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H2O distribution in the disc of HD 100546 and HD 163296: The role of dust dynamics and planet-disc interaction
Astronomy and Astrophysics
[Abridged] Far-infrared observations with Herschel revealed a surprisingly low abundance of cold-water reservoirs in protoplanetary discs. On the other hand, a handful of discs show emission of hot water transitions excited at temperatures above a few hundred Kelvin. In particular, the protoplanetary discs around the Herbig Ae stars HD 100546 and HD 163296 show opposite trends in terms of cold versus hot water emission: in the first case, the ground-state transitions are detected and the high-Jdoi:10.1051/0004-6361/202244104 fatcat:nroe4htyyjd67dq64wqihdvhha