Sentences with phrase «background stars»

There is, therefore, a significant risk that multiple stars will be located in a given optimal aperture and thus that a given star is contaminated by a number of background stars.

The cloud contains enough dusty material to completely block the visible light from background stars.

On the other hand, we do not have any prime indications that these stars are contaminated by background stars.

Extremely dense clouds of gas and dust are seen in silhouette, appearing dark against the bright background stars.

We note that the population of background stars in CoRoT is 3 mag fainter than those of Brown.

Because Proxima Centauri is the closest star to our sun (distance, 4.2 light - years), its angular motion across the sky is relatively fast compared to much more distant background stars.

So a number of observational projects have taken a different tack, trying to identify small KBOs by monitoring background stars for sudden dips in brightness that might result from a distant object crossing the line of sight between the star and Earth.

Lupus 4, a spider - shaped blob of gas and dust, blots out background stars like a dark cloud on a moonless night in this intriguing new image.

As light from those faint, background stars passes through the cloud, ices in the cloud will absorb some of the light.

By observing many background stars spread across the sky, astronomers can map ices within the cloud's entire expanse and locate where different ices form.

Composite photo of the slowest - spinning neutron star discovered so far (9 - 2016): background stars photographed in optical wavelengths; colorful cloud is the supernova remnant RCW 103, photographed in X-ray wavelengths, with the white neutron star at its center.

Einstein's work piqued the interest of English astronomer Arthur Eddington, who recognized a great opportunity to test for this light deflection: On May 29, 1919, the sun would conveniently undergo a solar eclipse, which would block out its overwhelming glare, while passing close to a bright group of background stars called the Hyades.

The missing background stars that are currently hidden will then come into view — but only after the passage of millions of years, and they will be outshone by the bright young - born stars in the cloud.

Chauvin and his colleagues even managed to obtain a spectrum of the exoplanet candidate, revealing water vapor in its atmosphere — a sure indication it's not a remote background star.

Terebey concedes the object might be a rogue brown dwarf star or even an unrelated background star.

Specifically, they analyzed radio occultations — made when Voyager 2 sent radio waves through the rings to be detected back on Earth — and stellar occultations, made when the spacecraft measured the light of background stars shining through the rings, which helps reveal how much material they contain.

It was announced this week at the 222nd meeting of American Astronomical Society that Proxima Centauri, a red dwarf and the closest star to the Sun, is predicted to pass in front of two unnamed background stars, one in -LSB-...]

Polarization measurements of 178 reddened background stars, out of the 919 detected sources in the JHKs - bands, reveal B - fields that thread perpendicular to the filament long axis.

The moons Prometheus, Pandora, Janus, Epimetheus, Mimas and Enceladus make an appearance in Cassini's final Saturn mosaic, along with the planet's famous rings and several background stars.

The dust lanes are faintly visible in places, but only where they can be seen in silhouette against background stars.

Was the background beyond Earth «photoshopped» to remove background stars, or is that angle so narrow and the background space so coincidentally»em pty» that no visible stars are there to be seen?»

They find that a spinning naked singularity turns out to be a strong gravitational lens, magnifying the light from background stars more than an ordinary black hole and producing a distinctive pattern of images.

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

Many stars without water were also detected, and these are background stars in the Milky Way.

These materials are dense enough to effectively eclipse the light of background stars.

The Wide Field Imager (WFI) on the MPG / ESO 2.2 - meter telescope at the La Silla Observatory in Chile captured this view of dark cloud Lupus 4 blotting out background stars.

The Kepler photometry of the three stars with S index below 0.13 (KIC 2850378, KIC 11197517 and KIC 11241343) could be contaminated by background stars.

The researchers make a pretty good case of eliminating other possibilities (a background star or galaxy, for example) and all in all it really does look like they caught this planet while it was still accreting material.

The dust in this nebula absorbs and scatters the light from background stars.

When this ancient object passes in front of a background star, the star's light dips — like a mini-eclipse — allowing the astronomers to tease out the mystery world's size, shape and reflectivity.

So when a dim star in our galaxy passes almost directly between Earth and a second star, the gravitational field of the intervening «lens» star bends and magnifies light from the background star, a process called gravitational microlensing.

But side - to - side motion does not affect an object's spectrum, so astronomers must track changes in an object's location relative to background stars.

When a single star acts as the lens, the background star simply brightens and fades.

WFI's large field of view also captures a colossal number of background stars.

Dark cloud obscures hundreds of background stars.»

Now, Pawel Pietrukowicz of Warsaw University in Poland and colleagues have spotted a tiny star in the globular cluster M22 acting as a lens for a background star.

«It's very difficult to see these faint moving objects in front of thousands and thousands of background stars,» Parker says.

Microlensing works on a much smaller scale: Individual stars or planets focus the light of more distant stars, making the background star appear to grow brighter and then dim again.

The duration and strength of such a «gravitational microlensing» event could reveal not only a rogue planet's existence but also its mass, as bigger worlds tend to create longer, stronger amplifications of a background star's light.

When the dwarf, named Stein 2051 B, passed in front of another star from Earth's perspective, Sahu's team followed the position of the background star.

Very rarely, however, one might pass in front of a far - distant background star, creating a detectable blip of light as the planet's gravitational field acts as a magnifying lens.

In fact, a black hole's intense gravitational field would counterintuitively magnify most of a background star's light rather than blocking it at all.

As general relativity predicts, light from the background star bent around the white dwarf, distorted by its gravitational field.

Like the deflection of a scale's needle, the deflection of the background star's light let astronomers calculate the white dwarf's mass (roughly 67.5 percent the mass of our sun).

Later she learned that although Galileo noticed the moons on the 7th, he mistook them for background stars, not questioning their true identity until the following night, when he returned to find two had moved from one side of Jupiter to the other.

These images of the background star may be distorted, brightened and multiplied depending on the alignment between the foreground lens and the background source.

This means that in 2014 and 2016 Proxima Centauri will pass in front of two background stars that are along its path.

Astronomers will measure the mass by examining images of each of the background stars to see how far the stars are offset from their real positions in the sky.

With such a small host star, the team employed a technique that eliminated the possibility that either a background star or a stellar companion could be mimicking what Kepler detected.