3C 48
From Infogalactic: the planetary knowledge core
| 3C 48 | |
|---|---|
| File:Radio map of quasar 3C48.jpg | |
| Observation data (Epoch J2000) | |
| Constellation | Triangulum |
| Right ascension | 01h 37m 41.1s[1] |
| Declination | +33° 09′ 32″[1] |
| Redshift | 110,024 ± 0 km/s[1] 0.367[1] |
| Distance | 3.9 billion light-years (Light travel time)[1] 4.5 billion light-years (present)[1] |
| Type | E[2] |
| Apparent dimensions (V) | 0.6´X0.5´ |
| Apparent magnitude (V) | 16.2 |
| Notable features | First quasar discovered |
| Other designations | |
| PG 0134+329, QSO B0134+329 | |
| See also: Quasar, List of quasars | |
3C48 was the first of many faint, starlike quasi-stellar objects which later were named quasars.[3]
3C48 was the first source in the Third Cambridge Catalogue of Radio Sources for which an optical identification was found by Allan Sandage and Thomas A. Matthews in 1960 through interferometry.[4] Jesse L. Greenstein and Thomas Matthews found that it had a redshift of 0.367, making it one of the highest redshift sources then known.[5] It was not until 1982 that the surrounding faint galactic "nebulosity" was confirmed to have the same redshift as 3C48, cementing its identification as an object in a distant galaxy.[6] This was also the first solid identification of a quasar with a surrounding galaxy at the same redshift.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Simbad
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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