Photodissociation branching ratios of 13C16O and 12C18O in the vacuum ultraviolet region from 107 800 to 109 700 cm−1Xiaoping Chi, Pan Jiang, Qihe Zhu, Min Cheng and Hong GaoA&A, 637 (2020) A37DOI: https://doi.org/10.1051/0004-6361/202037453