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Arp 299 (Interacting Galaxy)


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Arp 299 (NGC 3690)
Interacting Galaxy (相互作用銀河)
Sb/P

別名 (Other names)
NGC 3690, IC 694, PGC 35326, UGC 6472, Mrk 171, VV 118, KPG 288

明るさ (Brightness)

11.2等級


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

距離 (Distance)
1億5,000万光年 (150 million light-years)

Arp 299 (NGC 3690) is an interacting galaxy located 150 million light years from the Earth in the constellation Ursa Major.

Arp 299 (NGC 3690) : Picture

Hubble Interacting Galaxy NGC 3690
Hubble Interacting Galaxy NGC 3690
(C) NASA
This system consists of a pair of galaxies, dubbed NGC 3690 (or Arp 299), which made a close pass some 700 million years ago. As a result of this interaction, the system underwent a fierce burst of star formation. In the last fifteen years or so six supernovae have popped off in the outer reaches of the galaxy, making this system a distinguished supernova factory. Arp 299 belongs to the family of ultra-luminous infrared galaxies and is located in the constellation of Ursa Major, approximately 150 million light-years away. It is the 299th galaxy in Arp's Atlas of Peculiar Galaxies. Despite its enormous amount of absorbing dust, enough violet and near-ultraviolet light leaks out for it to be number 171 in B.E. Markarian's catalog of galaxies with excess ultraviolet emission.

NGC 3690
NGC 3690
(C) NASA
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