Infrared/Optical Photo of Galaxy Cluster (IMAGE)

Center for Astrophysics | Harvard & Smithsonian

Infrared/Optical Photo of Galaxy Cluster

Caption

An infrared/optical representative-color image of a massive galaxy cluster located 7 billion light-years from Earth. This cluster weighs as much as 800 trillion suns. Galaxies with "old" stellar populations, like modern-day ellipticals, are circled in yellow; galaxies with "young" stellar populations, like modern-day spirals, are circled in blue. Images taken with the Infrared Array Camera on the Spitzer Space Telescope and the Mosaic-II camera on the Blanco 4-meter telescope at the Cerro Tololo Inter-American Observatory. The field of view is 4 x 4 arcminutes.

Credit

Infrared Image: NASA/JPL-Caltech/M. Brodwin (Harvard-Smithsonian CfA) Optical Image: CTIO/J. Mohr (LMU Munich)

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