Hamburger Galaxy (NGC 3628) in Leo (Steve Milne)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: IC 2745 · NGC 3628

Hamburger Galaxy (NGC 3628) in Leo, Steve Milne

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Hamburger Galaxy (NGC 3628) in Leo

Link: https://stevemilne.smugmug.com/Photos/Sky/Galaxies/i-bv46dr7

Powered byPixInsight

Hamburger Galaxy (NGC 3628) in Leo

Link: https://stevemilne.smugmug.com/Photos/Sky/Galaxies/i-bv46dr7

NGC 3628 is an unbarred spiral galaxy 35 million light years away in the constellation of Leo. NGC 3628 is one of the members (the only non-Messier member) of the 'Leo Triplet' of galaxies.

Stretching out from NGC 3628 for around 300,000 light years is a ‘tidal tail’ – an elongated region of stars that arises as a result of gravitational interaction between galaxies. Within this tidal tail is an Ultra Compact Dwarf (UCD) - very compact galaxies with high stellar populations that display 'masses, colors, and metallicities between those of globular clusters and early-type dwarf galaxies' [Faifer et al. First confirmed ultra-compact dwarf galaxy in the NGC5044 group; Astronomy & Astrophysics: 9 July 2018]. NGC 3628-UCD1 may be one such object [Jennings et al. The Astrophysical Journal Letters, 812: 10 October 2015]. (I am grateful to Ken Wood for alerting me to the existence of NGC 3628-UCD1 in the description accompanying his recent image of the galaxy.)

NGC 3628 was photographed between 23 Februaryand 25 March 2020 from a rig in Spain that is privately owned and operated by Barry Wilson and me.

Capture details are as follows:

Telescope: TEC 140

Camera: QSI 690

Filters: Astrodon

Mount: 10 Micron GM2000HPS

Lum: 43 x 600s

Red: 39 x 300s

Green 41 x 300s

Blue: 37 x 300s

A total of 16 hours and 55 minutes exposure.

Data: Steve Milne & Barry Wilson

Processing: Steve Milne

The image has been rotated somewhat to stop the galaxy and tail looking like a skillet. This necessitated a little cropping.

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Hamburger Galaxy (NGC 3628) in Leo

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