| Issue |
EAS Publications Series
Volume 75-76, 2015
Conditions and Impact of Star Formation
|
|
|---|---|---|
| Page(s) | 259 - 263 | |
| Section | Star Formation Resolved: High Mass, Low Mass, and Planetary Systems | |
| DOI | https://doi.org/10.1051/eas/1575051 | |
| Published online | 20 May 2016 | |
R. Simon, R. Schaaf and J. Stutzki (eds)
EAS Publications Series, 75–76 (2015) 259-263
Water transport from collapsing prestellar cores to forming disks: evolution of the HDO/H2O ratio
1 Leiden Observatory, Leiden University, PO Box 9513, 2300 RA, The Netherlands
2 Max-Planck-Institut für Extraterrestrische Physik, Giessenbachstrasse, Garching, Germany
We investigate the transport of H2O and HDO ices from the collapse of rotating cores to the formation of disks. We adopt a two-dimensional physical model in order to trace fluid parcels, in which molecular evolution is simulated using a gas-ice chemical model. We find that water ice accreting from the protostellar envelope onto the disks can have a variation of the HDO/H2O ratio, reproducing the variation of the HDO/H2O ratio observed in comets. The result suggests that processing of water in the disk itself is not necessarily required to account for the variation of the HDO/H2O ratio in comets.
© EAS, EDP Sciences, 2016