Detection of the hydroperoxyl radical HO2 toward ρ Ophiuchi A - Additional constraints on the water chemical network

  title={Detection of the hydroperoxyl radical HO2 toward $\rho$ Ophiuchi A - Additional constraints on the water chemical network},
  author={B{\'e}reng{\`e}re Parise and Per Bergman and Fujun Du},
  journal={Astronomy and Astrophysics},
Context. Hydrogen peroxide (HOOH) was recently detected toward ρ Oph A. Subsequent astrochemical modeling that included reactions in the gas phase and on the surface of dust grains was able to explain the observed abundance, and highlighted the importance of grain chemistry in the formation of HOOH as an intermediate product in water formation. This study also predicted that the hydroperoxyl radical HO2, the precursor of HOOH, should be detectable. Aims. We aim at detecting the hydroperoxyl… 

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