FACTOID # 3: South Carolina has the highest rate of violent crimes and aggravated assaults per capita among US states.
 
 Home   Encyclopedia   Statistics   States A-Z   Flags   Maps   FAQ   About 
   
 
WHAT'S NEW
 

SEARCH ALL

FACTS & STATISTICS    Advanced view

Search encyclopedia, statistics and forums:

 

 

(* = Graphable)

 

 


Encyclopedia > Coma Cluster
It has been suggested that this article be split into multiple articles accessible from a disambiguation page.   (Discuss)

Contents

Image File history File links Derived from public domain images featured at: http://commons. ...


Coma galaxy cluster

The Coma Cluster is an huge galaxy cluster and the prototypical rich cluster with over a thousand member galaxies known. Besides these, some thousands of smaller systems and a lot of dark matter is supposed. Image File history File links from German Wikipedia, inverted. ... Galaxy groups and clusters are super-structures in the spread of galaxies of the cosmos. ... This article is about a celestial body. ... In cosmology, dark matter consists of matter particles that cannot be detected by their emitted radiation but whose presence can be inferred from gravitational effects on visible matter such as stars and galaxies. ...


Structure of the galaxy cluster

The Cluster's mean distance from Earth is 140 Mpc (450 million lightyears). Its 10 brightest spiral nebulas have apparent magnitudes of 13-14 mag which already can be made out by amateur telescopes larger than 20 cm. MPC stands for: megaparsec Media Player Classic (Open Source Media Player) Minor Planet Center Model predictive control The Bank of Englands Monetary Policy Committee. ... Light year, a measure of distant Lightyear (band), a ska-punk band from the UK Buzz Lightyear, a character in the animated film Toy Story. ...


The image shows the central region, dominated by two giant Ellipticals and therefore is of type B (binary core): The two central cD galaxies dominate the gravity field of the whole system, and therefore the orbit velocity of its single members differ 'only' by about 150 km per second. The largest central Elliptical is (NGC 4884 = NGC 4889) with a diameter of 300 000 lightyears - three times that of our own galaxy. The gravity field is the field of force, caused by the gravitation of the Earth, and influenced by the Earth rotation, the atmosphere and by geological bodies. ...


Cluster members and foreground galaxies

As is usual for clusters of this richness, the galaxies are overwhelmingly elliptical and S0 galaxies, with only a few spirals of younger age, and many of them probably near the outskirts of the cluster. Most of the objects in the picture above are galaxies; only the very bright objects with diffraction spikes and the smallest circular dots are foreground stars of our own Galaxy. The Spindle Galaxy (NGC 5866), a lenticular galaxy in the Draco constellation. ... Diffraction is the apparent bending and spreading of waves when they meet an obstruction. ...


The large dimension of the Galaxy cluster was detected not till than in the 1950ies, mainly by astronomers of the Mount Palomar observatory. But in the cluster's foreground, some bright single galaxies are known for more than 200 years and about 10 times closer to our milky way. Most of them are Messier objects, e.g. M85, M88, M98, M99 and M100 with distances of approximarely 20 to 40 million lightyears. 1950 was a common year starting on Sunday (link will take you to calendar). ... Palomar Observatory is a privately-owned observatory located in San Diego County, California, 90 miles (145 km) southeast of Mount Wilson Observatory, on Palomar Mountain. ... The Milky Way (a translation of the Latin Via Lactea, in turn derived from the Greek Galaxia Kuklos) is the galaxy in which the Earth is found. ... Table of all 110 Messier objects. ... The Lenticular Galaxy M85 (also known as Messier Object 85, Messier 85, M85, or NGC 4382) is a lenticular galaxy in the Coma Berenices constellation. ... Spiral Galaxy M88. ... The Spiral Galaxy M98 (also known as Messier Object 98, Messier 98, M98, or NGC 4192) is a spiral galaxy in the Coma Berenices constellation. ... The Spiral Galaxy M99 (also known as Messier Object 99, Messier 99, M99, or NGC 4254) is a spiral galaxy in the Coma Berenices constellation. ... Spiral Galaxy M100 (also known as Messier Object 100, Messier 100, M100 or NGC 4321) is a spiral galaxy in the Coma Berenices constellation. ...


