Astronomers Uncover New Way to Measure the Speeds of Stars

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Mercury
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Astronomers Uncover New Way to Measure the Speeds of Stars

Post by Mercury » Thu Jan 13, 2022 7:52 pm

by Ken Croswell

New observations now allow the seemingly impossible: measuring the speeds of some stars along the line of sight without ascertaining their Doppler shifts. The new method can deliver 1 kilometer-per-second accuracy for some of our nearest neighbors, including Proxima Centauri, Barnard's Star, Lalande 21185, and Kapteyn's Star.

Link: Proceedings of the National Academy of Sciences