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Ro-vibrational excitation of an organic molecule (HCN) in protoplanetary disks
Simon Bruderer, Daniel Harsono, Ewine F. van Dishoeck
(Abridged) Organic molecules are important constituents of protoplanetary disks. Their ro-vibrational lines observed in the near- and mid-infrared are commonly detected toward T Ta…
Methanol Along the Path from Envelope to Protoplanetary Disc
Maria N. Drozdovskaya, Catherine Walsh, Ruud Visser +2
Interstellar methanol is considered to be a parent species of larger, more complex organic molecules. A physicochemical simulation of infalling parcels of matter is performed for a…
ALMA observations of the kinematics and chemistry of disc formation
Johan E. Lindberg, Jes K. Jørgensen, Christian Brinch +6
Context: The R CrA cloud hosts a handful of Class 0/I low-mass young stellar objects. The chemistry and physics at scales AU in this cloud are dominated by the irradiation f…
ALMA hints at the presence of two companions in the disk around HD 100546
Catherine Walsh, Attila Juhasz, Paola Pinilla +10
HD 100546 is a well-studied Herbig Be star-disk system that likely hosts a close-in companion with compelling observational evidence for an embedded protoplanet at 68 AU. We presen…
The deuterium fractionation of water on solar-system scales in deeply-embedded low-mass protostars
M. V. Persson, J. K. Jørgensen, E. F. van Dishoeck +1
(Abridged) The water deuterium fractionation (HDO/HO abundance ratio) has traditionally been used to infer the amount of water brought to Earth by comets. Measuring this ratio…