
	Where results make sense

Topic: Galaxy cluster cloud

Related Topics

Amazonas Department

Grand Unification Energy

Hawick

Abiotic stress

Leavitt Township, Michigan

Regular issue coinage

Andrei Nikolayevich Tupolev

Jim Moir

Marcel Gotlib

1816 in science

Twofish

George Foster (baseball player)

Bobby Locke

Kingdom of Benin

	Astronomy Answers: Universe Family Tree: Galaxy Cluster
		A galaxy cluster is a set of galaxies that appear to be associated with each other.
		Figuring out which galaxies belong to which galaxy cluster usually suffers from the same problems as figuring out which galaxy clusters belong to which supercluster.
		Rich clusters have many member galaxies and the galaxies are usually concentrated toward the middle of the cluster, with one or more very bright and large galaxies in the very center.
	www.astro.uu.nl /~strous/AA/en/boom/melkwegcluster.html (692 words)

	Sloan Digital Sky Survey
		This galaxy is unusual in that the gas in the galaxy rotates counter to the rotation of the stars.
		The colors of the different parts of the galaxy show differences in star formation history: the reddish color of the central bulge indicates that it is older than the disk, while the blue spots in the disk, particularly in the arms, show where new star formation is taking place.
		Because the stars in a globular cluster are formed at the same time, from the same cloud of gas, and are at the same distance, these differences are not due to age, initial composition, or distance, but mass.
	www.sdss.org /iotw/archive.html (2313 words)

	Colour-Magnitude Relation for Elliptical Galaxies
		Cluster of galaxies are the most massive collapsed structures in the Universe, the largest ones have central masses in excess of 10,000 × the mass of our galaxy.
		The galaxy colours are measured from the apparent magnitudes of the galaxies in two different regions of their spectra: through a filter in the blue (B) around 4500Å and one in the infrared centred close to 8100Å, called the I band.
		The linear relation for the brighter galaxies indicates that most of the E and S0 galaxies within the cluster were formed via the same mechanism and that this mechanism couples the colour of the stars formed within the galaxy to the final mass of the galaxy.
	www.astro.su.se /~ostlin/ColMag/Source/colMag_intro.html (1365 words)

	Chandra :: Resources :: Animations & Video :: X-ray Sources: Groups & Clusters of Galaxies
		During the collision the hot gas in each cluster is slowed and distorted by a drag force, similar to air resistance.
		This is a sequence of images of the galaxy cluster 1E 0657-56, also known as the bullet cluster.
		The animation then zooms out to show the full view of the galaxy, which is surrounded by hot gas (red) that pervades the galaxy cluster.
	chandra.harvard.edu /resources/animations/galaxy_clusters.html (929 words)

	Sacramento Peak: Galaxy Cluster (Site not responding. Last check: 2007-10-17)
		A galaxy cluster is a set of galaxies that appear to be associated with each other.
		Figuring out which galaxies belong to which galaxy cluster usually suffers from the same problems as figuring out which galaxy clusters belong to which supercluster.
		Rich clusters have many member galaxies and the galaxies are usually concentrated toward the middle of the cluster, with one or more very bright and large galaxies in the very center.
	www.sunspot.noao.edu /sunspot/pr/tree/galaxy-cluster.html (618 words)

	Chandra observation of Abell cluster 2142 (Site not responding. Last check: 2007-10-17)
		Galaxy clusters grow to vast sizes as smaller clusters are pulled inward under the influence of gravity.
		The gas clouds are in the core of a galaxy cluster known as Abell 2142.
		The elongated shape of the bright cloud suggested that two clouds were in the process of coalescing into one, but the details remained unclear.
	www.physics.unc.edu /~cecil/a245/clustersinxray.html (628 words)

	Observing Galaxy Clusters (Site not responding. Last check: 2007-10-17)
		At a distance of roughly 40 million light years, the Virgo Cluster is the nearest rich aggregation of galaxies in the sky, and a target that will repay many evenings of careful study at the eyepiece.
		Among the brighter galaxy clusters here are the Hydra I Cluster (Abell 1060) around NGC 3309 and 3311, the Centaurus Cluster (RCG 3526) dominated by NGC 4696 and 4709, and the cluster around IC 4329.
		This huge filament of galaxy clusters extends from the Perseus Cluster (Abell 426) through Abell 347 and Abell 262 in Andromeda into the NGC 507 and NGC 383 galaxy groups in northern Pisces.
	www.angelfire.com /id/jsredshift/agcintro.htm (913 words)

