Cluster Galaxy (IMAGE)

North Carolina State University

Cluster Galaxy

Caption

An artist’s rendering shows how a cluster of galaxies (lensing cluster) acts as a gravitational lens that magnifies and extends the light from a background galaxy. This results in a projected image (marked in the rectangle panel) that is brighter and easier to detect with a telescope. This allowed astronomers to use Keck Observatory’s KCWI instrument to zoom in on the projected image and map out the gas of two giant DLAs that are two-thirds the size of the Milky Way.

Credit

W. M. Keck Observatory/Adam Makarenko

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