Sentences with phrase «satellite galaxies»

One scenario involves the gradual disturbance of a well - ordered disk of stars as a result of mergers with small satellite galaxies.

Two of those have been confirmed as dwarf satellite galaxies so far.

It doesn't have gigantic regions of star formation in its arms, it doesn't have a rectangular bar in its center, it doesn't appear to have large satellite galaxies.

To complicate matters, the biggest dark matter clumps are the best candidates to contain satellite galaxies.

Usually, a minor merger event simply breaks up a low - mass satellite galaxy.

Signs indicate that they, like the objects found by the same team earlier this year, are likely dwarf satellite galaxies, the smallest and closest known form of galaxies.

Returning to the faintest protogalaxy, it is described as being comparable in size to the Large Magellanic Cloud (LMC), a very small satellite galaxy of our Milky Way seen in the southern hemisphere.

An international team of astronomers has determined that Centaurus A, a massive elliptical galaxy 13 million light - years from Earth, is accompanied by a number of dwarf satellite galaxies orbiting the main body in a narrow disk.

Because this scenario depends on the presence of nearby stars, we expect DCBHs to typically form in satellite galaxies that orbit around larger parent galaxies where Population III stars have already formed.

A whirling plane of satellite galaxies around Centaurus A challenges cold dark matter cosmology.

«Stream of stars in Andromeda satellite galaxy shows cosmic collision.»

«The large dark matter content of Milky Way satellite galaxies makes this a significant result for both astronomy and physics,» Alex Drlica - Wagner of Fermilab said, in a statement.

Now, a team of astronomers has used position and velocity data from the Sloan Digital Sky Survey as well as computer simulations of stellar evolution in the Large Magellanic Cloud (LMC, pictured above), a small satellite galaxy near the Milky Way, to show that these speeding stars may come from there.

I had come to Bonn to give a 45 - minute talk on my investigations of the small satellite galaxies surrounding the Milky Way.

Messier 110 (M110, NGC 205) is the second brighter satellite galaxy of the Andromeda galaxy M31, together with M32, and thus a member of the Local Group.

Recent advances in observational technique allow the detection of the extremely faint structure around galaxies, such as loops or debris that are likely made by dynamical interactions with satellite galaxies..

«Record - breaking faint satellite galaxy of the Milky Way discovered.»

A narrow band of neutral hydrogen from other satellite galaxies, the Magellanic Clouds, appears to be trailing behind those galaxies as they orbit the Milky Way.

«We showed that it may be fairly common for groups of stars in the disk to be relocated to more distant realms within the Milky Way — having been «kicked out» by an invading satellite galaxy.

Last spring, Geha and Josh Simon, a colleague at Caltech, used the 10 - meter Keck II telescope on Hawaii's Mauna Kea to study the mass of eight newly discovered satellite galaxies, detected over the last two years by the Sloan Digital Sky Survey, an ongoing effort to make a detailed map of a million galaxies and quasars.

Müller's team next plans to measure speeds for another 15 or so satellite galaxies.

The Coalsack later garnered the nickname of the Black Magellanic Cloud, a play on its dark appearance compared to the bright glow of the two Magellanic Clouds, which are in fact satellite galaxies of the Milky Way.

Centaurus A, an elliptical galaxy 13 million light - years from Earth, hosts a group of dwarf satellite galaxies co-rotating in a narrow disk, a distribution not predicted by dark - matter - influenced cosmological models.

Astronomers had speculated that the existence of small, dark matter — dominated satellite galaxies might solve the problem, but there was no evidence that any such galaxies existed.

Researchers from the Niels Bohr Institute, among others, have detected a stream of stars in one of the Andromeda Galaxy's outer satellite galaxies, a dwarf galaxy called Andromeda II.

These are the two largest satellite galaxies associated with the Milky Way, about 158,000 light - years and 208,000 light - years away, respectively.

In another surprise, Harvard University astrophysicist Nitya Kallivayalil recently announced that two of our largest satellite galaxies probably aren't satellites at all.

We thought satellite galaxies were usually in random orbits around larger ones, but a handful in coordinated orbits may force us to rethink galaxy formation

The vast polar structure — a plane of satellite galaxies at the poles of the Milky Way — is at the center of a tug - of - war between scientists who disagree about the existence of mysterious dark matter, the invisible substance that, according to some scientists, comprises 85 percent of the mass of the universe.

He emphasized: «The inevitable conclusion from this was that the majority of satellite galaxies stop forming stars relatively fast during the last 5 billion years as they fall to dense environments of clusters by way of the filaments, while this process is much slower for central galaxies.»

«However, the surprising finding was that the decline was especially steep for satellite galaxies.»

The new object is comparable in size to the Large Magellanic Cloud (LMC), a diminutive satellite galaxy of our Milky Way.

«The weird thing that we're finding is if we actually go out and measure the masses of the satellites that we can see, little satellite galaxies, dwarf galaxies that we can see, if we measure those masses, those masses are actually smaller than a good number of the dark matter clumps that we predict should be there.»

At the absolute magnitude of -0.8 in the optical waveband, it may well be the faintest satellite galaxy yet found.

Most other giant spirals lack large, close - in, gas - rich satellite galaxies like the Magellanic Clouds.

Astronomers aren't sure, however, whether the crumbs came from devoured satellite galaxies or surviving companions.

They form when a large galaxy's gravity pulls one edge of a nearby satellite galaxy more strongly than the other edge, unraveling the galaxy and leaving stars behind.

Its putative existence is primarily inferred from the anomalous rotations of satellite galaxies such as the Magellanic Clouds, which orbit the Milky Way too quickly to be explained by ordinary gravity alone.

David Merritt, professor of astrophysics at Rochester Institute of Technology, co-authored «Co-orbiting satellite galaxy structures are still in conflict with the distribution of primordial dwarf galaxies,» to be published in an upcoming issue of Monthly Notices of the Royal Astronomical Society.

Over the last decade, astronomers doing large photometric surveys (that is, measuring the light intensities of celestial objects) have found a number of new satellite galaxies, stellar streams, and over-densities around the Milky Way and the Andromeda galaxies.

The bright spiral disk may also be surrounded by a much fainter, outer ring of stars, possibly stripped from at least one, former satellite galaxy.

New observations with National Science Foundation's Green Bank Telescope suggest that what was once believed to be an intergalactic cloud of unknown distance and significance, is actually a previously unrecognized satellite galaxy of the Milky Way orbiting backward around the Galactic center.

The recent discoveries bring the number of Milky Way satellite galaxies identified to about a dozen.

Along with the Andromeda Galaxy, the Milky Way is one of the Group's most massive members, around which many smaller satellite galaxies orbit.

An illustration showing the distribution of the two dozen known dwarf satellite galaxies around the Milky Way.