	Universe Today - Galaxy Stripped Clear of Star Forming Material
		A new three-color composite image of spiral galaxy NGC 4402, taken as the galaxy falls into the Virgo galaxy cluster, shows several key lines of evidence of an ongoing interaction, according to a presentation today in Denver at the 204th meeting of the American Astronomical Society.
		The hot galaxy cluster wind strips away the outer layers of the cloud, and the dust from these layers is then pushed away.
		The bright blue clusters of young stars in the bottom left region of the galaxy’s disk is further evidence of recently triggered star formation.
	www.universetoday.com /am/publish/printer_galaxy_stripped_star_forming_material.html (763 words)

	Cosmic Wonders: Star Clusters
		Open clusters are formed when several stars are formed at the same time from the same cloud of dust and gas.
		Unlike open clusters, globular clusters are much older and usually contain between ten thousand to a million stars which are gravitationally bound in a tight concentration.
		Star cluster are among the easiest objects to observe in the night sky.
	www.seasky.org /cosmic/sky7a06.html (775 words)

	Motions In Nearby Galaxy Cluster Reveal Presence Of Hidden Superstructure
		A nearby galaxy cluster is facing an intergalactic headwind as it is pulled by an underlying superstructure of dark matter, according to new evidence from NASA's Chandra X-ray Observatory.
		Galaxy Cluster Surveys May Help Explain "Dark Energy" In The Universe (April 24, 2002) -- The universe appears to be permeated with an invisible force -- dark energy -- that is pushing it apart faster and faster.
		The motion of the core gas cloud, together with optical observations of a group of galaxies racing inward on a collision course with it, suggests that an unseen, large structure is collapsing and drawing everything toward a common center of gravity.
	www.sciencedaily.com /releases/2004/09/040914093037.htm (771 words)

	Beyond Our Galaxy
		Because of their need to observe this galaxy with great frequency to record the variation of the Cepheids, the total exposure time for this galaxy is extremely long (about one full day), and the combined image provides one of the deepest views taken by Hubble.
		The galaxy's nucleus is the bright object in the center of the image; the spoke-like structures are wisps of material connecting the nucleus to the outer ring of young stars.
		The galaxy's image is brightened, magnified, and smeared into an arc-shape by the gravitational influence of the intervening galaxy cluster, which acts like a gigantic lens.
	www.cosmiclight.com /imagegalleries/beyond.htm (4347 words)

	ESA Portal - Record-breaking ancient galaxy clusters (Site not responding. Last check: 2007-10-17)
		Studies of two distant galaxy clusters using a combination of the largest radio, optical and x-ray telescopes on the ground and in space have independently found that galaxies formed relatively early in the history of the Universe.
		The two galaxy clusters studied are respectively the most distant proto-cluster ever found and the most massive known galaxy cluster for its epoch.
		The galaxies are members of a cluster of galaxies that existed when the Universe was only 5000 million years old, or about 35 percent of its present age.
	www.esa.int /export/esaCP/SEM68D374OD_index_0.html (1337 words)

	NASA - Chandra catches early phase of cosmic assembly - Marshall Space Flight Center Photo Release 04-213 (08-13-04)
		Chandra's image of the galaxy cluster Abell 2125 reveals a complex of several massive multimillion degree Celsius gas clouds appear to be in the process of merging.
		Ten of the point-like sources are associated with galaxies in the cluster and the rest are probably distant background galaxies.
		Building a massive galaxy cluster is a step-by-step enterprise that takes billions of years and affects the growth and evolution of the member galaxies.
	www.nasa.gov /centers/marshall/multimedia/photos/2004/photos04-213.html (312 words)

	Coma Cluster / Supercluster
		Now sometimes called the Coma Cluster of galaxies (Abell/ACO/A 1656) or Supercluster with the addition of Leo Cluster or A 1367, this large-scaled structure of the local universe is located around 370 million light-years (ly) away from Sol.
		Frequently found with multiple nuclei, the diameter of cD galaxies typically ranges around 20 times larger than those of spirals or giant ellipticals (up to 65 million ly or 2 million parsecs across), and their envelopes may be formed from the accumulated debris of tidal interactions with neighboring galaxies.
		The relatively cool gas clouds may in a delicate balance whereby the energy lost by X-ray radiation ("radiative cooling") is closely balanced by energy gained by heat conduction from the hot gas of the cluster.
	www.solstation.com /x-objects/coma-sc.htm (1176 words)

