Sentences with phrase «large galaxies contain»

Large galaxies contain a trillion or more stars.

Astronomers have known for some 10 years that nearly every large galaxy contains at its core an immense black hole — an object having such intense gravity that even light can not escape.

Not exact matches

Using the Very Large Array of the National Radio Astronomy Observatory in the US, the team observed radio emission from hydrogen in a distant galaxy and found that it would have contained billions of young, massive stars surrounded by clouds of hydrogen gas.

Because dwarf galaxies contain so few stars, this suggests that whatever is responsible for FRB 121102 has a better chance of forming in tiny galaxies than large, spiral ones.

Many distant quasars — luminous galaxies, thought to be powered by large central black holes — are known to contain warm dust, which glows at infrared wavelengths.

Whereas the «loudness» of each chirp has clearly conveyed each event's distance from us, LIGO's twin stations can at present only vaguely constrain their celestial sources, which may lie anywhere within huge swaths of the heavens containing thousands upon thousands of large galaxies.

Before LIGO's detections, astronomers only had definitive observations of two varieties of black holes: ones that form from stars that were thought to top out around 20 solar masses; and, at the cores of large galaxies, supermassive black holes of still - uncertain provenance containing millions or billions of times the mass of the sun.

The combined amount of light detected by Hubble and Spitzer reveals that the galaxy contains less than 500 million times the mass of our sun, making it at most 1 / 200th as large as the Milky Way.

In a 2013 observational study, University of Wisconsin - Madison astronomer Amy Barger and her then - student Ryan Keenan showed that our galaxy, in the context of the large - scale structure of the universe, resides in an enormous void — a region of space containing far fewer galaxies, stars and planets than expected.

They found 47 faint smudges: galaxies that could be at least as large as the Milky Way, but which contain so few stars that they glow as dimly as dwarf galaxies.

Large galaxies like the Milky Way can contain several hundred billion stars, but Sculptor is home to just a few million.

The MASSIVE Survey was funded in 2014 by the National Science Foundation to weigh the stars, dark matter and central black holes of the 100 most massive, nearby galaxies: those larger than 300 billion solar masses and within 350 million light - years of Earth, a region that contains millions of galaxies.

Dwarf galaxies orbiting the Milky Way lack other types of gamma - ray emitters and contain large amounts of dark matter for their size — in fact, they're the most dark - matter - dominated sources known.

This cluster has a diameter of approximately 15 million light years which is not much larger than our Local Group but it contains fifty times the number of galaxies.

All of these groups are ones containing at least 3 galaxies with an angular diameter larger than 100 arcseconds - a measure which is obviously biased towards closer groups.

The Milky Way (like other spiral galaxies) is surrounded by a large halo region which contains globular clusters, large clouds of hydrogen gas, and a huge mass of the mysterious dark matter.

NGC 3359 appears to be devouring a much smaller gas rich dwarf galaxy, nicknamed the Little Cub, which contains 10,000 times fewer stars than its larger companion.

On the largest scales, galaxies and everything they contain are concentrated into filaments that stretch around the edge of enormous voids.

Galaxies are large systems of stars and interstellar matter, typically containing several million to some trillion stars, of masses between several million and several trillion times that of our Sun, of an extension of a few thousands to several 100,000 s light years, typically separated by millions of light years distance.

Astronomers have combined data from NASA's Chandra X-ray Observatory, the Hubble Space Telescope and the National Science Foundation's Karl G. Jansky Very Large Array (VLA) to conclude that a peculiar source of radio waves thought to be a distant galaxy is actually a nearby binary star system containing a low - mass star and a black hole.

Three of these faintly - lit bodies, located in the southern hemisphere near the Large and Small Magellanic Clouds, were confirmed as dwarf galaxies, which contain stars numbering in the thousands in contrast to our galaxy, which is believed to contain over 300 billion stars.

These high resolution images also showed that the lensing galaxy is an edge - on disc galaxy — similar to our galaxy, the Milky Way — which obscures parts of the background light due to the large dust clouds it contains.

The team combined high - resolution and large - radius spectroscopic maps taken from the Keck Observatory and Gemini Observatory in Hawai`i to measure the spin of the galaxies and millimeter and radio telescopes to measure the amount of gas they contained.

The amount of oxygen in a galaxy is determined primarily by three factors: how much oxygen comes from large stars that end their lives violently in supernova explosions — a ubiquitous phenomenon in the early Universe, when the rate of stellar births was dramatically higher than the rate in the Universe today; how much of that oxygen gets ejected from the galaxy by so - called «super winds,» which propel oxygen and other interstellar gases out of galaxies at hundreds of thousands of miles per hour; and how much pristine gas enters the galaxy from the intergalactic medium, which doesn't contain much oxygen.

Some astronomers believe brown dwarfs may exist in large numbers, helping account for the so - called missing mass» of galaxiesmatter galaxies seem to contain that can not be accounted for by observed celestial objects.

This group is notable for containing a large number of medium - sized dwarf galaxies.

These two clusters contain about 50 large galaxies each.

The Andromeda Galaxy is the largest galaxy of the Local Group, which, in addition to the Milky Way, also contains the Triangulum Galaxy, and about 30 other smaller galaxies.