Sentences with phrase «measure radial velocities»

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).

They then calculated the size, position and mass of K2 - 229b by measuring the radial velocity of the star, and finding out how much the starlight «wobbles» during orbit, due to the gravitational tug from the planet, which changes depending on the planet's size.

There are several ways to search for planets, one of which is measuring the radial velocity, or the «wobble» of the star due to the gravitational pull of a host planet.

He then relates what drove the development of a spectrograph called ELODIE, designed to offer very high sensitivity in measuring the radial velocities of stars.

Not exact matches

HARPS - North detects planets using the radial velocity method, which allows astronomers to measure a planet's mass.

Using the High Accuracy Radial Velocity Planet Searcher, or HARPS, at the European Southern Observatory in Chile, his team measured the planet's gravitational influence on its parent star.

Using the ten - meter Keck I telescope fitted with the HIRES instrument, the team employed the radial velocity method to measure how much an orbiting planet causes its star to wobble, to determine the planet's mass.

Other instruments, such as HARPS (High Accuracy Radial velocity Planet Searcher) at the La Silla Observatory, could measure a planet's wobbles in order to estimate its mass.

Astronomers detected Ross 128 b using the European Southern Observatory's High Accuracy Radial - velocity Planet Searcher (HARPS) at the La Silla Observatory in Chile and measured the slight «wobbles» of the star caused by the orbiting exoplanet.

We then measured the planet mass by acquiring twelve radial velocity (RV) measurements of the system using HIRES on the 10 - m Keck I Telescope.

We measure eclipse timing variations (ETVs), which are then combined with the single - lined radial velocity measurements to yield masses in a manner equivalent to double - lined spectroscopic binaries.

On November 1, 2010, a team of astronomers working with the NASA - UC Eta - Earth Survey revealed the detection of a super-Earth in a torch orbit with a minimum of 8.2 + - 1.2 Earth - masses around BD +26 2184, using radial - velocity measures from the Keck Observatory's High Resolution Echelle Spectrometer (HIRES).

For K2 - 38, we measured precise radial velocities using Keck / HIRES and provide initial estimates of the planet masses.

Confirming that an exoplanet is real typically relies on measuring the planet's mass, using a technique known as «radial velocity».

The radial velocity technique measures the speed of this wobbling motion.

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.

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.

By far the most successful technique for finding and studying extrasolar planets has been the radial velocity method, which measures the motion of host stars in response to gravitational tugs by their planets.

In 2012, astronomers announced they'd found evidence for five planets between two and seven times the mass of the Earth, using the so - called radial velocity or «wobble» method, which measures the gravitational tug a planet exerts on its star.

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.