JKCS 041
| Data from JKCS 041 galaxy clusters |
|
|---|---|
| Constellation | whale |
|
Position Epoch : J2000.0 Equinox : J2000.0 |
|
| Right ascension | 02 h 26 m 44 s |
| declination | −4 ° 41 ′ 37 ″ |
| Appearance | |
| Apparent brightness (visual) | ? like |
| Angular expansion | ? |
| Number of galaxies | ? |
| Dimensions | 2.9 · 10 14 solar masses |
| Brightest member | ? |
| Physical data | |
| Redshift | approx. 1.9 |
| distance | about 10.2 billion light years |
| history | |
| discovery | United Kingdom Infrared Telescope |
| Discovery date | 2006 |
| Catalog names | |
| JKCS 041 | |
JKCS 041 is a galaxy cluster in the constellation Whale .
At a distance of 10.2 billion light years , it is one of the most distant known galaxy clusters. It is thus at the age limit at which astronomers expect galaxy clusters. This results from the assumption of the scientists that it took a while after the Big Bang for the effects of gravity to form clusters of galaxies. JKCS 041 replaced the record holder XMMXCS J2215.9-1738 discovered in 2006 at a distance of 9.2 billion light years.
Infrared observations with the United Kingdom Infrared Telescope provided the first indications of JKCS 041 in 2006 . Measurements with other instruments in the optical and infrared range, including the Canada-France-Hawaii Telescope and the Spitzer Space Telescope , finally confirmed the great distance of the galaxies in the cluster. But only the detection of hot gas with a diameter of 36.6 "(300 kpc ) between the galaxies with the Chandra X-ray telescope provided the definitive proof that the cluster is a real, gravitationally bound galaxy cluster.
Web links
- JKCS 041: A Color-detected Galaxy Cluster at z phot ~ 1.9 with Deep Potential Well as Confirmed by X-ray Data (PDF; 870 kB)
Individual evidence
- ↑ JKCS041: Galaxy Cluster Smashes Distance Record
- ↑ Galaxy Cluster Smashes Distance Record ( Memento from December 16, 2005 in the Internet Archive )
- ↑ JKCS 041: A Color-detected Galaxy Cluster
- ↑ weltderphysik.de: New record: Galaxy clusters in the young cosmos , accessed on October 23, 2018