Sentences with phrase «foreground star»

That would make them harder to spot amid the clutter of foreground stars in our galaxy, the team says.

The field is so small that only a few foreground stars in the Milky Way lie within it; thus, almost all of the 3,000 objects in the image are galaxies, some of which are among the youngest and most distant known.

It is impossible to get a good photograph of the entire cluster because the galaxies are faint objects scattered across 15 degrees of the sky, and a large angle photograph would be swamped by thousands of foreground stars in our own galaxy.

A mag 6.5 white foreground star is quite prominent in the NW, about 18» from the cluster's center.

There is also one obvious foreground star in this image, HD112887, an eighth magnitude star 265 light years away - less than one millionth of the distance to the Coma cluster.

This is so narrow, just a few foreground stars in our Milky Way galaxy are visible and are vastly outnumbered by the menagerie of far more distant galaxies, some nearly as faint as 30th magnitude, or nearly four billion times fainter than the limits of human vision.

Astronomers studying distant objects call these stars «foreground stars» and they are often not very happy about them, as their bright light is contaminating the faint light from the more distant and interesting objects they actually want to study.

Microlensing occurs when a foreground star passes close to our line of sight to a more distant background star.

The dip in light when one star eclipses its partner can reveal the foreground star's size.

But other observations need to confirm the true planetary nature of these candidate events, because the observed dips may also be due to an eclipsing binary star in the background whose light blends with the foreground star studied by Kepler.

Except for a few blue, foreground stars, these myriad stars are members of the Milky Way nuclear star cluster, the most massive and densest stellar cluster in the galaxy.

Except for a few blue, foreground stars, the stars are part of the Milky Way's nuclear star cluster, the most massive and densest star cluster in our galaxy.

If one star, however, passes nearly precisely in front of a farther background star, the gravity of the foreground star acts like a giant lens, magnifying the light from the background star.

Without conclusively identifying and characterizing the foreground star, however, astronomers have had a difficult time determining the properties of the accompanying planet.

The foreground star has basically acted as a magnifying lens, focusing the light from the background star for astronomers on Earth to observe.

Microlensing occurs when a foreground star amplifies the light of a background star that momentarily aligns with it.

To refine the target catalogue for the forthcoming Taipan Galaxy Survey, the images of a large number of sources are being visually inspected in order to identify objects that are confused by a foreground star or galaxies that have a distinct multi-component structure.

A phenomenon called gravitational microlensing, where the gravity from a foreground star momentarily bends and amplifies light from a background star, was used to do a statistical search for solar systems like ours.

A planetary companion around the foreground star can produce a variation in the brightening of the background star.

The starlight from the more distant star may become bent around the foreground star by its gravity, causing the light from the background star to brighten for a short period of time.

The exact timing and amount of light amplification can reveal clues to the nature of the foreground star and its accompanying planets.

If the foreground star has planets, then the planets may also amplify the light of the background star, but for a much shorter period of time than their host star.

Should the foreground star have an exoplanet (or a system of exoplanets) in orbit, its additional gravity will create another brightening event, thereby allowing astronomers on Earth to measure the exoplanet's mass and orbit.

The thin, glowing streak slicing across this image cuts a lonely figure, with only a few foreground stars and galaxies in the distant background for company.

The various blue objects in this image are the galaxies (except for the very obvious blue star at the lower - left) and the yellow objects are foreground stars.

Gamma Cygni is actually not part of this nebula, it is a foreground star located half way between us and the nebula.

Contrary to the radial velocity and transit methods which are more widely used for exoplanet discovery, gravitational microlensing can only be used when the light from a distant, background star is magnified by the gravitational field of a closer, foreground star that happens to pass in front, as seen by our line of sight here on Earth.

Another reason is that the Coma cluster lies a long way from the plane of our Galaxy (unlike the Perseus cluster, or the A3627 cluster) and it is largely unobscured by any gas and dust or any foreground stars.