Photodesorption of H2O, HDO, and D2O ice and its impact on fractionation Carina Arasa, Jesper Koning, Geert-Jan Kroes, Catherine Walsh and Ewine F. van Dishoeck A&A, 575 (2015) A121 Published online: 09 March 2015 DOI: 10.1051/0004-6361/201322695