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A Submillimeter Survey of CS Excitation in Protoplanetary Disks: Evidence of X-ray-Driven Sulfur Chemistry
Charles J. Law, Romane Le Gal, Karin I. Öberg +12
The sulfur chemistry in protoplanetary disks influences the properties of nascent planets, including potential habitability. Although the inventory of sulfur molecules in disks has…
Discovery of carbon monoxide emission from five debris disks around young A-type stars
A. Moór, P. Ábrahám, Á +7
Over the past fifteen years, surveys mainly at millimeter wavelengths have led to the discovery of 20 gas-bearing debris disks, most of them surrounding young intermediate-ma…
SO emission in the dynamically perturbed protoplanetary disks around CQ Tau and MWC 758
Francesco Zagaria, Haochang Jiang, Gianni Cataldi +25
We report the serendipitous detection of the SO (219.949 GHz) rotational transition in archival Atacama Large Millimeter/submillimeter Array (ALMA) observations of th…
ExoALMA XIII. gas masses from N2H+ and C18O: a comparison of protoplanetary gas disk mass measurement techniques
Leon Trapman, Cristiano Longarini, Giovanni P. Rosotti +37
The gas masses of protoplanetary disks are important but elusive quantities. In this work we present new ALMA observations of N2H+ (3-2) for 11 exoALMA disks. N2H+ is a molecule se…
exoALMA VII: Benchmarking Hydrodynamics and Radiative Transfer Codes
Jaehan Bae, Mario Flock, Andres Izquierdo +25
Forward modeling is often used to interpret substructures observed in protoplanetary disks. To ensure the robustness and consistency of the current forward modeling approach from t…
exoALMA. VI. Rotating under Pressure: Rotation curves, azimuthal velocity substructures, and pressure variations
Jochen Stadler, Myriam Benisty, Andrew J. Winter +36
The bulk motion of the gas in protoplanetary disks around newborn stars is nearly Keplerian. By leveraging the high angular and spectral resolution of ALMA, we can detect small-sca…