A similar but even greater galaxy cluster is the Virgo Cluster, located in the neighbouring constellation Virgo some degrees to the south. Is was also detected in the middle of the 20th century and contains 3000 - 4000 galaxies. A sky field near some of the brighter galaxies in the Virgo cluster. ... See VIRGO (physics) for a French-Italian project in physics. ... (19th century - 20th century - 21st century - more centuries) Decades: 1900s 1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s As a means of recording the passage of time, the 20th century was that century which lasted from 1901–2000 in the sense of the Gregorian calendar (1900–1999 in the...


See also:

Spiral nebula is an old term for a spiral galaxy. ... See: In astrophysics and astrometry: star cluster, galaxy cluster In molecular physics and solid state physics: A collaboration of (mostly equal) atoms, halfway between molecules and crystals; see cluster (physics) In music: tone cluster In statistics: cluster sampling or cluster analysis metall cluster In economics: Porters cluster Techno cluster... Superclusters are large groupings of smaller galaxy groups and clusters, and are among the largest structures of the cosmos. ... The National Geographic Society - Palomar Observatory Sky Survey (NGS-POSS) is a major photographic survey of the night sky completed at Palomar Observatory in 1958. ... Edwin Hubble Edwin Powell Hubble (November 20, 1889 – September 28, 1953) was a noted American astronomer, generally credited for discovering1the redshift of galaxies and the empirical Redshift Distance Law of galaxies, nowadays known as the Hubbles law, which , once the redshift is interpreted as a measure of recession speed... // Introduction Redshift describes a change in the wavelength of light, in which the wavelength is longer, or redder, than when it was emitted at the source. ... In ancient Greece and other early civilizations, astronomy consisted largely of astrometry, measuring positions of stars and planets in the sky. ... Look up Cosmology in Wiktionary, the free dictionary For the jazz band, see: Cosmology (band) Cosmology, from the Greek: κοσμολογία (cosmologia, κόσμος (cosmos) world + λογια (logia) discourse) is the study of the universe in its totality and by extension mans place in it. ... A spectrum analyzer is a device used to examine at the spectral composition of some electrical, acoustic or optical waveform. ... Observations for the Two Micron All-Sky Survey (2MASS) began in 1997 and were completed in 2001 at two telescopes located one each in the northern and southern hemispheres (Mt. ...

External Links

  • NASA: The Coma Cluster of Galaxies
  • Coma Cluster, Univ.of Alabama

Coma star cluster

The Coma Cluster is a small but near star cluster in our galaxy, containing about 40 stars (magnitude 5 to 10) with a common proper motion. The open cluster has a distance of 260 lightyears - almost as near as the Hyades - and covers an area of more than 5 degrees on the sky. In the FOV of a good field glass most of its stars can be seen simultaneously. The Pleiades is one of the most famous open clusters. ... The proper motion of a star is the motion of the position of the star in the sky (the change in direction in which we see it, as opposed to the radial velocity) after eliminating the improper motions of the stars, which affect their measured coordinates but are not real... Hyades can refer to the mythological Hyades the open star cluster Hyades This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... Your field of view is that part of the observable world that you are able to see at any given moment. ... Binoculars A set of binoculars (from Latin, bi-, two-, and oculus, eye) is a hand-held tool used to make distant objects appear closer by passing the image through two adjacent series of lenses, and erecting prisms. ...


See also:


In ancient Greece and other early civilizations, astronomy consisted largely of astrometry, measuring positions of stars and planets in the sky. ... A spectrum analyzer is a device used to examine at the spectral composition of some electrical, acoustic or optical waveform. ... Observations for the Two Micron All-Sky Survey (2MASS) began in 1997 and were completed in 2001 at two telescopes located one each in the northern and southern hemispheres (Mt. ...

There has been a request for this article, or a section of this article, to be expanded.
See the request on the listing or elsewhere on this talk page. Once the improvements have been completed, you may remove this notice and the page's listing.

 
 

COMMENTARY     


Share your thoughts, questions and commentary here
Your name
Your comments

Want to know more?
Search encyclopedia, statistics and forums:

 


Press Releases |  Feeds | Contact
The Wikipedia article included on this page is licensed under the GFDL.
Images may be subject to relevant owners' copyright.
All other elements are (c) copyright NationMaster.com 2003-5. All Rights Reserved.
Usage implies agreement with terms, 1022, m