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Physics, Astronomy & Cosmology / Re: Star distance appearences
« on: 17/08/2022 16:07:58 »Quote from: bored chemistIt might be possible to disentangle them.
- The spectrum also allows you to determine the temperature more accurately than just the colour, as some spectral lines are more prominent in certain temperature ranges.
There is also spectral line spreading. Since the atoms of the star's surface are moving in random directions, the light coming from them will show a small varation of Doppler shifts. The hotter the surface, the greater the range. This leads to a slight blurring of the spectral lines, with cooler stars blurred less, and hotter stars blurred more.