How do we use h-r diagrams to find the distances to stars?
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Here are the steps you use to find a star's distance using the spectroscopic parallax method:
Determine the star's spectral type from spectroscopy and measure the star's apparent brightness (flux).
Use a calibrated main sequence to get the star's luminosity.
Determine the star's spectral type from spectroscopy and measure the star's apparent brightness (flux).
Use a calibrated main sequence to get the star's luminosity.
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