Abstract:
Identification of the A¹ II -X¹ Ʃ transitions of the CH+ molecules in the solar spectrum was reinvestigated by using new laboratory data on molecules, standard photospheric models, the KPNO and the Liege solar atlases. We believe that CH+ lines may not be detectible in the solar spectrum, though the predicted upper limits of equivalent widths exceed the observed upper limit by a factor of 6. A possible explanation for the absence of CH+ lines is also suggested.
