Our results effectively show that a Michelson interferometer coupled to a spectrograph allows precise measurements of barycentric radial velocities even at a modest spectral resolution of R ~ 5100. (arxiv.org)
Abstract: We demonstrate the ability to measure precise stellar barycentric radial velocities with the dispersed fixed - delay interferometer technique using the Exoplanet Tracker (ET), an instrument primarily designed for precision differential Doppler velocity measurements using this technique. (arxiv.org)
The requirements of specialized machines drove a proliferation of timescales customized to each user: Universal time, sidereal time, ephemeris time, barycentric time, and terrestrial time are just a few examples. (discovermagazine.com)