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13 papers · 2 filters
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…
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…
Water shielding in the terrestrial planet-forming zone: Implication for inner disk organics
Sara E. Duval, Arthur D. Bosman, Edwin A. Bergin
The chemical composition of the inner region of protoplanetary disks can trace the composition of planetary building material. The exact elemental composition of the inner disk has…
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…
Water UV-Shielding in the Terrestrial Planet-Forming Zone: Implications for Oxygen-18 Isotope Anomalies in H2-18O Infrared Emission and Meteorites
Jenny K. Calahan, Edwin A. Bergin, Arthur D. Bosman
An understanding of the abundance and distribution of water vapor in the innermost region of protoplanetary disks is key to understanding the origin of habitable worlds and planeta…