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(Redirected from Arp 25)
Galaxy in the constellation Cepheus
NGC 2276 is an intermediate spiral galaxy in the constellation Cepheus. The galaxy lies 120 million light-years away from Earth. NGC 2276 has an asymmetrical appearance, most likely caused by gravitational interactions with its neighbor, elliptical galaxyNGC 2300. NGC 2276 is traveling with an orbital velocity of about 968 km/s due to its neighbor. Trailing NGC 2276 is a long tail of interstellar medium about 300,000 light-years (100,000 kpc) long, formed by ram pressure stripping.
One of the many starburst spiral arms contains an intermediate mass black hole with 50,000 times the mass of the Sun, named NGC 2276-3c. NGC 2276-3c has produced two jets: a large-scale radio jet, approximately 2,000 light years long, and an "inner jet" about 6 light years long. The galaxy shows an enhanced rate of star formation that may have been triggered by a collision with a dwarf galaxy, or by the gravitational interaction with its neighbor compressing gas and dust.
It was discovered by Friedrich August Theodor Winnecke in 1876. In the Atlas of Peculiar Galaxies, the galaxy is mentioned twice, once as Arp 25, in the category spiral galaxies with one heavy arm, and one more time as Arp 114, in the category elliptical galaxies close to and perturbing spiral galaxies, in pair with NGC 2300.
NGC 2276 has been home to six supernovae since 1962.
Roberts, I. D.; Van Weeren, R. J.; De Gasperin, F.; Botteon, A.; Edler, H. W.; Ignesti, A.; Matijević, L.; Tomičić, N. (2024). "A 100 kpc ram pressure tail trailing the group galaxy NGC 2276". Astronomy & Astrophysics. 689: A22. arXiv:2406.09221. Bibcode:2024A&A...689A..22R. doi:10.1051/0004-6361/202450672.
NGC 2276 (left) and NGC 2300 (right)
HST Image
The trailing arms of NGC 2276
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