Sentences with phrase «globular star»
A "globular star" refers to a type of star cluster that appears spherical or ball-shaped. These star clusters contain a large number of stars that are densely packed together. Full definition
(The left hand of the two dark objects is a much nearer globular star cluster.)
sciencedaily.com
Gas that has been discovered streaming at high speed from an old star in our region of the Galaxy could solve the mystery of why no interstellar matter has been found within the tightly packed groups of stars, known as globular star clusters, which lie much further away.
The motion of the stars may also offer a glimpse into how the star cluster was formed — whether it was built up over time by globular star clusters that happen to fall into the galaxy's center, or from gas spiraling in from the Milky Way's disk to form stars at the core.
A dense globular star cluster near the center of our Milky Way Galaxy holds a buzzing beehive of rapidly - spinning millisecond pulsars, according to astronomers who discovered 21 new pulsars in the cluster using the National Science Foundation's 100 - meter Green Bank Telescope in West Virginia.
Even more odd, these new black holes were found in the cores of glittering, «beehive» swarms of stars - called globular star clusters - that orbit our Milky Way and other galaxies.
An example of the new type of star cluster discovered (left), and an example of a previously known globular star cluster (right).
«The Milky Way's ancient heart: VISTA finds remains of archaic globular star cluster.»
That limit makes the famous globular star cluster in Hercules, which is overhead these nights, a fine eye chart: it beams in at magnitude 5.8.
As Kalirai reports online today in Nature, the four white dwarfs imply that the inner halo's age is around 11.4 billion years, younger than the oldest globular star - clusters, which are 13.5 billion years old.
But Arnold and Gilmore suggest the stars were once members of the same globular star cluster that was torn apart, perhaps by passing through the disc of our Galaxy.
The Andromeda galaxy contains ten times as many globular star clusters as the Milky Way, according to an international team of astronomers.
«Although globular star clusters were first discovered in 1665, it has taken more than 340 years to fully appreciate all the different types of star clusters that are made in the Universe.»
This month, we're taking a sabbatical from northern skies and heading to the deep south, where we will visit the finest globular star cluster in the entire sky.
Omega Centauri is one of the largest globular star clusters residing in the outskirts of our galaxy.
These bright tracers include globular star clusters, planetary nebulae (dying stars that glow like neon lights), and patches of glowing hydrogen gas.
Messier 28 was the first globular star cluster in which a milisecond pulsar (a pulsar with a rotational period between 1 and 10 miliseconds) was discovered in 1986.
Explanation: A deep optical image (left) of 47 Tucanae shows an ancient globular star cluster so dense and crowded that individual stars can not be distinguished in its closely packed core.
The sharp «eye» of the Wide Field Camera 3 (WFC3) has captured hundreds of young star clusters, ancient swarms of globular star clusters, and hundreds of thousands of individual stars, mostly blue supergiants and red supergiants.
Some are found in globular clusters, but most move in a huge cloud around the disk called the galactic halo, which has a luminous inner component defined by globular star clusters and other easily observable stars (with coronae of hot gas possibly expelled by supernovae and of high - velocity neutron stars) and an outer dark - matter component inferred from its gravitational impact on the Milky Way's spiral disk.
At least 18 black widow and nine redback binary systems have been found within the Milky Way so far, and additional members of each class have been discovered within the dense globular star clusters that orbit our galaxy.
Dr. Jean Brodie, from the University of California at Santa Cruz, will trace the formation and evolution of galaxies over cosmic time, making use of some «astronomical fossils» called globular star clusters, that are bright beacons tracing all the mergers and acquisitions that have assembled into present day galaxies.
Kalirai first analyzed hot white dwarfs in the nearest globular star cluster, M4, which lies in the constellation Scorpius and is 12.5 billion years old.
The M15 globular star cluster is close enough that individual star speeds can be measured.
«Hubble makes the first precise distance measurement to an ancient globular star cluster.»
Astronomers using NASA's Hubble Space Telescope have determined the orbital motion of two distinct populations of stars in an ancient globular star cluster, offering proof they formed at different times and providing a rare look back into the Milky Way galaxy's early days.
Population II stars are older, with a low heavy - element content, and are found in the Milky Way Bulge and Halo, and globular star clusters.
Conventional wisdom says that globular star clusters are the stodgy old codgers of the universe, but it turns out that many of these clusters are young
Globular star clusters — vast collections that hold anywhere from tens of thousands to a few million suns — roam the periphery of our galaxy's central bulge.
The new instrument — the largest single optical telescope in the Southern Hemisphere — has thus far produced stunning views of the Lagoon Nebula, a barred spiral galaxy, and a globular star cluster.
However, for every star in a globular star - cluster, there exist roughly 100 halo stars on their own; dating them has been an enormous challenge.
Globular star clusters are huge balls of thousands of stars that orbit most galaxies.
Observations with ESO's Very Large Telescope in Chile have discovered a new class of «dark» globular star clusters around the giant galaxy Centaurus A.
Matt Taylor and his team have now made the most detailed studies so far of a sample of 125 globular star clusters around Centaurus A using the FLAMES instrument on ESO's Very Large Telescope at the Paranal Observatory in northern Chile [1].
«New class of «dark» globular star clusters discovered around giant galaxy Centaurus A.» ScienceDaily.
Observations with ESO's Very Large Telescope in Chile have discovered a new class of «dark» globular star clusters around this galaxy.
Four distant stars may be the remains of a globular star cluster that was torn apart when it passed through the disc of the Milky Way.
Globular star clusters are spherical associations of up to hundreds of thousands of stars.
Drake, a key player in Breakthrough Listen, famously used the telescope in 1974 to transmit his «Arecibo message» toward the globular star cluster M13.
Globular star clusters like this one, 47 Tucanae, might be excellent places to search for interstellar civilizations.
Globular star clusters are extraordinary in almost every way.
In this artist's illustration, an intermediate - mass black hole in the foreground distorts light from the globular star cluster in the background.
Today, astronomers are announcing new evidence that an intermediate - mass black hole (IMBH) weighing 2,200 Suns is hiding at the center of the globular star cluster 47 Tucanae.
However, globular star clusters contain anywhere from 10,000 to 1 million stars, densely packed into a region only a few tens to a few hundred light - years wide.
The points of light which can be seen in this image are a few of the fifteen thousand globular star clusters which belong to the galaxy.