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Is a section on Formation and evolution required? See the equivalent entry under Galaxy. This could be included within the Structure section. Presumably the process of development of the disc structure corresponds to the formation of structures at other orders of magnitude - such as disc galaxies and protoplanetary discs -- Tediouspedant ( talk) 19:44, 6 February 2010 (UTC)
It would be useful to mention what's known about whether the Virgo supercluster is gravitationally bound. According to the article on the encompassing Laniakea supercluster, Laniakea is not: "Follow-up studies suggest that Laniakea is not gravitationally bound; it will disperse rather than continue to maintain itself as an overdensity relative to surrounding areas." Jess_Riedel ( talk) 19:48, 8 November 2018 (UTC)
What is considered "large" apparent size? Ardric47 02:17, 20 March 2006 (UTC)
"The local (Coma-Virgo), Perseus-Piscus, Hydra-Centaurus, Orphiuchus, Vela, and a number of other superclusters are observed to move towards the Great Attractor as speeds of greater than 600,000 km per second," Isn't this about 3 times the speed of light?
The group/cluster member list is a mess. Moreover, this list gets really messy when considering the difficulty in identifying whether galaxies are parts of groups (see the Sombrero Galaxy under "Environment") and the difficulty in distinguishing whether galaxies are subdivided into small groups or combined together into large groups (see my revisions to the M101 Group article and the section labelled "Nearby groups"). This section could be misleading or confusing, and its accuracy will always be questionable, so I am removing the section. GeorgeJBendo 21:21, 28 October 2006 (UTC)
=== Galaxy clouds of the Virgo Supercluster ===
=== Groups and Clusters of the Virgo Supercluster === Sorted by the number of galaxies they contain with large apparent size:
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There were complaints that Image:Local_supercluster.jpg (the image on the right) was unreadable because it used km, so I made one using light years instead: Image:Local_supercluster-ly.jpg. Hairy Dude 01:04, 7 July 2007 (UTC)
A list of (some) members should be included, and the major divisions of the LSC... (halo, disc, etc)... there's this Leo Spur and Local Sheet... and is the Local Void part of the LSC, or next to it? 70.55.203.50 ( talk) 09:33, 6 August 2008 (UTC)
I'd like to propose that we rename this page 'Local Supercluster' instead of 'Virgo Supercluster.' Most of the literature uses this name, I believe in part to distinguish this structure from the 'Virgo cluster,' it's main constituent. 'Local Supercluster' has the advantage of being completely unambiguous, standing by analogy with the 'Local Group.' Vegasbri ( talk) 18:32, 9 December 2008 (UTC)
[[Image:Local_supercluster-ly.jpg|right|299px|thumb|The Virgo Supercluster]]
The '''Virgo Supercluster''' or '''Local Supercluster''' is the [[galaxy|galactic]] [[supercluster]] that contains the [[Local Group]], the latter containing, in its turn, the [[Milky Way]] and [[Andromeda Galaxy|Andromeda]] galaxies.
===Disk and halo===
The Supercluster consists of two components: disk component and halo component. The flattened disk component has a pancake-like shape, and contains 60% of the Virgo Supercluster's luminous galaxies. The halo component consists of many elongated objects, and contains the remaining 40% of the Virgo Supercluster's luminous galaxies.
===Diameter===
The diameter of the Supercluster is about 200 million [[light year]]s; it contains about 100 [[groups and clusters of galaxies]] and is dominated by the [[Virgo cluster]] near its center. Our Local Group is located near the edge and is being drawn inward toward the Virgo cluster<ref>This is due to the so-called [[Virgo-centric flow]] towards the center of the supercluster. For details, see [http://www.seds.org/messier/more/virgo.html]</ref>. It is still unclear if at some time in the far future, the Local Group and other galactic clusters will be "eaten" by the very massive [[Messier_87|Virgo A Galaxy]]<ref>See ''The Virgo Cluster and the Local Group of Galaxies'' at [http://www.seds.org/messier/more/vir_loc.html]</ref>.
