Question

What is spectroscopic parallax?

Answer 1

${} \huge \bf \red{Spectroscopic \: parallax}$

Spectroscopic parallax is an astronomical method for measuring the distances to stars. Despite its name, it does not rely on the geometric parallax effect. This technique can be applied to any main sequence star for which a spectrum can be recorded.

Answer 2

Spectroscopic parallax is an astronomical method for measuring the distances to stars. Despite its name, it does not rely on the geometric parallax effect. This technique can be applied to any main sequence star for which a spectrum can be recorded. The method depends on the star being sufficiently bright to provide a measurable spectrum, which as of 2013 limits its range to about 10,000 parsecs.[1]