High Accuracy Radial Velocity Planet Searcher
Gliese 3634 b was one of a sample of over 300 very-low-mass stars targeted by astronomers in search of planets that may orbit such stars. Using the High Accuracy Radial Velocity Planet Searcher (HARPS) at La Silla Observatory in Chile, six years of radial velocity data led the astronomers in the discovery of eleven other planets. After these discoveries, the astronomers chose to refocus their search on short-period planets, hoping to follow up after discoveries using the radial velocity method with a search for planets that also transited, or crossed in front of, their host stars as seen from Earth.