	Tutorials - The Constellations (Site not responding. Last check: 2007-10-17)
		It is part of a massive "cloud" of gas and dust which is a virtual "star factory" in constant recycling turmoil.
		Near the center of the turmoil lies the source of energy that is mostly responsible for illuminating the nebula.
		Globular clusters will appear as "brighter gray", with rare displays of individual "tinting" - pale subtleties of color in their cores (usually pinkish or straw-colored) with possibly a hint of blue at the edges.
	www.belmontnc.4dw.net /constellations.htm (987 words)

	SPACE.com -- Galaxies Orbiting Galaxies Create Wakes and Tails
		This cloud of gas is associated with a galaxy which is moving to the left of the image.
		The galaxy cluster Abell 160 was imaged by NASA's Chandra X-ray Observatory, marking the first time the wakes of several galaxies in one cluster have been observed.
		Clusters are pervaded by a large cloud of hot gas, which is held in place by the gravitational attraction of the cluster as a whole.
	www.space.com /scienceastronomy/xray_wakes_030408.html (599 words)

	Sacramento Peak: Galaxy Cloud (Site not responding. Last check: 2007-10-17)
		Sometimes it is convenient to divide a supercluster into several groups of galaxy clusters -- especially if the supercluster is a poor (irregular) one.
		They can be called "clouds" of galaxy clusters, though this usage may not be accepted by all astronomers.
		For example, the Local Supercluster has been divided into several clouds of galaxies (see the table discussed under superclusters) [1], of which the Canes Venatici cloud harbors our own galaxy.
	www.sunspot.noao.edu /sunspot/pr/tree/galaxy-cloud.html (266 words)

	SPACE.com -- Ghost-Busting, Astronomy Style: Chandra Finds Ancient Celestial Eruption
		The find, announced today by scientists, suggests that galaxy clusters are the locales of powerful and recurring explosions, and may help explain why galaxy clusters act as giant cosmic magnets.
		As the matter swirled around the fl hole, located in a galaxy near the center of the cluster, it generated enormous electromagnetic fields that expelled material from the vicinity of the fl hole at high speeds.
		Galaxy clusters are the largest known gravitationally bound structures in the universe.
	www.space.com /scienceastronomy/astronomy/chandra_abell_020108.html (759 words)

	JPL.NASA.GOV: News Releases
		The red streak behind the core of the cluster is a dust cloud, which may indicate the cluster's interaction with the Milky Way.
		The newfound cluster is one of about 150 known to orbit the center of the Milky Way.
		The cluster's apparent size, as viewed from Earth, is comparable to a grain of rice held at arm's length.
	www.jpl.nasa.gov /news/news.cfm?release=2004-254 (643 words)

	galaxy (Site not responding. Last check: 2007-10-17)
		Milky Way Galaxy: In Astronomy is: a luminous band encircling the heavens, composed of distant stars and nebulae invisible separately to the naked eye.
		Condensing gas forming a galaxy in which stars are being born.
		Andromeda Galaxy: Definition 2 in Astronomy is: A northern spiral galaxy 2.2 million light-years away from Earth; the most distant object visible with the unaided eye.
	ourworld.compuserve.com /homepages/Art_Lewis/galaxy.htm (291 words)

	How do we know dark matter exists?
		The cluster is composed of thousands of galaxies enveloped in a gigantic cloud of hot gas, and an amount of dark matter equivalent to more than a hundred trillion Suns!
		The hot gas in the cluster is held in the cluster primarily by the gravity of the dark matter, so the distribution of the hot gas is determined by that of the dark matter.
		The cluster does not behave as scientists would expect it to if only the visible matter is generating the gravity present in the cluster.
	starchild.gsfc.nasa.gov /docs/StarChild/shadow/questions/question59.html (723 words)

