Image:Abell S740, cropped to ESO 325-G004.jpg

Description	Hubble Illuminates Cluster of Diverse Galaxies (Abell S740), cropped to ESO 325-G004.
Source	http://hubblesite.org/newscenter/archive/releases/galaxy/elliptical/2007/08/image/a/warn/
Date	January 2007
Author	J. Blakeslee (Washington State University)
Permission (Reusing this image)	This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (NASA copyright policy page or JPL Image Use Policy). Deutsch | English | Español | Français | Nederlands | Português | Русский | ‪中文(简体)‬ | ‪中文(繁體)‬ | +/- Warnings: Use of NASA logos, insignia and emblems are restricted per US law 14 CFR 1221. The NASA website hosts a large number of images from the Soviet/Russian space agency, and other non-American space agencies. These are not necessarily in the public domain. Materials from the Hubble Space Telescope may be copyrighted if they do not explicitly come from the STScI. [1] All materials created by the SOHO probe are copyrighted and require permission for commercial non-educational use. [2] Images featured on the Astronomy Picture of the Day (APOD) web site may be copyrighted. [3]
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From the NASA source site [4]:

ABOUT THIS IMAGE:

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) villard@stsci.edu or

John Blakeslee

Washington State University, Pullman, Wash.

(phone) 509-335-2414, (e-mail) jblakes@wsu.edu or

Keith Noll

Space Telescope Science Institute, Baltimore, Md.

(phone) 410-338-1828, (e-mail) noll@stsci.edu

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)

• Galaxy formation and evolution
• Hubble sequence
• Elliptical galaxy