| EGS-zs8-1 | |
|---|---|
 EGS-zs8-1 viewed by the Hubble Space Telescope | |
| Observation data (J2000[1] epoch) | |
| Constellation | Boötes[1]/Ursa Major |
| Right ascension | 14h 20m 34.89s[1] |
| Declination | +53° 00′ 15.4″[1] |
| Redshift | 7.7[1] |
| 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 | |
EGS-zs8-1 is a high-redshift Lyman-break galaxy found at the northern constellation of Boötes.[2] 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.[3][4] In July 2015, EGS-zs8-1 was surpassed by EGSY8p7 (EGSY-2008532660).[citation needed]
- ^ a b c d e "Astronomers Set a New Galaxy Distance Record - Fast Facts". HubbleSite. 5 May 2015. STScI-2015-22. Retrieved 9 May 2015.
- ^ Oesch, P.A.; et al. (3 May 2015). "A Spectroscopic Redshift Measurement for a Luminous Lyman Break Galaxy at z=7.730 using Keck/MOSFIRE". The Astrophysical Journal. 804 (2): L30. arXiv:1502.05399. Bibcode:2015ApJ...804L..30O. doi:10.1088/2041-8205/804/2/L30. S2CID 55115344.
- ^ Villard, Ray; Chou, Felicia (5 May 2015). "Astronomers Set a New Galaxy Distance Record". HubbleSite. Retrieved 7 May 2015.
- ^ Cite error: The named reference
APwas invoked but never defined (see the help page).