M58 and Siemen Twins (Benjamin Law)

Celestial hemisphere: Northern · Constellation: Virgo (Vir) · Contains: IC 3578 · M 58 · NGC 4564 · NGC 4567 · NGC 4568 · NGC 4579

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M58 and Siemen Twins

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M58 and Siemen Twins

I was just talking about intergalactic collisions in one of my classes last week and here we are!!!

On the right side of my picture here, the Siamese Twins, also known as the Butterfly Galaxies, are a pair of colliding unbarred spiral galaxies located in Virgo constellation. The galaxies lie at a distance of 59.4 million light years and are members of the Virgo Cluster. They have an apparent magnitude of 10.9 and an absolute magnitude of -13.3.

They are called the Siamese Twins because they appear to be the same shape and size. Recent studies suggest they were indeed in the process of colliding, with the highest rate of star formation occurring in their overlap region.

Bortle 7, Southern Ontario

Camera and Exposures: ASI294MC-P; 107x300s; -15C; 40 Flats 20 Darks

Scope: ES208CF (8” F/4 Carbon Fiber Newtonian)

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M58 and Siemen Twins

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