Not exact matches
We
derived the radii of the planets from the K2 light curve and used high - precision radial
velocities gathered with the HARPS - N spectrograph for mass
measurements.
Our barycentric radial
velocities,
derived from observations taken at the KPNO 2.1 meter telescope, differ from... ▽ More 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.
By carefully combining position
measurements from digital archives with newer positions measured from images taken during the course of the Pan-STARRS1 survey, they were able to
derive the tangential component of the star's
velocity (across our line of sight).
With a (revised) diameter of 2.63 ± 0.11 times that of Earth, the mass of the planet was
derived from radial -
velocity measurements using the ESO 3.6 - meter telescope and its HARPS spectrograph)(ESO press release; Bean et al, 2010; Charbonneau et al 2009; Geoffrey Marcy, 2009; Rogers and Seager, 2009; Dennis Overbye, New York Times, December 16, 2009; and Ivan Seminuik, New Scientist, December 16, 2009).