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Arp 148 (Interacting Galaxy)


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Arp 148
Interacting Galaxy (相互作用銀河)


別名 (Other names)
VV 032, MCG +07-23-019, Mayall's Object

距離 (Distance)
5億光年 (500 million light-years)

星座 (Constellation)
おおぐま座 (UMa) (Ursa Major)

Arp 148 is an interacting galaxy located 500 million light years from the Earth in the constellation Ursa Major.

Arp 148 (Interacting Galaxy) : Picture

Arp 148
Arp 148
(C) NASA
This interacting pair of galaxies is included in Arp's catalog of peculiar galaxies as number 148. Arp 148 is the staggering aftermath of an encounter between two galaxies, resulting in a ring-shaped galaxy and a long-tailed companion. The collision between the two parent galaxies produced a shockwave effect that first drew matter into the center and then caused it to propagate outwards in a ring. The elongated companion perpendicular to the ring suggests that Arp 148 is a unique snapshot of an ongoing collision. Infrared observations reveal a strong obscuration region that appears as a dark dust lane across the nucleus in optical light. Arp 148 is nicknamed Mayall's object and is located in the constellation of Ursa Major, the Great Bear, approximately 500 million light-years away.

Arp 148
Arp 148
(C) NASA
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