	Astronomy Answers: Universe Family Tree: Galaxy Cluster Cloud
		Sometimes it is convenient to divide a supercluster into several groups of galaxy clusters, especially if the supercluster is a poor (irregular) one.
		Such groups are bigger than a galaxy cluster but smaller than a supercluster.
		This cloud has the shape of a flat disk, 0.3 Mpc thick and with a radius of about 19 Mpc.
	www.astro.uu.nl /~strous/AA/en/boom/melkwegclusterwolk.html (257 words)

	HubbleSite - NewsCenter - Galaxy > Cluster
		Hubble Illuminates Cluster of Diverse Galaxies This NASA Hubble Space Telescope image shows the diverse collection of galaxies in a galaxy cluster called Abell S0740, located more than 450 million light-years away in the constellation...
		Host Galaxy Cluster to Largest Known Radio Eruption This is a new composite image of galaxy cluster MS0735.6+7421, located about 2.6 billion light-years away in the constellation Camelopardalis.
		Hubble and Keck Team Up to Find Farthest Known Galaxy in Universe An international team of astronomers may have set a new record in discovering what is the most distant known galaxy in the universe.
	hubblesite.org /newscenter/archive/releases/galaxy/cluster (315 words)

	New Scientist Breaking News - Astronomers find first 'dark galaxy'
		Joshua Simon, Timothy Robishaw and Leo Blitz of the University of California, Berkeley, observed a cloud of hydrogen gas called HVC 127-41-330 using the Arecibo radio telescope in Puerto Rico.
		The researchers therefore argue that the cloud must be at least 80 per cent dark matter, the hypothetical invisible substance whose gravity is supposed to explain why many objects in the cosmos move as fast as they do.
		In our local group of galaxies, we know of only about 35 dwarf galaxies, but simulations of galaxy formation using dark matter suggest there should be about 500.
	www.newscientist.com /article.ns?id=dn4272 (267 words)

	Spaceflight Now \| Breaking News \| Too fast, too furious: A galaxy's fatal plunge
		Keel and colleagues are laying out the "forensic evidence" of the galaxy's late life, in a series of presentations in Atlanta, Ga., at the 203rd meeting of the American Astronomical Society.
		This artist's conception of the spiral galaxy C153 shows the galaxy looking peculiar because it is plowing through the heart of a distant galaxy cluster at 4.5 million miles per hour.
		The ram pressure of external hot gas trapped in the cluster is stripping away the galaxy's own cooler gas, leaving behind its skeletal spiral arms of dust and stars.
	spaceflightnow.com /news/n0401/07plunge (1769 words)

	Local - Wikipedia, the free encyclopedia
		Local Subgroup, the subgroup of galaxies belonging to the Milky Way system.
		Local Group, the galaxy cluster/group where our galaxy subcluster/subgroup resides
		Local Supercluster, where the our galaxy cluster cloud resides
	en.wikipedia.org /wiki/Local (169 words)

	NOAO Press Release 04-06: Galaxy Cleaned Out by Encounter with Hot Cluster Gas
		This three-color composite image of spiral galaxy NGC 4402 shows several key lines of evidence for the galaxy being stripped bare of its star-forming material by its violent ongoing encounter with the hot gas in the center of the Virgo galaxy cluster, as NGC 4402 falls into it.
		New observations from the WIYN 3.5-meter telescope on Kitt Peak show striking visual evidence for a galaxy being stripped bare of its star-forming material by its violent ongoing encounter with the hot gas in the center of a galaxy cluster.
		Second, the dusty disk appears to be “bowed” upward; that is, it has been bent by the wind blowing from the southeast (from the lower left of the image).
	www.noao.edu /outreach/press/pr04/pr0406.html (845 words)

	Star Cluster with Surprising Similarities to Sun's Composition Offers Clues on Milky Way Evolution
		New observations of the richly populated star cluster NGC 2420 taken by the refurbished WIYN 0.9-meter telescope at Kitt Peak National Observatory suggest that the cluster contains a multitude of clues about the history and evolution of the Milky Way.
		The Open Cluster Study team determined the cluster to be roughly 1.7 billion years old, or about one-third of the age of the Sun.
		Because all of the stars in a star cluster have similar ages and initial compositions, star clusters can be used as a laboratory to study many different areas of astronomy.
	www.noao.edu /outreach/press/pr02/pr0204.html (922 words)

Try your search on: Qwika (all wikis)