Cosmos Redshift 7
Coordinates: 10h 00m 58.005s, +01° 48′ 251″
Cosmos Redshift 7 | |
---|---|
Observation data (Reionization epoch) | |
Constellation | Sextans |
Right ascension | 10h 00m 58.005s[1] |
Declination | +01° 48′ 15.251″[1] |
Redshift | 6.604[1] |
Distance | 12.9 billion light-years[2] |
Characteristics | |
Type | Lyman-alpha emitter[1] |
Notable features | Galaxy Cosmos Redshift 7 is reported to be three times brighter than the brightest distant galaxy known up to the time of its discovery and to contain some of the earliest first stars that produced the chemical elements needed for the later formation of planets and life as it is known.[1] |
Other designations | |
COSMOS Redshift 7; Galaxy Cosmos Redshift 7; Galaxy CR7; CR7 |
Cosmos Redshift 7 (also known as COSMOS Redshift 7, Galaxy Cosmos Redshift 7, Galaxy CR7 or CR7) is a
light travel time of 12.9 billion years, it is one of the oldest, most distant galaxies known
.
CR7 shows some of the expected signatures of Population III stars i.e. the first generation of stars produced during early galaxy formation.[1][2][3][4][5] These signatures were detected in a bright pocket of blue stars; the rest of the galaxy contains redder Population II stars.[3] However, recent studies show no evidence for population III stars in CR7.[6]
Description
Galaxy Cosmos Redshift 7 contains old
Population III (stars with extremely poor metallicity), according to astronomers,[1][2] and is three times brighter than the brightest distant galaxies (redshift, z > 6)[1][7] detected up to the time of its discovery.[3][5]
Discovery
Astronomers led by
University of Leiden and University of Lisbon.[1] The name of the galaxy (Cosmos Redshift 7 Galaxy) was inspired by football player Cristiano Ronaldo, also popularly known as CR7. [3][8][9][10]
See also
References
- ^ S2CID 18471887.
- ^ a b c Overbye, Dennis (17 June 2015). "Astronomers Report Finding Earliest Stars That Enriched Cosmos". The New York Times. Retrieved 17 June 2015.
- ^ a b c d "Best Observational Evidence of First Generation Stars in the Universe" (Press release). European Southern Observatory. 17 June 2015.
- ^ Staff (17 June 2015). "Brightest galaxy and first-generation stars". Earth & Sky. Retrieved 17 June 2015.
- ^ a b c d Pittalwala, Iqbal (17 June 2015). "Astronomers Find Best Observational Evidence of First Generation Stars in the Universe". University of California, Riverside. Retrieved 17 June 2015.
- arXiv:1609.00727.
- .
- ^ Staff (17 June 2015). "Traces of Earliest Stars That Enriched Cosmos Are Spied". The New York Times. Retrieved 17 June 2015.
- ^ Staff (18 June 2015). "Cristiano Ronaldo: CR7 name given to discovered galaxy". BBC. Retrieved 18 June 2015.
- ^ Staff (18 June 2015). "Cristiano Ronaldo: CR7 gets his own galaxy". CNN. Retrieved 18 June 2015.
External links
- COSMOS Redshift 7 (CR7) - the brightest galaxy in the early Universe on YouTube
- Cosmos Redshift 7 galaxy on Deep Space Map