EGS-zs8-1
EGS-zs8-1 is a high-redshift Lyman-break galaxy found at the northern constellation of Boötes. In May 2015, EGS-zs8-1 had the highest spectroscopic redshift of any known galaxy, meaning EGS-zs8-1 was the most distant and the oldest galaxy observed. In July 2015, EGS-zs8-1 was surpassed by EGSY8p7 (EGSY-2008532660).
| EGS-zs8-1 | |
|---|---|
EGS-zs8-1 viewed by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes/Ursa Major |
| Right ascension | 14h 20m 34.89s |
| Declination | +53° 00′ 15.4″ |
| Redshift | 7.7 |
| Heliocentric radial velocity | 2,098,548 km/s (1,303,977 mi/s) |
| Galactocentric velocity | 2,098,671 km/s (1,304,054 mi/s) |
| Distance | 13.1 billion ly (4.0 billion pc) (light travel distance) 29.5 billion ly (9.0 billion pc) (comoving distance) |
| Apparent magnitude (V) | 25.3J |
| Characteristics | |
| Type | Lyman-break galaxy |
| Mass | 8×109 M☉ |
| Size | 15 kly (diameter) |
| Apparent size (V) | 0.004 x 0.0018 |
| Other designations | |
| GCF2012 8053, CANDELS J142034.88+530015.1, SSTSL2 J142034.90+530015.1, SYM2017 9104 | |
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