Possible OH+ submillimeter emission in Orion-KL.

The OH⁺ molecular ion has not been detected in interstellar clouds so far. Since a possible detection of OH⁺ in Orion-KL would be an independent confirmation of molecular shock waves with or without the presence of magnetic fields (MHD and dissociative), the fine and hyperfine rotational structure of this ion is studied. It is the purpose of the present communication to provide values of transition probabilities for spontaneous emission and intensities for laboratory measured infrared frequencies which should make easier the observational task to search for this ionic species.