May 31, 2023 (v1)
Journal article
Context. The emission from polycyclic aromatic hydrocarbons (PAHs) arises from the uppermost layers of protoplanetary disks, higher than the optical/near-infrared scattered light and similar to the emission from the highly thick 12 CO millimeter lines. The PAH intensity profiles trace the gas distribution and can constrain the penetration depth...
Uploaded on: April 5, 2025