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

Esahubble_heic1806b_1024

esahubble_heic1806b March 28th, 2018

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

This image shows the sky around the ultra diffuse galaxiesNGC 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. In2018an 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 galaxys 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.

Provider: Hubble Space Telescope | ESA

Image Source: https://www.spacetelescope.org/images/heic1806b/

Curator: ESA/Hubble, Garching bei München, None, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 1052-DF2
Subject - Local Universe
Galaxy
Esahubble_heic1806b_128
 

Position Details

Position (ICRS)
RA = 2h 41m 5.3s
DEC = -8° 15’ 28.2”
Orientation
North is 0.3° CCW
Field of View
3.1 x 2.5 degrees
Constellation
Cetus

Color Mapping

  Telescope Spectral Band Wavelength
Orange DSS2 (None) Optical (I) 797.5 nm
Cyan DSS2 (None) Optical (R) 660.0 nm
Spectrum_base
Orange
Cyan
Esahubble_heic1806b_1280
×
ID
heic1806b
Subject Category
C.5  
Subject Name
NGC 1052-DF2
Credits
ESA/Hubble, NASA, Digitized Sky Survey 2Acknowledgement: Davide de Martin
Release Date
2018-03-28T19:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/heic1806b/
Type
Observation
Image Quality
Distance Notes
Facility
Digitized Sky Survey 2, Digitized Sky Survey 2
Instrument
None, None
Color Assignment
Orange, Cyan
Band
Optical, Optical
Bandpass
I, R
Central Wavelength
797.5, 660
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
40.2720448463, -8.25784041412
Reference Dimension
11137.0, 8779.0
Reference Pixel
5568.5, 4389.5
Scale
-0.000280067954915, 0.000280067954915
Rotation
0.2799999999999998
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
http://www.spacetelescope.org
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
None
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
heic1806b
Metadata Date
2018-03-15T18:44:55+01:00
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.