Abell 370 seen by the Hubble Space Telescope on 16 July 2009.
|Observation data (Epoch J2000)|
|Right ascension||02h 39m 50.5s|
|Declination||−01° 35′ 08″|
|1.464 Gpc (4.775 Gly) h−1|
Abell 370 is a galaxy cluster located approximately 4 billion light-years away from the Earth (at redshift z = 0.375), in the constellation Cetus. Its core is made up of several hundred galaxies. It was catalogued by George Abell, and is the most distant of the clusters he catalogued.
In the 1980s astronomers of Toulouse Observatory discovered a gravitational lens in space between Earth and Abel 370. A curious arc had been observed earlier near the cluster, but the astronomers were able to recognized it as this phenomenon.
Abell 370 appears to include several arcs of light, including the largest ever discovered with 30" long. These arcs or deformations are mirages caused by gravitational lensing of massive and dark objects located between the observer and the distant galaxies. This cluster shows an apparent magnitude of +22.
In 2009, study in the field of Abell 370 revealed a grouping of background galaxies lensed and distorted by the cluster into an arc with the appearance of a dragon, hence nicknamed The Dragon by NASA scientists. Its head is composed of a spiral galaxy, with another image of the spiral composing the tail. Several other images form the body of the dragon, all overlapping. These galaxies all lie approximately 5 billion light years away.
BUFFALO’s survey view on Abell 370.
Abell 370 Parallel Field with Asteroids.
Abell 370 is one of the very first galaxy clusters in which astronomers observed the phenomenon of gravitational lensing.
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- "BUFFALO charges towards the earliest galaxies - New Hubble project provides wide-field view of the galaxy cluster Abell 370". www.spacetelescope.org. Retrieved 14 September 2018.
- "Abell 370 Parallel Field with Asteroids". www.spacetelescope.org. Retrieved 6 November 2017.
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- Gravitationally lensed images in Abell 370 Authors: Grossman, S. A. & Narayan, R. Bibcode: 1989ApJ...344..637G
- Image of Abell 370 released bu STScI HST in May 2017 : http://hubblesite.org/news_release/news/2017-20
- Abell 370 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- A lot of galaxies need guarding in this NASA Hubble view