MACS1149-JD1 | |
---|---|
![]()
Hubble and ALMA image of galaxy cluster MACS J1149.5+2223 with an inset of MACS1149-JD1
| |
Observation data (J2000 epoch) | |
Constellation | Leo |
Right ascension | 11h49m 33.584s |
Declination | +22° 24′ 45.78″ |
Redshift | 9.1096±0.0006[1] |
Heliocentric radial velocity | 2878008±59958 km/s[2] |
Distance | 30.37 Gly (9.311 Gpc)[3] (co-moving) 13.28 Gly (4.07 Gpc)[4] (light travel) |
Grouporcluster | MACS J1149.5+2223 |
Apparent magnitude (V) | 26.8[3] |
Characteristics | |
Type | Dwarf |
Mass | 1.1+0.5 −0.2×109 [1] M☉ |
Size | 3,000 ly (diameter) |
Apparent size (V) | 0.00075 x 0.00075 |
Other designations | |
[PCB2012] 3020, [KOI2016] HFF4C-YJ1, [ZZI2017] 663[5] |
MACS1149-JD1 (also known as JD1 and PCB2012 3020) is a young galaxy that is known for being one of the farthest known galaxies from Earth. It galaxy was discovered in 2014, and confirmed in 2018.[6] The JD1 galaxy is at a redshift of about z=9.11,[1] or about 13.28 billion ly (4.07 billion pc) away from Earth meaning that it formed when the universe was around 500 million years old.[4][7]
The Carbon and Neon abundance it JD1 is below the star abundance ratio. The Carbon abundance ratio is suggestive of recent star formation and type-ll supernova has enriched the interstellar medium (ISM) with Oxygen but intermediate mass stars have not yet enrich the interstellar medium with Carbon.[8]
Due to a lack of old population stars detected, JD1 is probably a young galaxy.[8]