First detection of radio recombination lines of carbon/oxygen using TMRT. The white line shows the RRLs of ions of C and/or O detected by TMRT. The green areas are the modeled emission of ion RRLs. The green dotted lines are the modeled emission, taking into account all RLLs and molecular lines. The background is the image of the heart-shaped Orion nebula (M42), with Orion KL located within the lower-left bright region of M42, credit to Shawn Nielsen. (Image by SHAO)
A research team from the Shanghai Astronomical Observatory (SHAO) of the Chinese Academy of Sciences has detected radio recombination lines (RRLs) of ions heavier than helium for the first time, using the TianMa 65-m Radio Telescope (TMRT). These lines were assigned to carbon and/or oxygen ions.
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