• Source: NGC 4214

NGC 4214 is a dwarf barred irregular galaxy located around 10 million light-years away in the constellation Canes Venatici. It was discovered on 28 April 1785 by German-British astronomer William Herschel. NGC 4214 is a member of the M94 Group.




Characteristics



NGC 4214 is both larger and brighter than the Small Magellanic Cloud as well as a starburst galaxy, with the largest star-forming regions (NGC 4214-I and NGC 4214-II) in the galaxy's center. Of the two, NGC 4214-I contains a super star cluster rich in Wolf-Rayet stars and NGC 4214-II is younger (age less than 3 million years), including a number of star clusters and stellar associations.
NGC 4214 also has two older super star clusters, both with an age of 200 million years and respective masses of 2.6*10.5 and 1.5*106 solar masses.
Two satellites are known to exist around the vicinity of NGC 4214. One is DDO 113, which has an absolute V-band magnitude of −12.2. It stopped star formation around 1 billion years ago. Another, more recently discovered object is MADCASH-2, officially named MADCASH J121007+352635-dw. The name refers to the MADCASH (Magellanic Analog Dwarf Companions and Stellar Halos) project. It is similar to typical ultra-faint dwarf galaxies, with an absolute V-band magnitude of −9.15, except in that it shows evidence of multiple episodes of star formation in its recent past: one around 400 million years ago, and another 1.5 billion years ago.
One supernova has been observed in NGC 4214: SN 1954A (type Ib, mag. 9.8). In addition, the galaxy has hosted one luminous blue variable: SN 2010U (type LBV, mag. 16).




See also


NGC 4236 - a similar irregular galaxy
List of NGC objects (4001–5000)




References






External links


Media related to NGC 4214 at Wikimedia Commons
Hubble Heritage site: Detailed information on the HST picture of 4214
Galaxy NGC 4214: A star formation laboratory ESA/Hubble photo release

Kata Kunci Pencarian:

• Daftar galaksi terdekat
• Daftar objek NGC 4001 - 5000
• Messier 98
• NGC 4214
• NGC 4244
• List of nearest galaxies
• Magellanic spiral
• M94 Group
• Wolf–Rayet star
• List of NGC objects (4001–5000)
• Herschel 400 Catalogue
• List of luminous blue variable stars
• Evan D. Skillman