Sentences with phrase «doppler radial velocity»
When used in conjunction with octagonal fibers, this device yields very high scrambling gains and greatly desensitizes the fibe... ▽ More We present the design and test results of a compact optical fiber double - scrambler for high - resolution Doppler radial velocity instruments.
https://arxiv.org/
Highly temperature and pressure stabilized spectrographs allow us to better calibrate out instrumental drifts, thereby helping in distinguishing instrumental noise from astrophysical stel... ▽ More Insufficient instrument thermo - mechanical stability is one of the many roadblocks for achieving 10cm / s Doppler radial velocity (RV) precision, the precision needed to detect Earth - twins orbiting Solar - type stars.
Abstract: We present the design and test results of a compact optical fiber double - scrambler for high - resolution Doppler radial velocity instruments.
Laughlin is a Co-I on the Lick Carnegie Exoplanet Survey, and along with team members Steve Vogt, Paul Butler, Eugenio Rivera and Stefano Meschiari, is using the Keck, Magellan and AAT telescopes to discover and characterize planets with the Doppler radial velocity technique.
Abstract: We have constructed a thermally compensated field - widened monolithic Michelson interferometer that can be used with a medium - resolution spectrograph to measure precise Doppler radial velocities of stars.
Not exact matches
And radial velocity searches, which look for Doppler shifts in a star's light as it wobbles under the influence of an orbiting companion, are more attuned to massive planets that induce greater gravitational wobbles in their host stars.
The planet was found using the radial velocity method: Telescopes scrutinize a star's light to see if its frequency is periodically stretched and squeezed by the Doppler effect as the star is tugged, first away and then toward us, by an orbiting planet.
The study culminates many years of effort by an international team of scientists who have discovered a large number of the satellite galaxies, developed new techniques to measure their distances, and have used the Keck Observatory with colleagues to measure their radial velocities, or Doppler shifts (the speed of the galaxy relative to the Sun).
The planet is confirmed via both the detection of the radial velocity orbit, and the Doppler tomographic detection of the shadow of the planet over two transits.
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.
Archival and follow - up photometry, the Gaia parallax, radial velocities, Doppler tomography, and adaptive optics imaging were used to confirm the planetary nature of the companion and characterize the system.
The planet is confirmed via both the detection of the radial velocity orbit, and the Doppler tomographic detection of the sha... ▽ More We present the discovery of a hot - Jupiter transiting the V = 9.23 mag main - sequence A-star KELT - 17 (BD +14 1881).
[94] Proxima Centauri b was found using the radial velocity method, where periodic Doppler shifts of spectral lines of the host star suggest an orbiting object.
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.
This temperature stability is comparable to the best stability demonstrated for Doppler spectrometers currently achieving 1 m s $ ^ -LCB--1 -RCB- $ radial velocity precision.
A spectrograph spreads out the light gathered by a telescope so that it can be analysed to determine properties of celestial objects such as chemical composition or their radial velocity through the Doppler effect.
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.
The 1995 discovery of 51 Peg b, through Doppler velocity techniques, ushered in a new era of radial velocity discovery.
HARPS has been enormously successful at detecting exoplanets using the radial velocity method, or measuring the gravitational tugs on stars by their planets by watching the stars» spectral lines «wobble» back and forth due to the Doppler effect.
The combination of radial velocity and imaging follow - up was represented by the California Planet Survey Targeting Benchmark - objects with Doppler Spectroscopy (CPS / TRENDS), a consortium of US - based universities and researchers.