The slow mating dance of IC2163 and NGC2207 (Geoff Healey)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: IC 2163 · NGC 2207

The slow mating dance of IC2163 and NGC2207, Geoff Healey

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The slow mating dance of IC2163 and NGC2207

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The slow mating dance of IC2163 and NGC2207

IC 2163 and NGC 2207 are a pair of colliding spiral galaxies about 80 million light-years away in the constellation Canis Major. Both galaxies were discovered by John Herschel in 1835.The larger spiral, NGC 2207, is classified as an intermediate spiral galaxy exhibiting a weak inner ring structure around the central bar. The smaller companion spiral, IC 2163, is classified as a barred spiral galaxy that also exhibits a weak inner ring and an elongated spiral arm that is likely being stretched by tidal forces with the larger companion. Both galaxies contain a vast amount of dust and gas, and are beginning to exhibit enhanced rates of star formation.NGC 2207 is in the process of colliding and merging with IC 2163. They are only in the first step of colliding and merging, with NGC 2207 being in the process of tidally stripping IC 2163. The process is estimated to take around a billion years.Courtesy WIKI.Between these two and the upper left bright variable star HD 44081 is another pair of very small faint galaxies, PGC833351 and PGC18731. Unfortunately I cant find any information on these.

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The slow mating dance of IC2163 and NGC2207

The slow mating dance of IC2163 and NGC2207

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The slow mating dance of IC2163 and NGC2207

The slow mating dance of IC2163 and NGC2207

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