Gemini Images Galaxy That Is 99.99 Percent Dark Matter

The dark galaxy Dragonfly 44. The image on the left is a wide view of the galaxy taken with the Gemini North telescope using the Gemini Multi-Object Spectrograph (GMOS) as part of a Fast Turnaround program. The close-up on the right is from the same very deep image, revealing the large, elongated galaxy, and halo of spherical clusters of stars around the galaxy’s core, similar to the halo that surrounds our Milky Way Galaxy. Dragonfly 44 is very faint for its mass, and consists almost entirely of Dark Matter.

Credit:

Pieter van Dokkum, Roberto Abraham, Gemini Observatory/AURA.

About the Image

Id:gemini1608a
Type:Collage
Release date:Aug. 24, 2016
Related releases:gemini1608
Size:1858 x 1302 px

About the Object

Name:Dragonfly 44
Category:Galaxies

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Colors & filters

BandTele-scope
Gemini North
GMOS-N