===Mass===
By tracking its gravitational effect on the movement of galaxies, one can estimate that the total mass of the Virgo Supercluster is about 10<sup>15</sup> [[solar mass]]es (2 × 10<sup>46</sup> [[kilogram|kg]]; see [[Orders of magnitude (mass)]]). As its luminosity is far too small for this number of stars, it is thought that a large part of its mass is [[dark matter]].
The entire Virgo Supercluster is being pulled toward a gravitational anomaly known as the [[Great Attractor]], which lies near the [[Norma cluster]].
===Divisions===
The Virgo Supercluster is subdivided into groups of clusters called [[galaxy cloud]]s. Three clouds are on the disk component: [[Virgo cluster]], [[M94 Group|Canes Venatici Cloud]] and [[Virgo II Cloud]]. The halo consists of many elongated clouds pointing toward the Virgo Cluster.
===References===
{{reflist}}
* Brent Tully: ''The Local Supercluster'', Astrophys. J., vol. 257, pp. 389-422 (1982)
* Oscar Monchito: ''Superclusters and Other Stuff'', Colton, vol. 12, pp. 124-118 (1992)
===Further reading===
* ASTRON. SOC. OF INDIA. BULLETIN V. 9, P. 1, 1981 ; [http://adsabs.harvard.edu/full/1981BASI....9....1D The Local Supercluster of Galaxies ; [[Gerard de Vaucouleurs|de Vaucouleurs, G.]] ; 1981BASI....9....1D
===External links===
* [http://www.atlasoftheuniverse.com/virgo.html The Virgo Supercluster from ''An Atlas of the Universe''
=== See also ===
*[[Large-scale structure of the cosmos]]
*[[Extragalactic astronomy]]
{{Milky Way}}
{{Earth's location}}
[[Category:Virgo Supercluster]]
[[Category:Galaxy superclusters]]
|
Here's the pre-rewrite version of the article (w/o the clickable maps) 76.66.195.159 ( talk) 02:35, 12 December 2008 (UTC)
There's an overabundance of computer-generated maps. Should there be a least one image that is taken by a telescope in this article?-- 128.119.51.64 ( talk) 01:48, 15 February 2011 (UTC)
I was curious to find what percentage of the mass of Virgo Supercluster is within the Virgo Cluster. It says that the Virgo Supercluster has mass of 10^15 solar masses, and on the article of Virgo Cluster, it says it has mass of 1.2 time 10^15 solar masses. This is absurd, the Virgo Cluster is a part of Virgo Supercluster, and yet Virgo Cluster is heavier. Can someone fix the article, and add information about mass distributions? Is the mass distribution predicted to be the same as luminousity distributions discussed in the article? — Preceding unsigned comment added by Nnnu ( talk • contribs) 11:53, 6 April 2011 (UTC)
There's an article from the Eurekalert site today that reports the designation of a new name for the local supercluster; "Laniakea". If true, then perhaps this article will have to be renamed again. Tmangray ( talk) 18:37, 3 September 2014 (UTC)
Isn't that the Virgo Supercluster? That's still a thing, right? Serendi pod ous 08:20, 30 March 2015 (UTC)
...could potentially make for a (somewhat) interesting list article. Or perhaps just a NavBox? Praemonitus ( talk) 17:29, 23 February 2016 (UTC)
This article, like Laniakea Supercluster, mixes up binding mass and total mass in the infobox. The binding mass given here, ~1.48 × 1015 solar masses, is the total mass of the cluster, but it is not its binding mass, which is of the order of 1029 solar masses. See Caelum Supercluster for an example of an article that gets it right. Renerpho ( talk) 15:27, 26 February 2019 (UTC)
This is the
talk page for discussing improvements to the
Virgo Supercluster article. This is not a forum for general discussion of the article's subject. |
Article policies
|
Find sources: Google ( books · news · scholar · free images · WP refs) · FENS · JSTOR · TWL |
This
level-4 vital article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||
|
Is a section on Formation and evolution required? See the equivalent entry under Galaxy. This could be included within the Structure section. Presumably the process of development of the disc structure corresponds to the formation of structures at other orders of magnitude - such as disc galaxies and protoplanetary discs -- Tediouspedant ( talk) 19:44, 6 February 2010 (UTC)
