Abell S740
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| Abell S740 | |
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| Abell S740 | |
| Observationsdata | |
| Stjärnbild | Kentauren |
| Rektascension | 13t 43m 32.3s |
| Deklination | -38° 11′ 05″ |
| Antal galaxer | 30-49 |
| Avstånd | 450 miljoner l |
| Ljusaste medlemmen | ESO 325-G004 |
| Se också: Galaxhop Lista över galaxhopar | |
Abell S740 är en galaxhop i stjärnbilden Kentauren. Den ligger på mer än 450 miljoner ljusårs avstånd och har en rödförskjutning på 10 073 km/s.
Den ljusaste medlemmen är ESO 325-G004.
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Författare/Upphovsman: Tkgd2007, Licens: CC BY-SA 3.0
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Hubble Illuminates Cluster of Diverse Galaxies (Abell S0740) - This image from NASA's Hubble Space Telescope shows the diverse collection of galaxies in the cluster Abell S0740 that is over 450 million light-years away in the direction of the constellation Centaurus.
The giant elliptical ESO 325-G004 looms large at the cluster's center. The galaxy is as massive as 100 billion of our suns. Hubble resolves thousands of globular star clusters orbiting ESO 325-G004. Globular clusters are compact groups of hundreds of thousands of stars that are gravitationally bound together. At the galaxy's distance they appear as pinpoints of light contained within the diffuse halo.
Other fuzzy elliptical galaxies dot the image. Some have evidence of a disk or ring structure that gives them a bow-tie shape. Several spiral galaxies are also present. The starlight in these galaxies is mainly contained in a disk and follows along spiral arms.
This image was created by combining Hubble science observations taken in January 2005 with Hubble Heritage observations taken a year later to form a 3-color composite. The filters that isolate blue, red and infrared light were used with the Advanced Camera for Surveys aboard Hubble.