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Arp 271 (Interacting Galaxy)


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Arp 271 (NGC 5426 and NGC 5427)
Interacting Galaxy (相互作用銀河)

名前
(Name)
分類 明るさ
(Brightness)
別名
(Other names)
NGC 5426 Gx Sc 12.1 PGC 50083, UGCA 380, MCG -1-36-4
NGC 5427 Gx SBc 11.4 PGC 50084, UGCA 381, MCG -1-36-3

星座 (Constellation)
おとめ座 (Vir) (Virgo)

距離 (Distance)
9,000万光年 (90 million light-years)

Arp 271 (NGC 5426 and NGC 5427) is an interacting galaxy located 90 million light years from the Earth in the constellation Virgo.

Arp 271 (Interacting Galaxy) : Picture

The Colliding Spiral Galaxies of Arp 271
The Colliding Spiral Galaxies of Arp 271
(C) Gemini Observatory, GMOS-South, NSF, NASA
NGC 5427 (Left), NGC 5426 (Right)
What will become of these galaxies? Spiral galaxies NGC 5426 and NGC 5427 are passing dangerously close to each other, but each is likely to survive this collision. Most frequently when galaxies collide, a large galaxy eats a much smaller galaxy. In this case, however, the two galaxies are quite similar, each being a sprawling spiral with expansive arms and a compact core. As the galaxies advance over the next tens of millions of years, their component stars are unlikely to collide, although new stars will form in the bunching of gas caused by gravitational tides. Close inspection of the above image taken by the 8-meter Gemini-South Telescope in Chile shows a bridge of material momentarily connecting the two giants. Known collectively as Arp 271, the interacting pair spans about 130,000 light years and lies about 90 million light-years away toward the constellation of Virgo. Quite possibly, our Milky Way Galaxy will undergo a similar collision with the neighboring Andromeda Galaxy in about five billion years.

The Colliding Spiral Galaxies of Arp 271
The Colliding Spiral Galaxies of Arp 271
(C) NASA
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Arp 271 (Interacting Galaxy) : Movie

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