Sentences with phrase «doppler velocity 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.
https://arxiv.org/ Not exact matches
Right: A Doppler measurement of velocity, with winds exceeding 135 miles per hour.
However, this would require measurements of Doppler velocity drifts of ∼ 1 centimeter per second per year, and astronomical spectrographs have not yet been calibrated to this tolerance.
The planet has an orbital period of 1.486 days, and radial velocity measurements from the Hobby - Eberly Telescope (HET) show a Doppler signal of 420 + / -15 m.s - 1.
The ECS presented here could potentially provide the stable operating environment required for future compact, «astro - photonic» precise radial velocity (PRV) spectrometers to achieve high Doppler measurement precision with a modest budget.
Measurements collected with the X-SACR are copolar and cross-polar radar reflectivity, Doppler velocity, spectra width and spectra when not scanning, differential Reflectivity (Zdr), correlation coefficient (rho - hv), and specific differential phase (phi - dp).