Leo Triplet with Tidal Tail and Tidal Dwarf Galaxy

The Leo triplet or M66 group is located in the constellation Leo at approximately 35 million light years and contains M66, M65 and NGC 3628. NGC 3628 (Hamburger galaxy) has a 300000 light year long tidal tail that is visible in this image taken mostly at SQM 21.7. The vertically-oriented feature visible at the very end of the tidal tail is a tidal dwarf galaxy (TDG) that was discovered by Nikiel-Wrocynski et al. only last year (2014). The idea of dwarf objects forming from the tidal debris left by galaxy mergers was first proposed by Zwicky in 1956, with many such ‘recycled’ galaxy candidates now known in various merging galaxy systems, with this one the closest to the Milky Way.

Compare an inverted crop of this image with TDG discovery paper at:
www.flickr.com/photos/9906726@N08/22099420160/in/album-72...

Scope used and reducer: APM 130/780 f/6 LW CNC II, W.O. 110/132 FF
Mount Used: Takahashi EM-200 Temma2
Camera Used: FLI Microline ML-8300
Astrodon Series E Gen2 LRGB
ISO/Exposure: L:19x16m (5.1hr),RGB: 54x4m(3.6hr), 8.7 hr total

D.A.R.C. Observatory, Mercey Hot Springs, CA 4/12/15, 4/18/15

LeoTripletDecLRGB_CT_WTps3
LeoTripletDecLRGB_CT_WTps3-2021
LeoTripletDecLRGB_CT_WTps3-2021-2022a

Taken on: April 22, 2015

Tags:

Astrometrydotnet:id=nova1091913

Astrometrydotnet:status=solved

Sets appears in: • Astrophotography

Groups appears in: • Astrophotography - Astronomy - Astrophysics • Deep Space Astrophotography more » • astrometry • Astrophotography (Pixinsight Processing) • Deep Sky « less

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