Sentences with phrase «stars wobble»

He said he gave them a great interview, but because he didn't talk in sound bites, they only took one part, something about him saying stars wobble — while doing a little dance.

New research shows that star - snuggling hot Jupiters, despite being only a thousandth of the mass of their host suns, make their host stars wobble like a spinning top.

I was particularly delighted to make the Doppler measurements at the Keck Observatory, showing that the star wobbled due to the gravitational pull by the planet.

Its express purpose is to detect minute star wobbles and the potentially life - supporting planets those wobbles imply.

That will provide such a high resolution that the telescope won't need to bother with star wobbles.

With such precision, star wobbles shouldn't be a problem.

The velocity at which the star wobbles under the planet's influence, on the other hand, reveals the object's mass.

Two teams of astronomers used the light's changing wavelength to calculate the speed at which the stars wobbles; from this speed, they inferred the planet's mass and, using previously published size measurements, calculated its density.

In 1963, Peter van de Kamp announced that Barnard's star wobbled, as if a planet orbited the star.

The more mass a planet has, and the closer it is to the star, the more it makes that star wobble.

This second-most prolific planet - hunting technique looks for the slight shift in the wavelength of the light as the star wobbles due to the gravitational pull of the planet.

Not exact matches

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As instruments improved, astronomers detected smaller wobbles caused by smaller planets, until in 2004 a team using the Hobby - Eberly Telescope was arguably the first to find a super-Earth, 55 Cancri e. Others were revealed when their gravity briefly magnified the light of a distant star, a process known as gravitational lensing.

Astronomers saw one transit in 1999 for a Jupiter - size planet originally found via the wobbling of its star (ScienceNOW, 30 November 1999).

In the 1990s the first discovered exoplanets (planets orbiting other stars) were Jupiter - like giants, betrayed by the slight gravitational wobbles in the motion of their parent stars.

Some candidates can be checked further using another technique that looks for «wobbles» in the star caused by the gravitational tug of an orbiting body, but Kepler 452 b is too distant and small for that.

The star had a known Jupiter - size companion, but Santos and his colleagues found an extra tiny wobble on a regular cycle lasting 9.5 days.

A star tugged by an orbiting planet will wobble slightly, which can be detected as a regular shift in the star's color corresponding to the time the planet requires to complete an orbit.

Mikko Tuomi, of the University of Hertfordshire in England, and his colleagues examined data taken by telescopes in Chile, Hawaii and Australia that looks for wobbles in a star's movement that could be due to planets» gravitational tug.

Final confirmation that the planet is real requires a few more measurements of the parent star's wobble later this year, he notes.

Most planet hunters watch for wobbles in the light from stars, which arise from the back - and - forth gravitational tugs of unseen companions.

That wobble is a whisper that speaks volumes, revealing that this world is just one third more massive than Earth and resides in an 11 - day orbit some seven million kilometers from its star.

These are about 5 to 10 times the mass of Earth, and we find them by looking at the gravitational wobble that the planet induces in the star.

A close - in planet will have a stronger gravitational tug on its star, making it easier to detect the star's wobble.

The two main methods — measuring the wobble of stars caused by the gravitational tug of an orbiting planet and measuring the periodic dimming of a star as a planet passes in front — both favor big planets in close orbits.

Mayor and his colleagues showed instead that it was possible, through a technique called astrometry, to detect the slight wobble in a star's light caused by the gravitational pull of an orbiting planet.

Although the planets are too faint to be seen directly, their motions cause the star's spectrum to wobble back and forth across the digital detector of an astronomical telescope.

But the region between those outlying neighborhoods and the close - in domains of hot Jupiters and super-Earths remains stubbornly out of reach: too close to the star for direct imaging, too far for indirect techniques relying on stellar wobbles or dimming.

Instead, astronomers look for wobbles in the star itself, indicating that something nearby is tugging on it gravitationally.

Bower says his team next will be taking more precise measurements of nearby low - mass stars to detect the telltale wobble in their motion that reveals orbiting extrasolar planets.

Conventionally, astronomers measure the mass of an exoplanet by measuring the tiny wobbles of the parent star induced by the planet's gravity.

To catalog it, the planet - finding astronomers added a lowercase b, after other classification schemes that deem the star itself A. Astronomers used the «wobble» method to detect 51 Pegasi b, in which the planet's gravitational tug alters its star's light.

In principle, a firm number is possible by tracking the tiny wobbles in the star's position in the sky.

While the HARPS team monitors nearby stars for telltale wobbles caused by orbiting planets, Kepler scientists search a wide field of faraway stars, watching for planets that become silhouetted against their suns.

Using four years of data from the La Silla Observatory in Chile, they looked for a periodic wobble in the light from Alpha Centauri B, a star just 4.3 light years away.

SIM would easily be able to spot the wobble of our sun caused by Jupiter from a distance of 30 light - years — and there are about 400 stars within that distance of Earth.

The two methods of detecting extrasolar planets, nicknamed «wobble and blink,» involve plotting tiny shifts in a star's motion caused by the gravitational tug of its orbiting planets, and catching the slight dimming in a star's light that occurs whenever a planet passes between the star and an observer's telescope.

To spot the wobble, researchers using instruments like HARPS build up a reference spectrum for the star — how brightly it shines at each wavelength — as if it is at rest.

HARPS is an instrument that measures the wobble caused by a planet's gravitational tug on its host star, so it can be used to estimate planetary mass.

One key part of follow - up observations is measuring a planet's mass, which must be found by a different method, such as detecting the back - and - forth wobble of a parent star caused by the planet's mass as it orbits.

It has larger shifts because the exoplanet in its orbit is traveling much faster than its parent star is wobbling.

In addition to the first set of shifts caused by the star's wobble, they found a second set of shifts, much fainter and with higher redshifts and blueshifts.

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.

The 25,800 - year wobble of Earth's axis allows a procession of stars to take turns being polestar.

Although hundreds of exoplanets had already been found orbiting sun - like stars throughout the Milky Way, they had been discovered by indirect means — astronomers had inferred the presence of a planet by observing the dimming effects or gravitational wobble an orbiting companion induces on its parent star.

Such evidence would include unusual rotational wobbles, which would result from the disturbance of having swallowed a planet, or unusual chemical signatures — containing elements that stars wouldn't have produced themselves.

Update on 16 September 2009: After observing the host star for 70 hours to measure how it wobbled in response to tugs from orbiting planets, astronomers have pinned down the mass of COROT - Exo - 7b.

Most were detected by the wobbles they induce in their host stars or by the starlight they block as they pass in front of their stars as seen from Earth.

To do that, researchers must search for the subtle wobbles the orbiting planet induces in its host star, a difficult task since the star's own roiling activity can mask the subtle gravitational tugs of a lightweight planet.

As an object orbits a star, its gravitational pull causes the star to wobble back and forth.