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Arp 226 (Interacting Galaxy)


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Arp 226 (NGC 7252)
Interacting Galaxy (相互作用銀河)
Gx SB0

別名 (Other names)
Atoms-for-Peace Galaxy, PGC 68612, MCG -4-52-36

明るさ (Brightness)

11.1等級


星座 (Constellation)
みずがめ座 (Aqr) (Aquarius)

距離 (Distance)
2億2,000万光年 (220 million light-years)

Arp 226 (NGC 7252) is an interacting galaxy located 220 million light years from the Earth in the constellation Aquarius.

Arp 226 (Interacting Galaxy) : Picture

Arp 226 (Atoms-for-Peace Galaxy)
Arp 226 (Atoms-for-Peace Galaxy)
(C) ESO
Is this what will become of our Milky Way Galaxy? Perhaps if we collide with the Andromeda Galaxy in a few billion years, it might. Pictured above is NGC 7252, a jumble of stars created by a huge collision between two large galaxies. The collision will take hundreds of millions of years and so is effectively caught frozen in time in the above image. The resulting pandemonium has been dubbed the Atoms-for-Peace galaxy because of its similarity to a cartoon of a large atom. The above image was taken recently by the MPG/ESO 2.2 meter telescope in Chile. NGC 7252 spans about 600,000 light years and lies about 220 million light years away toward the constellation of Aquarius. Since the sideways velocity of the Andromeda Galaxy (M31) is presently unknown, no one really knows for sure if the Milky Way will ever collide with M31.

NGC 7252
Wide-field view of the field around NGC 7252: the Atoms-for-Peace galaxy
(C) ESO and Digitized Sky Survey 2. Acknowledgment: Davide De Martin
This visible light wide-field image of the region around NGC 7252 was created from photographs taken through red and blue filters and forming part of the Digitized Sky Survey 2. The galaxy appears close to the centre. The field of view is approximately three degrees across.

Aquarius
A galactic collision in the constellation of Aquarius
(C) ESO, IAU and Sky & Telescope
This chart shows the location of the galactic merger NGC 7252, known as Atoms-for-Peace, within the constellation of Aquarius. This map shows most of the stars visible to the unaided eye under good conditions and NGC 7252 itself is marked as a red oval in a circle near the bottom. This curious object is faintly visible in moderate-sized amateur telescopes.

Arp 226
Arp 226 (Atoms-for-Peace Galaxy)
(C) ESO
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