Perseus dwarf galaxy

This object, [CGW2003] J031931.7+4131, is one of four dwarf galaxies that is part of a census of small galaxies in the tumultuous heart of the nearby Perseus galaxy cluster.

The galaxies appear smooth and symmetrical, suggesting that they have not been tidally disrupted by the pull of gravity in the dense cluster environment. Larger galaxies around them, however, are being ripped apart by the gravitational tug of other galaxies.

The image, taken by NASA/ESA’s Hubble Space Telescope in 2005, is an evidence that the undisturbed galaxies are enshrouded by a "cushion" of dark matter, which protects them from their rough-and-tumble neighborhood.

Credit:

NASA, ESA and C. Conselice (University of Nottingham, U.K.)

About the Image

NASA press release
NASA caption
Id:heic0903b
Type:Observation
Release date:12 March 2009, 14:00
Related releases:heic0903
Size:500 x 500 px

About the Object

Name:Perseus Cluster, [CGW2003] J031931.7+4131
Type:• Local Universe : Galaxy : Size : Dwarf
• X - Galaxies Images/Videos
Distance:250 million light years

Colours & filters

BandWavelengthTelescope
Optical
V
555 nm Hubble Space Telescope
ACS
Infrared
I
814 nm Hubble Space Telescope
ACS

Image Formats

Large JPEG
182.9 KB
Screensize JPEG
380.1 KB

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