3C 438 | |
---|---|
Observation data (J2000 epoch) | |
Constellation | Cygnus |
Right ascension | 21h55m 52.324s[1] |
Declination | +38° 00′ 28.51″[1] |
Redshift | 0.290[2] |
Distance | 1,113 megaparsecs (3,630 Mly) h−1 0.73[2] |
Apparent magnitude (V) | 19.20[2] |
Characteristics | |
Type | SyG, AGN, X, G, QSO[1] G, FR II, Sy[2] |
Other designations | |
LEDA 2817736, 3C 438, 4C 37.63 |
3C 438 is a Seyfert galaxy and Fanaroff and Riley classIIradio galaxy[1][2] located in the constellation Cygnus. The radio galaxy has two lobes and there is a radio jet leading to the south lobe, which also has a prominent double hot spot.[3] There is age variation across the lobes.[4]
3C 438 is a member of a galaxy cluster and three galaxies are located close to it, the closest one being 4 arcseconds to the northeast.[5] The galaxy cluster has been found when observed by the Chandra X-ray Observatory to have hot intergalactic gas, with a temperature of about 11 KeV, which when discovered in 2007 was the highest ever found, slightly hotter than the Bullet Cluster.[6] The high temperature is the result of the merger of two galaxy clusters, as the relative movement of one subcluster has created a bow shock in the hot gas.[7]
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