41. It was also planned that the telescope would be used for spectral line work at millimeter wavelengths. 42. The spectral lines of carbon monoxide reveal that the gas is dense, and warm and fairly opaque. 43. Curiously, very defined spectral lines appeared. 44. This piece of plasma will then emit strongly at the spectral lines and weakly between the spectral lines. 45. Beyond this level, spectral lines merge. 46. This piece of plasma will then emit strongly at the spectral lines and weakly between the spectral lines . 47. These observed spectral lines are due to the electron making transitions between two energy levels in the atom. 48. Type IIn supernovae are characterised by additional narrow spectral lines produced in a dense shell of circumstellar material. 49. This gives a stronger spectral line . 50. The spectral lines involved are broadened.
