NGC 2146 is a

barred spiral galaxy A barred spiral galaxy is a spiral galaxy with a central bar-shaped structure composed of stars. Bars are found in about two thirds of all spiral galaxies, and generally affect both the motions of stars and interstellar gas within spiral galaxies ...

type SB(s)ab pec in the constellation

Camelopardalis Camelopardalis is a large but faint constellation of the northern sky representing a giraffe. The constellation was introduced in 1612 or 1613 by Petrus Plancius. Some older astronomy books give Camelopardalus or Camelopardus as alternative fo ...

. The galaxy was discovered in 1876 by

Friedrich August Theodor Winnecke Friedrich August Theodor Winnecke (February 5, 1835 in Groß-Heere, near Hannover – December 3, 1897 in Bonn) was a German astronomer. Winnecke worked at Pulkovo Observatory near Saint Petersburg from 1858 to 1865, but returned to Germany an ...

. It has a diameter of 80,000 lyr. The galaxy's most conspicuous feature is the dusty lanes of a

spiral arm Spiral galaxies form a class of galaxy originally described by Edwin Hubble in his 1936 work ''The Realm of the Nebulae''star formation Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as "stellar nurseries" or "star-forming regions", collapse and form stars. As a branch of astronomy, star formation includ ...

that qualify NGC 2146 as a

starburst galaxy A starburst galaxy is one undergoing an exceptionally high rate of star formation, as compared to the long-term average rate of star formation in the galaxy or the star formation rate observed in most other galaxies. For example, the star formatio ...

. It has been host to two known supernova events: * ''SN 2005V'', a type Ib/c supernova discovered by

LIRIS The Liri (Latin Liris or Lyris, previously, Clanis; Greek: ) is one of the principal rivers of central Italy, flowing into the Tyrrhenian Sea a little below Minturno under the name Garigliano. Source and route The Liri's source is in the Mont ...

on 30 January 2005. * ''SN 2018zd'', a type II supernova (possibly type IIn and maybe the first electron-capture supernova), was discovered on 2 March 2018 by

Koichi Itagaki This is a list of minor-planet discoverers credited by the Minor Planet Center with the discovery of one or several minor planets (such as near-Earth and main-belt asteroids, Jupiter trojans and distant objects). , the discovery of 612,011 numb ...

Gallery

File:SN 2018zd wikipedia.png, SN 2018zd, imaged at Northolt Branch Observatories on 7 March 2018. At that time, the supernova was visible at magnitude +14.0 and brightening.

References

External links

* Barred spiral galaxies Peculiar galaxies Starburst galaxies Luminous infrared galaxies Camelopardalis (constellation)

2146 In contemporary history, the third millennium of the anno Domini or Common Era in the Gregorian calendar is the current millennium spanning the years 2001 to 3000 (21st to 30th centuries). Ongoing futures studies seek to understand what ...

03429 018797 {{Spiral-galaxy-stub