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EntityQ1150541· pop 29· linked from 407 articles

galactic disc

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Also known as disc

component a of disc galaxy

In the Vinony graph

Within Vinony's link graph, galactic disc is referenced by 407 other articles, and connects out to luminous infrared galaxy, starburst galaxy and interacting galaxy.

It is catalogued under the topic Galaxies.

Its subject is documented across 29 Wikipedia language editions.

Wikidata facts

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via Wikidata · CC0

~5 min read

Encyclopedic overview

The Sculptor Galaxy (NGC 253) is an example of a disc galaxy A galactic disc (or galactic disk) is a component of disc galaxies, such as spiral galaxies like the Milky Way and lenticular galaxies. Galactic discs consist of a stellar component (composed of most of the galaxy's stars) and a gaseous component (mostly composed of cool gas and dust). The stellar population of galactic discs tend to exhibit very little random motion with most of its stars undergoing nearly circular orbits about the galactic center. Discs can be fairly thin because the disc material's motion lies predominantly on the plane of the disc (very little vertical motion). The Milky Way's disc, for example, is approximately 1 kilolight-year thick, but thickness can vary for discs in other galaxies.

Stellar component

Excerpted from Wikipedia’s “galactic disc” article, available under the CC BY-SA 4.0 licence.

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