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List Of Galaxy Clusters
This article lists some galaxy groups and galaxy clusters. Defining the limits of galaxy clusters is imprecise as many clusters are still forming. In particular, clusters close to the Milky Way tend to be classified as galaxy clusters even when they are much smaller than more distant clusters. Clusters exhibiting strong evidence of dark matter Some clusters exhibiting strong evidence of dark matter. Named groups and clusters This is a list of galaxy groups and clusters that are well known by something other than an entry in a catalog or list, or a set of coordinates, or a systematic designation. Clusters Groups The major nearby groups and clusters are generally named after the constellation they lie in. Many groups are named after the leading galaxy in the group. This represents an ad hoc systematic naming system. Groups and clusters visible to the unaided eye The Local Group contains the largest number of visible galaxies with the naked eye. However, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Virgo Cluster
The Virgo Cluster is a large cluster of galaxies whose center is 53.8 ± 0.3 Mly (16.5 ± 0.1 Mpc) away in the constellation Virgo. Comprising approximately 1,300 (and possibly up to 2,000) member galaxies, the cluster forms the heart of the larger Virgo Supercluster, of which the Local Group (containing our Milky Way galaxy) is a member. The Local Group actually experiences the mass of the Virgo Supercluster as the Virgocentric flow. It is estimated that the Virgo Cluster's mass is 1.2 out to 8 degrees of the cluster's center or a radius of about 2.2 Mpc. Many of the brighter galaxies in this cluster, including the giant elliptical galaxy Messier 87, were discovered in the late 1770s and early 1780s and subsequently included in Charles Messier's catalogue of non-cometary fuzzy objects. Described by Messier as nebulae without stars, their true nature was not recognized until the 1920s. The cluster subtends a maximum arc of approximately 8 degrees centered in the constellation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Markarian's Chain
Markarian's Chain is a stretch of galaxies that forms part of the Virgo Cluster. When viewed from Earth, the galaxies lie along a smoothly curved line. Charles Messier first discovered two of the galaxies, M84 and M86, in 1781. The other galaxies seen in the chain were discovered by William Herschel and are now known primarily by their catalog numbers in John Louis Emil Dreyer's New General Catalogue, published in 1888. It was ultimately named after the Soviet astrophysicist, Benjamin Markarian Benjamin "Benik" Egishevitch Markarian ( hy, Բենիամին Եղիշեի Մարգարյան) was an Armenian astrophysicist. Markarian's Chain is a group of galaxies which was named after him when he discovered that its members move with a com ..., who discovered their common motion in the early 1960s. Member galaxies include M84 ( NGC 4374), M86 ( NGC 4406), NGC 4477, NGC 4473, NGC 4461, NGC 4458, NGC 4438 and NGC 4435. It is located at RA 12h 27m and Dec +13° 10′. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leo Triplet
The Leo Triplet (also known as the M66 Group) is a small group of galaxies about 35 million light-years away in the constellation Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628. Members The table below lists galaxies that have been consistently identified as group members in the Nearby Galaxies Catalog, the Lyons Groups of Galaxies (LGG) Catalog, and the group lists created from the Nearby Optical Galaxy sample of Giuricin et al. Member list Additionally, some of the references cited above indicate that one or two other nearby galaxies may be group members. NGC 3593 is frequently but not consistently identified as a member of this group. Nearby groups The M96 Group is located physically near the Leo Triplet. These two groups may actually be separate parts of a much larger group, and some group identification algorithms actually identify the Leo Triplet as part of the M96 Group. See also * NGC 5866 Group The NGC 5866 Group is a small ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tom Lorenzin
Tom or TOM may refer to: * Tom (given name), a diminutive of Thomas or Tomás or an independent Aramaic given name (and a list of people with the name) Characters * Tom Anderson, a character in ''Beavis and Butt-Head'' * Tom Beck, a character in the 1998 American science-fiction disaster movie '' Deep Impact'' * Tom Buchanan, the main antagonist from the 1925 novel ''The Great Gatsby'' * Tom Cat, a character from the ''Tom and Jerry'' cartoons * Tom Lucitor, a character from the American animated series ''Star vs. the Forces of Evil'' * Tom Natsworthy, from the science fantasy novel ''Mortal Engines'' * Tom Nook, a character in ''Animal Crossing'' video game series * Tom Servo, a robot character from the ''Mystery Science Theater 3000'' television series * Tom Sloane, a non-adult character from the animated sitcom ''Daria'' * Talking Tom, the protagonist from the ''Talking Tom & Friends'' franchise * Tom, a character from the '' Deltora Quest'' books by Emily Rodda * Tom, a cha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NGC 7331 Group
