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NGC 247
Galaxy in the constellation Cetus From Wikipedia, the free encyclopedia
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NGC 247 (also known as Caldwell 62 and commonly known as the Claw Galaxy[2]) is an intermediate spiral galaxy about 11.1 Mly away in the constellation Cetus. This distance was confirmed in late February 2011. Previous measurements showed that the galaxy was about 12.2 Mly away, but this was proved to be wrong.[3] NGC 247 is a member of the Sculptor Group, and is 70 000 light years in diameter. [4]
NGC 247 has an unusually large void on one side of its spiral disk. This void contains some older, redder stars but no younger, bluer stars.[5]
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Nearby galaxies and galaxy group information
NGC 247 is one of several galaxies that is gravitationally bound to the Sculptor Galaxy (NGC 253). These galaxies form a small core in the center of the Sculptor Group, which is one of the nearest groups of galaxies to the Milky Way.[6] Most other galaxies associated with the Sculptor Group are only weakly gravitationally bound to this core.[6][7]
Burbidge's Chain
In 1963, Geoffrey Burbidge and Margaret Burbidge identified a group of five background galaxies located northeast of NGC 247.[8] This grouping came to be known as Burbidge's Chain, and in 1977 it was listed in the VV catalog as VV 518.[9] Individually, the 5 galaxies are also identified as NGC 247A, NGC 247B, NGC 247C, NGC 247D, and ESO 540-025.
Image Gallery
Center of NGC 247 imaged by the Hubble Space Telescope.[10]
Burbidge's Chain imaged by the Legacy Surveys DR10
See also
References
External links
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