- #1
21joanna12
- 126
- 2
I can't seem to find an answer to this quick question: which part of the star causes the observed spectral lines? As I understand, the photosphere is the deepest visible layer of the star, and then light passes through the chromosphere and the corona. I would think that both the chromosphere and corona would cause spectral lines, but at the same time I have read that both of these layers have a higher temperature than the photosphere, and spectral lines can only be formed if the light passes through a cooler gas... Would the photosphere be producing its own spectral lines too?
Thank you in advance :)
Thank you in advance :)