NGC 7331 Group is a visual grouping of galaxies in the constellation Pegasus. Spiral galaxy NGC 7331 is a foreground galaxy in the same field as the collection, which is also called the ''Deer Lick Group''. It contains four other members, affectionately referred to as the "fleas": the lenticular or unbarred spirals NGC 7335 and NGC 7336, the barred spiral galaxy NGC 7337 and the elliptical galaxy NGC 7340. These galaxies lie at distances of approximately 332, 365, 348 and 294 million light years, respectively. Although adjacent on the sky, this collection is not a galaxy group, as NGC 7331 itself is not gravitationally associated with the far more distant "fleas"; indeed, even they are separated by far more than the normal distances (~2 Mly) of a galaxy group. See also * Stephan's Quintet, another visual grouping that is not (purely) a galaxy group. Ironically, its non-group member, NGC 7320, might be a member of a true NGC 7331 group, having a similar redshift to that ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ralph Copeland
Ralph Copeland FRSE FRAS (3 September 1837 – 27 October 1905) was an English astronomer and the third Astronomer Royal for Scotland. Life Copeland was born at Moorside Farm, near Woodplumpton in Lancashire, England the son of Robert Copeland, yeoman, and his wife, Elizabeth Milner, and attended Kirkham Grammar School. He spent five years in Australia where he discovered his interest in astronomy. He returned in 1858 to pursue a career in engineering. Eager to pursue his astronomical interests, Copeland built a small observatory, gave up engineering, and then travelled to Germany to study astronomy at the University of Göttingen. When he returned to England, as a patron of Lord Rosse, Copeland brought back German methods of astronomy. Later he appointed many German astronomers as assistants, such as Oswald Lohse. Copeland then worked at the Dun Echt Observatory owned by the 26th Earl of Crawford. Copeland was a frequent traveler on worldwide expeditions and observed the 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copeland Septet
The Copeland Septet (also Copeland's Septet, Hickson Compact Group 57) is a group of galaxies in the constellation Leo that includes NGC 3748, NGC 3754, NGC 3750, NGC 3751, NGC 3745, NGC 3753 and NGC 3746. The group was discovered by British astronomer Ralph Copeland in 1874. The location of Copeland's Septet is right ascension / declination (2000.0), about three degrees northwest of third magnitude star 93 Leonis. See also * Wild's Triplet * Zwicky's Triplet * Robert's Quartet Robert's Quartet is a compact galaxy group approximately 160 million light-years away in the constellation Phoenix. It is a family of four very different galaxies whose proximity to each other has caused the creation of about 200 star-forming ... * Stephan's Quintet and NGC 7331 Group (also known as the ''Deer Lick Group'' located about half a degree northeast of Stephan's Quintet) * Seyfert's Sextet References Leo (constellation) 57 {{galaxy-cluster-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burbidge Chain
Burbidge is a surname. Notable people with the surname include: * Frederick William Thomas Burbidge (1847–1905), English explorer and botanist * Geoffrey Burbidge (1925–2010), English astronomy professor * George Burbidge (1847–1908), Canadian lawyer, judge and author * John Burbidge (1718–1812), English soldier, land owner, judge and political figure in Nova Scotia * Leslie William Burbidge (1891–??), English World War I flying ace * Margaret Burbidge (1919–2020), British-born American astrophysicist * Maurice "Moss" Burbidge (1896–1977), pioneering Canadian aviator * Michael Francis Burbidge (born 1957), American Roman Catholic Bishop * Nancy Tyson Burbidge (1912–1977), Australian systemic botanist * Richard Burbidge Sir Richard Burbidge, 1st Baronet (2 March 1847 – 31 May 1917) was an England, English merchant. Biography He was born in Wiltshire, educated at Devizes and Melksham, and at the age of 13 was apprenticed to a provision merchant in Oxford Street ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SL2S J08544-0121
The Bullet Group (SL2S J08544-0121) is a newly merging group of galaxies, a merger between two galaxy groups to form a new larger one, that recently had a high speed collision between the two component groups. The group exhibits separation between its dark matter and baryonic matter components. The galaxies occur in two clumps, while the gas has expanded into a billowing cloud encompassing all three clumps. As of 2014, it is one of the few galaxy clusters known to show separation between the dark matter and baryonic matter components. The group is named after the Bullet Cluster, a similar merging galaxy cluster, except on a smaller scale, being of groups instead of clusters. The bimodal distribution of galaxies was found at discovery in 2008. The galaxy group is a gravitational lens and strongly lenses a more distant galaxy behind it, at z=~1.2 Characteristics As of 2014, the group is the smallest mass object to exhibit separation between its dark matter and baryonic matter comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bullet Group
The Bullet Group (SL2S J08544-0121) is a newly merging group of galaxies, a merger between two galaxy groups to form a new larger one, that recently had a high speed collision between the two component groups. The group exhibits separation between its dark matter and baryonic matter components. The galaxies occur in two clumps, while the gas has expanded into a billowing cloud encompassing all three clumps. As of 2014, it is one of the few galaxy clusters known to show separation between the dark matter and baryonic matter components. The group is named after the Bullet Cluster, a similar merging galaxy cluster, except on a smaller scale, being of groups instead of clusters. The bimodal distribution of galaxies was found at discovery in 2008. The galaxy group is a gravitational lens and strongly lenses a more distant galaxy behind it, at z=~1.2 Characteristics As of 2014, the group is the smallest mass object to exhibit separation between its dark matter and baryonic matter comp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
