solar System volatiles. Yet it is unclear which parts of the Solar Nebula hosted an active deuterium fraction…
An ALMA survey of Orionis disks: from supernovae to planet formation
Megan Ansdell, Thomas J. Haworth, Jonathan P. Williams +8
Protoplanetary disk surveys by the Atacama Large Millimeter/sub-millimeter Array (ALMA) are now probing a range of environmental conditions, from low-mass star-forming regions like…
Temperature structures of embedded disks: young disks in Taurus are warm
Merel L. R. van 't Hoff, Daniel Harsono, John J. Tobin +6
The chemical composition of gas and ice in disks around young stars set the bulk composition of planets. In contrast to protoplanetary disks (Class II), young disks that are still…
Solving grain size inconsistency between ALMA polarization and VLA continuum in the Ophiuchus IRS 48 protoplanetary disk
Satoshi Ohashi, Akimasa Kataoka, Nienke Van der Marel +6
The protoplanetary disk around Ophiuchus IRS 48 shows an azimuthally asymmetric dust distribution in (sub-)millimeter observations, which is interpreted as a vortex, where millimet…