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Gravitational interactions of M81 with M82 and NGC 3077 [29] have stripped hydrogen gas away from all three galaxies, forming gaseous filamentary structures in the group. [29] Moreover, these interactions have allowed interstellar gas to fall into the centers of M82 and NGC 3077, leading to vigorous star formation or starburst activity there. [29]
The M81 Group is a galaxy group in the constellations Ursa Major and Camelopardalis that includes the galaxies Messier 81 and Messier 82, as well as several other galaxies with high apparent brightnesses. [1] The approximate center of the group is located at a distance of 3.6 Mpc, making it one of the nearest groups to the Local Group. [1]
M82 is being physically affected by its larger neighbor, the spiral M81. Tidal forces caused by gravity have deformed M82, a process that started about 100 million years ago. This interaction has caused star formation to increase tenfold compared to "normal" galaxies. M82 has undergone at least one tidal encounter with M81 resulting in a large ...
NGC 3077 is a small disrupted elliptical galaxy, a member of the M81 Group, which is located in the northern constellation Ursa Major.Despite being similar to an elliptical galaxy in appearance, it is peculiar for two reasons.
This encompasses about 50 major Local Group galaxies, and some that are members of neighboring galaxy groups, the M81 Group and the Centaurus A/M83 Group, and some that are currently not in any defined galaxy group.
These two galaxies are in the process of colliding and merging. NGC 7318 (Arp 319, NGC 7318A & NGC 7318B) 2 galaxies These are two starting to collide Four galaxies in CL0958+4702: 4 galaxies These four near-equals at the core of galaxy cluster CL 0958+4702 are in the process of merging. [148] Galaxy protocluster LBG-2377: z=3.03
SN 2014J was a type-Ia supernova in Messier 82 (the 'Cigar Galaxy', M82) discovered in mid-January 2014. [3] It was the closest type-Ia supernova discovered for 42 years, and no subsequent supernova has been closer as of 2023. The supernova was discovered by chance during an undergraduate teaching session at the University of London Observatory.
[8] [4] However, due to what was thought for a long time to be the incorrect addition of Messier 102, the total number remained 102. Other astronomers, using side notes in Messier's texts, eventually filled out the list up to 110 objects. [9] The catalogue consists of a diverse range of astronomical objects, from star clusters and nebulae to ...