Striking image shows mass distribution of nearby galaxy cluster

Noirlab_noirlab2012a_1024

noirlab_noirlab2012a July 1st, 2020

Credit: CTIO/NOIRLab/NSF/AURA

Using the Dark Energy Camera at Cerro Tololo Inter-American Observatory, a Program of NSFs NOIRLab, astronomers are measuring weak gravitational lensing to map the distribution of mass in nearby galaxy clusters. As well as producing remarkable images like this one, the information will shed light on the relationships between the constituent parts of nearby galaxy clusters, such as gas, stellar populations, and dark matter. The galaxy cluster Abell 3827 is the subject of this striking image. In addition to featuring a field of galaxies and foreground stars, the image is overlaid with a map with hues of red, blue and purple. Though they are attractive, these colors arent for decoration they represent the distribution of mass in the heart of Abell 3827 with red showing the largest mass concentration.

Provider: NOIRLab

Image Source: https://noirlab.edu/public/images/noirlab2012a/

Curator: NSF's NOIRLab, Tucson, AZ, USA

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
Abell 3827
Noirlab_noirlab2012a_128
 

Position Details

Position (ICRS)
RA = 22h 2m 53.5s
DEC = -60° 2’ 0.2”
Orientation
North is 0.2° CCW
Field of View
-49.3 x -49.3 arcminutes
Constellation
Indus

Color Mapping

  Telescope Spectral Band Wavelength
Orange None (None) Optical (None) 0.0
Blue Vctor M. Blanco 4-meter Telescope (DECam) Optical (lensing surface mass) 0.0
Red Vctor M. Blanco 4-meter Telescope (DECam) Optical (i) 772.0 nm
Green Vctor M. Blanco 4-meter Telescope (DECam) Optical (r) 637.0 nm
Blue Vctor M. Blanco 4-meter Telescope (DECam) (g) 472.0 nm
Spectrum_xray1w
Orange
Blue
Red
Green
Blue
Noirlab_noirlab2012a_1280
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ID
noirlab2012a
Subject Category
Subject Name
Abell 3827
Credits
CTIO/NOIRLab/NSF/AURA
Release Date
2020-07-01T13:26:19
Lightyears
Redshift
Reference Url
https://noirlab.edu/public/images/noirlab2012a/
Type
Observation
Image Quality
Distance Notes
Facility
None, Vctor M. Blanco 4-meter Telescope, Vctor M. Blanco 4-meter Telescope, Vctor M. Blanco 4-meter Telescope, Vctor M. Blanco 4-meter Telescope
Instrument
None, DECam, DECam, DECam, DECam
Color Assignment
Orange, Blue, Red, Green, Blue
Band
Optical, Optical, Optical, Optical
Bandpass
None, lensing surface mass, i, r, g
Central Wavelength
0, 0, 772, 637, 472
Start Time
Integration Time
Dataset ID
None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
330.723120789, -60.0333785043
Reference Dimension
5625.0, 5625.0
Reference Pixel
2031.95574951, 2318.48132324
Scale
0.000146105696507, -0.000146118665605
Rotation
0.20182369567385
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
NSF's NOIRLab
URL
https://noirlab.edu
Name
Email
Telephone
Address
950 North Cherry Ave.
City
Tucson
State/Province
AZ
Postal Code
85719
Country
USA
Rights
Creative Commons Attribution 4.0 International License
Publisher
NSF's NOIRLab
Publisher ID
noirlab
Resource ID
noirlab2012a
Metadata Date
2020-05-09T17:01:42+02:00
Metadata Version
1.1
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.