M65 Group or Leo Triplet
Credit: Giuseppe Donatiello
M65 Group, otherwise called Leo Triplet, is with M51 among the best-known examples of galaxies interacting with tidal stellar streams.
The three galaxies are clearly interacting and, thanks to a specific image process, we are able to highlight the structures in the respective haloes. Although always with peculiar characteristics, structures produced by a first episode of fusion can be traced back to some recurring typologies.
We often find ring-shaped, hook-shaped, shell-like and thread-like structures. Much more complex are secondary mergers, i.e. those produced by the gravitational embrace between large galaxies in groups or clusters.
The latter are not the subject of our research, both because they are well reproduced by N-body hydrodynamic simulations, and because the capture and destruction of globular clusters and dwarf galaxies is of greater interest as a process of hierarchical formation in the context of the standard cosmological model called Lambda-CDM.
The census of such structures is far from complete and we have been able to demonstrate with some already published studies that the occurrence of "obvious" interaction structures is around 20%.
Evident is an exaggeration because such structures are very faint, with typical magnitudes of 26 arcsec-1 or fainter. Even the quietest galaxies, when analyzed in depth, always exhibit interaction structures of extremely weak luminosity.
Tags: Leo Triplet M65 M66 NGC 3628 astronomy nigh sky
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Leo Triplet
Credit: Giuseppe Donatiello
The Leo Triplet (or M66 Group) is a small group of galaxies at 35 million light-years in Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628.
M65 11h 18m 56.0s +13° 05′ 32″
Messier 65 (NGC 3623) is an intermediate spiral galaxy and It was discovered by Charles Messier in 1780.
M66 11h 20m 15.0s +12° 59′ 30″
Messier 66 (NGC 3627) is an intermediate spiral galaxy at 36 million light-years. It was also discovered by Charles Messier in 1780.
NGC 3628 11h 20m 17.0s +13° 35′ 23″
NGC 3628, the Hamburger Galaxy is an unbarred spiral galaxy. It was discovered by William Herschel in 1784
127ED@600mm + EOS 4000D @3200-6400 ISO 15h exp.
Avalon M-zero Obs mount.
Composition of data taken in 2019, 2020, 2022, 2023.
See also this: flic.kr/p/2oqXrVN
Info: www.flickr.com/people/133259498@N05/
Tags: Leo Triplet messier 65 messier 66 ngc 3628 m65 m66 galaxies night sky spce universe
© All Rights Reserved
Leo Triplet
Credit: Giuseppe Donatiello
The Leo Triplet (or M66 Group) is a small group of galaxies at 35 million light-years in Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628.
M65 11h 18m 56.0s +13° 05′ 32″
Messier 65 (NGC 3623) is an intermediate spiral galaxy and It was discovered by Charles Messier in 1780.
M66 11h 20m 15.0s +12° 59′ 30″
Messier 66 (NGC 3627) is an intermediate spiral galaxy at 36 million light-years. It was also discovered by Charles Messier in 1780.
NGC 3628 11h 20m 17.0s +13° 35′ 23″
NGC 3628, the Hamburger Galaxy is an unbarred spiral galaxy. It was discovered by William Herschel in 1784.
Tags: leo triplet messier 65 messier 66 ngc 3628 leo sly space universe night
© All Rights Reserved
Leo Triplet
Credit: ESO/Dss2, Giuseppe Donatiello
(Colorized plates)
The Leo Triplet (or M66 Group) is a small group of galaxies at 35 million light-years in Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628.
M65 11h 18m 56.0s +13° 05′ 32″
Messier 65 (NGC 3623) is an intermediate spiral galaxy and It was discovered by Charles Messier in 1780.
M66 11h 20m 15.0s +12° 59′ 30″
Messier 66 (NGC 3627) is an intermediate spiral galaxy at 36 million light-years. It was also discovered by Charles Messier in 1780.
NGC 3628 11h 20m 17.0s +13° 35′ 23″
NGC 3628, the Hamburger Galaxy is an unbarred spiral galaxy. It was discovered by William Herschel in 1784
Tags: Leo Triplet M65 M66 NGC 3628 galaxies leo night space universe
© All Rights Reserved
Leo Triplet (2020)
Credit: Giuseppe Donatiello
The Leo Triplet (or M66 Group) is a small group of galaxies at 35 million light-years in Leo. This galaxy group consists of the spiral galaxies M65, M66, and NGC 3628.
M65 11h 18m 56.0s +13° 05′ 32″
Messier 65 (NGC 3623) is an intermediate spiral galaxy and It was discovered by Charles Messier in 1780.
M66 11h 20m 15.0s +12° 59′ 30″
Messier 66 (NGC 3627) is an intermediate spiral galaxy at 36 million light-years. It was also discovered by Charles Messier in 1780.
NGC 3628 11h 20m 17.0s +13° 35′ 23″
NGC 3628, the Hamburger Galaxy is an unbarred spiral galaxy. It was discovered by William Herschel in 1784.
Tags: night sky astronomy leo triplet m65 m66 galaxy tidal stream ngc 3628 universe
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