It would be useful to mention what's known about whether the Virgo supercluster is gravitationally bound. According to the article on the encompassing Laniakea supercluster, Laniakea is not: "Follow-up studies suggest that Laniakea is not gravitationally bound; it will disperse rather than continue to maintain itself as an overdensity relative to surrounding areas." Jess_Riedel ( talk) 19:48, 8 November 2018 (UTC)
What is considered "large" apparent size? Ardric47 02:17, 20 March 2006 (UTC)
"The local (Coma-Virgo), Perseus-Piscus, Hydra-Centaurus, Orphiuchus, Vela, and a number of other superclusters are observed to move towards the Great Attractor as speeds of greater than 600,000 km per second," Isn't this about 3 times the speed of light?
The group/cluster member list is a mess. Moreover, this list gets really messy when considering the difficulty in identifying whether galaxies are parts of groups (see the Sombrero Galaxy under "Environment") and the difficulty in distinguishing whether galaxies are subdivided into small groups or combined together into large groups (see my revisions to the M101 Group article and the section labelled "Nearby groups"). This section could be misleading or confusing, and its accuracy will always be questionable, so I am removing the section. GeorgeJBendo 21:21, 28 October 2006 (UTC)
=== Galaxy clouds of the Virgo Supercluster ===
=== Groups and Clusters of the Virgo Supercluster === Sorted by the number of galaxies they contain with large apparent size:
|
There were complaints that Image:Local_supercluster.jpg (the image on the right) was unreadable because it used km, so I made one using light years instead: Image:Local_supercluster-ly.jpg. Hairy Dude 01:04, 7 July 2007 (UTC)
A list of (some) members should be included, and the major divisions of the LSC... (halo, disc, etc)... there's this Leo Spur and Local Sheet... and is the Local Void part of the LSC, or next to it? 70.55.203.50 ( talk) 09:33, 6 August 2008 (UTC)
I'd like to propose that we rename this page 'Local Supercluster' instead of 'Virgo Supercluster.' Most of the literature uses this name, I believe in part to distinguish this structure from the 'Virgo cluster,' it's main constituent. 'Local Supercluster' has the advantage of being completely unambiguous, standing by analogy with the 'Local Group.' Vegasbri ( talk) 18:32, 9 December 2008 (UTC)
[[Image:Local_supercluster-ly.jpg|right|299px|thumb|The Virgo Supercluster]]
The '''Virgo Supercluster''' or '''Local Supercluster''' is the [[galaxy|galactic]] [[supercluster]] that contains the [[Local Group]], the latter containing, in its turn, the [[Milky Way]] and [[Andromeda Galaxy|Andromeda]] galaxies.
===Disk and halo===
The Supercluster consists of two components: disk component and halo component. The flattened disk component has a pancake-like shape, and contains 60% of the Virgo Supercluster's luminous galaxies. The halo component consists of many elongated objects, and contains the remaining 40% of the Virgo Supercluster's luminous galaxies.
===Diameter===
The diameter of the Supercluster is about 200 million [[light year]]s; it contains about 100 [[groups and clusters of galaxies]] and is dominated by the [[Virgo cluster]] near its center. Our Local Group is located near the edge and is being drawn inward toward the Virgo cluster<ref>This is due to the so-called [[Virgo-centric flow]] towards the center of the supercluster. For details, see [http://www.seds.org/messier/more/virgo.html]</ref>. It is still unclear if at some time in the far future, the Local Group and other galactic clusters will be "eaten" by the very massive [[Messier_87|Virgo A Galaxy]]<ref>See ''The Virgo Cluster and the Local Group of Galaxies'' at [http://www.seds.org/messier/more/vir_loc.html]</ref>.
