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Messier 81 is the largest galaxy in the M81 Group, a group of 34 in the constellation Ursa Major. [28] At approximately 11.7 Mly (3.6 Mpc ) from the Earth, it makes this group and the Local Group , containing the Milky Way , [ 28 ] relative neighbors in the Virgo Supercluster .
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]
NGC 4236 (also known as Caldwell 3) is a barred Magellanic spiral galaxy located in the constellation Draco. The galaxy is a member of the M81 Group, a group of galaxies located at a distance of approximately 11.7 Mly (3.6 Mpc) from Earth. [3] The group also contains the spiral galaxy Messier 81 and the starburst galaxy Messier 82. [3]
The galaxy is named after Erik Holmberg who first described it though it was first found by Sidney van den Bergh. [3] Based on the observed age distribution of stars it contains, a whole 20% of its stellar mass formed within the last 200 Myr, making it the youngest nearby galaxy. [4] It is also home to one of two yellow supergiant eclipsing ...
It is a member of the M81 Group [4] and lies 1° 20 ′ to the southwest of Messier 81. [11] The projected separation of this galaxy from the M81 Group is 190 kpc. [6] The morphological classification of this galaxy is SAa, [7] which matches an unbarred spiral galaxy (SA) with very tightly-wound spiral arms (a). The actual visual form of the ...
Most distant (difficult) naked eye object. Closest unbarred spiral galaxy to us and third largest galaxy in the Local Group. 61,100 ly 96 Andromeda XXI [68] dSph [55] 2.802 0.859 −9.9 Local Group: Satellite of Andromeda 97 Tucana Dwarf: dE5 2.87 0.88 [7] −9.16 15.7 [1] Local Group [7] Isolated group member — a 'primordial' galaxy [69] 98 ...
The galaxy was discovered by German-British astronomer William Herschel on 1 April 1790. [3] The SIMBAD database lists NGC 3079 as a Seyfert II Galaxy, i.e. it has a quasar-like nucleus with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable. [4]
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