| NGC 2484 | |
|---|---|
 NGC 2484 captured bySloan Digital Sky Survey | |
| Observation data (J2000epoch) | |
| Constellation | Lynx |
| Right ascension | 07h 58m 28.1081s[1] |
| Declination | +37° 47′ 11.808″[1] |
| Redshift | 0.04082 0.00001 |
| Heliocentric radial velocity | 11,770 km/s |
| Distance | 558.5 Mly (171.2 Mpc) |
| Apparent magnitude (V) | 14.9 |
| Characteristics | |
| Type | S0[1] |
| Size | 304,000 ly |
| Notable features | Radio galaxy |
| Other designations | |
| PGC 22350,UGC 4125,2MASX J07582810+3747121,MCG+06-18-004, 7C 075509.69+375523.00,NVSS J075828+374713, 4C +37.21, 3C 189, NSA 015647, IRCF J075828.1+374711, CALIFA 011, B2 0755+37,LEDA 22350 | |
NGC 2484 is a largelenticular galaxy located in theLynx constellation.[2] It is situated 560 millionlight-years away from theMilky Way, which given by its apparent dimensions, means NGC 2484 is around 304,000 light-years across.[1] It is classified a Fanaroff and Rileyradio galaxy.[3]
NGC 2484 was discovered on 21 January in 1885, by French astronomerEdouard Stephan, who first described the object as "very faint, very small round with a bright middle and mottled, but not resolved."[4]
NGC 2484 has anactive galactic nucleus. It also hosts aradio source in its center called 3C 189.[5] According to a study, in which exploring themagnetic environment was done, researchers learnt that the rotation measure was complex, which they gave as evidence for anisotropic fluctuations in two regions.[6] An unusual stripe was shown along its jet axis, which has a low uniform rotation measure (RM) in the approaching lobe and arc-like RM structures, showing sign reversals in recedinglobes. They found that the amplitude across its source is inconsistent and believed it is most likely caused by compressed gas around the lobe's leading edges.[6]
Another study shows thex-ray emitting atmospheres of NGC 2484 which indicates it as a low-power radio galaxy.[7] There were multiple x-ray components present and each gas component has a wide range of liner sizes that follow cluster X-rayluminosity andtemperature correlations, hinting no relationship of its presence and its gas friction, although the intergalactic medium is enough to confine the outer radio structures.[7]
NGC 2484 is one of the 8 galaxies to be included as part of the 4th Fermi Point Source Catalogue, among them:MRK 421,MRK 501,NGC 315,3C 264,3C 274 and FR 0 galaxy,4C 39.12.[8] Most of them have lowredshifts. It also producesextragalactic jets[9] and is the source ofgamma-rays.[10]
