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Mapping Protoplanetary Disk Vertical Structure with CO Isotopologue Line Emission
Charles J. Law, Richard Teague, Karin I. Öberg +21
High spatial resolution observations of CO isotopologue line emission in protoplanetary disks at mid-inclinations (30-75°) allow us to characterize the gas structure in…
UV-driven Chemistry as a Signpost for Late-stage Planet Formation
Jenny K. Calahan, Edwin A. Bergin, Arthur D. Bosman +14
The chemical reservoir within protoplanetary disks has a direct impact on planetary compositions and the potential for life. A long-lived carbon-and nitrogen-rich chemistry at cold…
A localized kinematic structure detected in atomic carbon emission spatially coincident with a proposed protoplanet in the HD 163296 disk
Felipe Alarcón, Edwin Bergin, Richard Teague
Over the last five years, studies of the kinematics in protoplanetary disks have led to the discovery of new protoplanet candidates and several structures linked to possible planet…
A kinematic excess in the annular gap and gas depleted cavity in the disc around HD 169142
Himanshi Garg, Christophe Pinte, Iain Hammond +6
We present ALMA band 6 images of the 12CO, 13CO and C18O J=2-1 line emissions for the circumstellar disc around HD 169142, at ~8 au spatial resolution. We resolve a central gas dep…
Mapping the Complex Kinematic Substructure in the TW Hya Disk
Richard Teague, Jaehan Bae, Sean M. Andrews +6
We present ALMA observations of CO and CS emission from the disk around TW~Hydrae. Both molecules trace a predominantly Keplerian velocity structure, although a…
Molecules with ALMA at Planet-forming Scales (MAPS). A Circumplanetary Disk Candidate in Molecular Line Emission in the AS 209 Disk
Jaehan Bae, Richard Teague, Sean M. Andrews +29
We report the discovery of a circumplanetary disk (CPD) candidate embedded in the circumstellar disk of the T Tauri star AS 209 at a radial distance of about 200 au (on-sky separat…
CO Line Emission Surfaces and Vertical Structure in Mid-Inclination Protoplanetary Disks
Charles J. Law, Sage Crystian, Richard Teague +18
High spatial resolution CO observations of mid-inclination (30-75°) protoplanetary disks offer an opportunity to study the vertical distribution of CO emission and temperature. The…
Unveiling the outer dust disc of TW Hya with deep ALMA observations
John D. Ilee, Catherine Walsh, Jeff Jennings +5
The radial extent of millimetre dust in protoplanetary discs is often far smaller than that of their gas, mostly due to processes such as dust growth and radial drift. However, it…
Gas and Dust Shadows in the TW Hydrae Disk
Richard Teague, Jaehan Bae, Myriam Benisty +4
We present new observations of CO J=2-1 emission from the protoplanetary disk around TW Hya. Emission is detected out to 240 au (4") and found to exhibit azimuthal variations up to…
Gas Disk Sizes from CO Line Observations: A Test of Angular Momentum Evolution
Feng Long, Sean M. Andrews, Giovanni Rosotti +7
The size of a disk encodes important information about its evolution. Combining new Submillimeter Array (SMA) observations with archival Atacama Large Millimeter Array (ALMA) data,…
Polarization from Aligned Dust Grains in the Pic Debris Disk
Charles L. H. Hull, Haifeng Yang, Paulo C. Cortés +8
We present 870 m ALMA polarization observations of thermal dust emission from the iconic, edge-on debris disk Pic. While the spatially resolved map does not exhibit detectab…
Kinematic Structures in Planet-Forming Disks
Christophe Pinte, Richard Teague, Kevin Flaherty +3
The past 5 years have dramatically changed our view of the disks of gas and dust around young stars. Observations with the Atacama Large Millimeter/submillimeter Array (ALMA) and e…