Photostability and spectral features of superhydrogenated polycyclic aromatic hydrocarbons
Molecules of polycyclic aromatic hydrocarbons (PAHs) very likely exist in the interstellar medium. Depending on outer conditions the same PAHs may contain different number of hydrogen atoms, including they can be saturated by hydrogen, or, in other words, be superhydrogenated (H-PAHs). This state of PAHs is characterised by poorer stability relative to the same molecules with normal or small number of hydrogen atoms. H-PAHs have distinctive features in infrared emission spectra. This work is devoted to investigation of the features of H-PAHs and their stability to ultraviolet radiation.