Tootfinder

CO desorption from interstellar icy grains induced by IR excitation of superhydrogenated PAHs
L. Slumstrup, J. D. Thrower, A. T. Hopkinson, G. Wenzel, R. Jaganathan, J. G. M. Schrauwen, B. Redlich, S. Ioppolo, L. Hornek{\ae}r
https://arxiv.org/abs/2507.07896

CO desorption from interstellar icy grains induced by IR excitation of superhydrogenated PAHs
Infrared (IR) radiation dominates dense, interstellar clouds, yet its effect on icy grains remains largely unexplored. Its potential role in driving the photodesorption of volatile species from such grains has recently been demonstrated, providing a crucial link between the solid state reservoir of molecules and the gas phase. In this work, we investigate IR-induced photodesorption of CO for astrophysically relevant ice systems containing perhydropyrene (PHP). This fully superhydrogenated versi…