(spectral lines specific to magnesium)
Magnesium absorption lines are detected in the interstellar medium
(including in distant galaxies), in some clouds formed
from it, and in stars. Among the lines:
- Mg II doublet consisting of lines at 2795 Å and 2802 Å.
- Mg II doublet consisting of lines at 1239 Å and 1240 Å.
- Mg I line at 2852 Å.
Some are used to determine the kinematics of gas
clouds through analysis of the spectral line shape.