Laboratory And Astronomical Discovery Of Hydromagnesium Isocyanide

We report on the detection of hydromagnesium isocyanide, HMgNC, in the laboratory and in the carbon-rich evolved star IRC+10216. The J = 1-0 and J = 2-1 lines were observed in our microwave laboratory equipment in Valladolid with a spectral accuracy of 3 kHz. The hyperfine structure produced by the nitrogen atom was resolved for both transitions. Four rotational lines of this species, J = 8-7, J = 10-9, J = 12-11, and J = 13-12, have been detected toward IRC+10216. First results for another metal bearing species are also reported