Sentences with phrase «hydrogen clouds»

By 2005, however, optical telescope follow - ups on these sources suggested they were almost all just hydrogen clouds in normal galaxies.

In the spectrum, the team found evidence of a large concentration of neutral hydrogen clouds close to the galaxy, indicating the presence of a giant cluster of embryonic galaxies.

To gauge 3C 58's distance, astronomers exploit the Milky Way's rotation, measuring velocities of hydrogen clouds in front of the nebula to deduce how fast it revolves around the galaxy's center.

The results presented by Lockman suggest that, as some astronomers have predicted, the hot gas in the halo slowly cools and condenses into hydrogen clouds along with wispy filaments that connect them.

He rescanned a sample of 19 hydrogen clouds from the 4,000 candidates in the Parkes survey.

Based on the extreme, deduced photometric redshift of GRB 000131 indicating that the gamma rays had travelled an extreme long cosmological distance, astronomers predicted a «break» in the red region of the spectrum around 670 to 700 nm from the strong absorption of light from intervening intergalactic hydrogen clouds along the line of sight between GRB 000131 and the Solar System.

«The surprising aspect about the present discovery is that we have detected this Lyman - alpha line in an apparently faint galaxy at a redshift of 8.68, corresponding to a time when the universe should be full of absorbing hydrogen clouds,» Richard Ellis, a former faculty member of the California Institute of Technology, and co-author of a paper detailing the findings, published in the Astrophysical Journal Letters, said in a statement.

This image confirms the presence of discrete hydrogen clouds in the halo, and could help astronomers understand the origin and evolution of the rarefied atmosphere that surrounds our Galaxy.

Signal, too, remains a cold case file, though Antonio Paris of St. Petersburg College in Florida now theorizes that it might have come from a pair of passing comets and their attendant hydrogen clouds.

Far beyond the pair, immense dusty hydrogen clouds form an obscuring backdrop, while Scorpius's leftmost edge marks the direction to the turbulent center of our galaxy.

But it was believed that the denser molecular hydrogen clouds where stars form would be more resistant to the wind.

The objects that make up the filament are less massive and more representative of the primordial matter in the universe than the larger hydrogen clouds that have been observed previously, says Simon White of the Max Planck Institute for Astrophysics in Garching, a theorist who studies structure formation in the early universe.

Hawaii's Gemini Observatory caught this remarkable detail of supersonic «bullets» piercing through hydrogen clouds in the Orion Nebula.

Although the motions of other hydrogen clouds near our galaxy have not been measured as well, some are probably heading towards the Milky Way as well.

Astronomers also saw the star eclipsed by «The Behemoth» hydrogen cloud around the planet.

But Kothes says the nebula inhabits the Milky Way's Perseus arm, the next spiral arm out from ours, which pushes hydrogen clouds toward the galactic center and thereby alters their velocities.

In optical light the gas cloud is too transparent to be seen, but the hydrogen atoms absorb the UV photons, making the extended hydrogen cloud trailing GJ 436b «visible» in transits observed at those wavelengths.

Plots of speed - grouped hydrogen clouds in our Galaxy traced the arms of the Milky Way and discovered that its outer spiral disk is warped.

Photo Source: S. Brunier; Design & Illustration: P. Vosteen (CC BY - ND) A team of astronomers has discovered what appears to be a grand exodus of more than 100 hydrogen clouds streaming away from the center of the Milky Way and heading into intergalactic space.

The gigantic hydrogen cloud (or space blob) engulfs the three clumps.

What the GBT was able to pin down was a population of 20 discrete neutral hydrogen clouds, together with an extended filamentary component, which, the astronomers believe, are both associated with Andromeda.

«The surprising aspect about the present discovery is that we have detected this Lyman - alpha line in an apparently faint galaxy at a redshift of 8.68, corresponding to a time when the Universe should be full of absorbing hydrogen clouds,» said co-author and Caltech astronomer Richard Ellis.

This break was indeed found at a wavelength of 670.1 nm, as was the finding that virtually all light at shorter wavelengths from the optical counterpart of GRB 000131 was absorbed by intervening hydrogen clouds.

At a 2009 conference in the Caucasus region, Disney met Ukrainian astronomer Valentina Karachentseva, who suggested some of those thousands of hydrogen clouds in the Parkes survey were indeed galaxies.

Now suppose that the 21 - centimeter radio waves from a hydrogen cloud were emitted when our universe was just 500 million years old.

Astrophysicists simulated the fate of a hydrogen cloud as massive as 10,000 suns that suddenly wafted near a black hole.

Being able to examine extremely distant quasars, still surrounded by long - vanished neutral hydrogen clouds, «means we're finally probing into the Dark Ages,» Schneider says.

The hydrogen clouds, Lyman - a Emitting Galaxy - Building Objects, or LEGOs, are named not only for the children's building blocks but also for the radiation they emit.

Using spectroscopy, the researchers were able to detect the presence of the hydrogen cloud and measure the speed it is flowing.

Green Bank, WV — A team of astronomers using the National Science Foundation's Green Bank Telescope has made the first conclusive detection of what appear to be the leftover building blocks of galaxy formation — neutral hydrogen clouds — swarming around the Andromeda Galaxy, the nearest large spiral galaxy to the Milky Way.

Green Bank, WV — A team of astronomers using the National Science Foundation's Robert C. Byrd Green Bank Telescope (GBT) has made the first conclusive detection of what appear to be the leftover building blocks of galaxy formation — neutral hydrogen clouds — swarming around the Andromeda Galaxy, the nearest large spiral galaxy to the Milky Way.

But a new study suggests it wasn't aliens at all — but rather a hydrogen cloud caused by comets.