===Mass===
By tracking its gravitational effect on the movement of galaxies, one can estimate that the total mass of the Virgo Supercluster is about 10<sup>15</sup> [[solar mass]]es (2 × 10<sup>46</sup> [[kilogram|kg]]; see [[Orders of magnitude (mass)]]). As its luminosity is far too small for this number of stars, it is thought that a large part of its mass is [[dark matter]].
The entire Virgo Supercluster is being pulled toward a gravitational anomaly known as the [[Great Attractor]], which lies near the [[Norma cluster]].
===Divisions===
The Virgo Supercluster is subdivided into groups of clusters called [[galaxy cloud]]s. Three clouds are on the disk component: [[Virgo cluster]], [[M94 Group|Canes Venatici Cloud]] and [[Virgo II Cloud]]. The halo consists of many elongated clouds pointing toward the Virgo Cluster.
===References===
{{reflist}}
* Brent Tully: ''The Local Supercluster'', Astrophys. J., vol. 257, pp. 389-422 (1982)
* Oscar Monchito: ''Superclusters and Other Stuff'', Colton, vol. 12, pp. 124-118 (1992)
===Further reading===
* ASTRON. SOC. OF INDIA. BULLETIN V. 9, P. 1, 1981 ; [http://adsabs.harvard.edu/full/1981BASI....9....1D The Local Supercluster of Galaxies ; [[Gerard de Vaucouleurs|de Vaucouleurs, G.]] ; 1981BASI....9....1D
===External links===
* [http://www.atlasoftheuniverse.com/virgo.html The Virgo Supercluster from ''An Atlas of the Universe''
=== See also ===
*[[Large-scale structure of the cosmos]]
*[[Extragalactic astronomy]]
{{Milky Way}}
{{Earth's location}}
[[Category:Virgo Supercluster]]
[[Category:Galaxy superclusters]]
|
Here's the pre-rewrite version of the article (w/o the clickable maps) 76.66.195.159 ( talk) 02:35, 12 December 2008 (UTC)
There's an overabundance of computer-generated maps. Should there be a least one image that is taken by a telescope in this article?-- 128.119.51.64 ( talk) 01:48, 15 February 2011 (UTC)
I was curious to find what percentage of the mass of Virgo Supercluster is within the Virgo Cluster. It says that the Virgo Supercluster has mass of 10^15 solar masses, and on the article of Virgo Cluster, it says it has mass of 1.2 time 10^15 solar masses. This is absurd, the Virgo Cluster is a part of Virgo Supercluster, and yet Virgo Cluster is heavier. Can someone fix the article, and add information about mass distributions? Is the mass distribution predicted to be the same as luminousity distributions discussed in the article? — Preceding unsigned comment added by Nnnu ( talk • contribs) 11:53, 6 April 2011 (UTC)
There's an article from the Eurekalert site today that reports the designation of a new name for the local supercluster; "Laniakea". If true, then perhaps this article will have to be renamed again. Tmangray ( talk) 18:37, 3 September 2014 (UTC)
Isn't that the Virgo Supercluster? That's still a thing, right? Serendi pod ous 08:20, 30 March 2015 (UTC)
...could potentially make for a (somewhat) interesting list article. Or perhaps just a NavBox? Praemonitus ( talk) 17:29, 23 February 2016 (UTC)
This article, like Laniakea Supercluster, mixes up binding mass and total mass in the infobox. The binding mass given here, ~1.48 × 1015 solar masses, is the total mass of the cluster, but it is not its binding mass, which is of the order of 1029 solar masses. See Caelum Supercluster for an example of an article that gets it right. Renerpho ( talk) 15:27, 26 February 2019 (UTC)