News Release Archive:

News Release 425 of 1051

February 5, 2007 09:00 AM (EST)

News Release Number: STScI-2007-08

Hubble Illuminates Cluster of Diverse Galaxies


Image: Hubble Illuminates Cluster of Diverse Galaxies

Hubble Illuminates Cluster of Diverse GalaxiesSTScI-PRC2007-08

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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.

For more information, contact:

Ray Villard
Space Telescope Science Institute, Baltimore, Md.
(phone) 410-338-4514, (e-mail) or

John Blakeslee
Washington State University, Pullman, Wash.
(phone) 509-335-2414, (e-mail) or

Keith Noll
Space Telescope Science Institute, Baltimore, Md.
(phone) 410-338-1828, (e-mail)

Object Names: ESO 325-G004, Abell S0740

Image Type: Astronomical

Credit: NASA, ESA, and The Hubble Heritage Team (STScI/AURA)

Acknowledgment: J. Blakeslee (Washington State University)


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