Ground-based view of the sky around the galaxies NGC 1052-DF4 NGC & 1052-DF2

This image shows the sky around the ultra diffuse galaxies NGC 1052-DF4 and NGC 1052-DF2. It was created from images forming part of the Digitized Sky Survey 2. NGC 1052-DF2 is basically invisible in this image. 

In 2018 an international team of researchers using the NASA/ESA Hubble Space Telescope and several other observatories uncovered, for the first time, a galaxy in our cosmic neighbourhood that is missing most of its dark matter. This discovery of the galaxy NGC 1052-DF2 was a surprise to astronomers, as it was understood that Dark matter (DM) is a key constituent in current models of galaxy formation and evolution. In fact, without the presence of DM, the primordial gas would lack enough gravity pull to start collapsing and forming new galaxies. A year later, another galaxy that misses dark matter was discovered, NGC 1052-DF4, which further triggered intense debates among astronomers about the nature of these objects.

Now, new Hubble data have been used to explain the reason behind the missing dark matter in NGC 1052-DF4, which resides 45 million light-years away, providing further evidence for tidal disruption. By studying the galaxy’s light and globular cluster distribution, astronomers have concluded that the gravity forces of the neighbouring galaxy NGC 1035 stripped the dark matter from NGC 1052-DF4 and are now tearing the galaxy apart.

Credit:

ESA/Hubble, NASA, Digitized Sky Survey 2
Acknowledgement: Davide de Martin

About the Image

Id:heic1806b
Type:Observation
Release date:28 March 2018, 19:00
Related releases:heic2019, heic1806
Size:11137 x 8779 px

About the Object

Name:NGC 1052-DF2
Type:Local Universe : Galaxy
Distance:65 million light years
Constellation:Cetus
Category:Galaxies

Image Formats

Large JPEG
32.5 MB
Screensize JPEG
250.9 KB

Zoomable


Wallpapers

1024x768
230.6 KB
1280x1024
387.7 KB
1600x1200
575.8 KB
1920x1200
710.2 KB
2048x1536
980.0 KB

Coordinates

Position (RA):2 41 5.29
Position (Dec):-8° 15' 28.23"
Field of view:187.15 x 147.52 arcminutes
Orientation:North is 0.3° left of vertical


Colours & filters

BandWavelengthTelescope
Optical
R
660 nm Digitized Sky Survey 2
Optical
I
797 nm Digitized Sky Survey 2

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