Galaxies & Star Clusters - Barry Wilson
The Leo Triplet and tidal tail

The Leo Triplet and tidal tail

The Leo Triplet (also known as the M66 Group) is a small group of galaxies about 35 million light-years away in the constellation Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628. NGC 3628, also known as the Hamburger Galaxy (left-most with tidal tail) or Sarah's Galaxy is an unbarred spiral galaxy about 35 million light-years away in the constellation Leo. It was discovered by William Herschel in 1784. It has an approximately 300,000 light-years long tidal tail. Along with M65 and M66, NGC 3628 forms the Leo Triplet, a small group of galaxies. Its most conspicuous feature is the broad and obscuring band of dust located along the outer edge of its spiral arms, effectively transecting the galaxy to the view from Earth. Due to the presence of an x-shaped bulge, visible in multiple wavelengths, it has been argued that NGC 3628 is instead a barred spiral galaxy with the bar seen end-on. Simulations have shown that bars often form in disk galaxies during interactions and mergers, and NGC 3628 is known to be interacting with its two large neighbours producing the elongated stream of stars and dust in its faint tail. Wikipedia.

Takahashi FSQ106; 10 Micron GM1000HPS; QSI683wsg-8 with Astrodon filters; 24 x 600s each for RG&B; 27 x 1200s and 30x600s Luminance; 26 hrs total integration. e-Eye Extremadura, Spain. February 2018.

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