Cosmic leviathan

Esahubble_potw2319a_1024

esahubble_potw2319a May 8th, 2023

Credit: ESA/Hubble & NASA, H. Ebeling

A vast galaxy cluster lurks in the centre of this image from the NASA/ESA Hubble Space Telescope. Like a submerged sea monster causing waves on the surface, this cosmic leviathan can be identified by the distortions in spacetime around it. The mass of the cluster has caused the images of background galaxies to be gravitationally lensed; the galaxy cluster has caused a sufficient curvature of spacetime to bend the path of light and cause background galaxies to appear distorted into streaks and arcs of light. A host of other galaxies can be seen surrounding the cluster, and a handful of foreground stars with tell-tale diffraction spikes are scattered throughout the image. This particular galaxy cluster is called eMACS J1823.1+7822, and lies almost nine billion light-years away in the constellation Draco. It is one of five exceptionally massive galaxy clusters explored by Hubble in the hopes of measuring the strengths of these gravitational lenses and providing insights into the distribution of dark matter in galaxy clusters. Strong gravitational lenses like eMACS J1823.1+7822 can help astronomers study distant galaxies by acting as vast natural telescopes which magnify objects that would otherwise be too faint or distant to resolve. This multiwavelength image layers data from eight different filters and two different instruments: Hubble’s Advanced Camera for Surveys and Wide Field Camera 3. Both instruments have the ability to view astronomical objects in just a small slice of the electromagnetic spectrum using filters, which allow astronomers to image objects at precisely selected wavelengths. The combination of observations at different wavelengths lets astronomers develop a more complete picture of the structure, composition and behaviour of an object than visible light alone would reveal. [Image description: A cluster of large galaxies, surrounded by various stars and smaller galaxies on a dark background. The central cluster is mostly made of bright elliptical galaxies that are surrounded by a warm glow. Close to the cluster core is the stretched, distorted arc of a galaxy, gravitationally lensed by the cluster.] Links Pan: Cosmic leviathan

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/potw2319a/

Curator: ESA/Hubble, Baltimore, MD, United States

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
eMACS J1823.1+7822
Esahubble_potw2319a_128
 

Position Details

Position (ICRS)
RA = 18h 23m 22.2s
DEC = 78° 23’ 11.3”
Orientation
North is 110.2° CCW
Field of View
2.4 x 2.0 arcminutes
Constellation
Draco

Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (ACS) Optical (B) 435.0 nm
Cyan Hubble (ACS) Optical (V) 606.0 nm
Yellow Hubble (WFC3) Infrared (Y) 1.1 µm
Yellow Hubble (WFC3) Infrared (YJ) 1.1 µm
Yellow Hubble (WFC3) Infrared (J) 1.3 µm
Green Hubble (ACS) Optical (I) 814.0 nm
Red Hubble (WFC3) Infrared (JH) 1.4 µm
Red Hubble (WFC3) Infrared (H) 1.6 µm
Spectrum_base
Blue
Cyan
Yellow
Yellow
Yellow
Green
Red
Red
Esahubble_potw2319a_1280
×
ID
potw2319a
Subject Category
Subject Name
eMACS J1823.1+7822
Credits
ESA/Hubble & NASA, H. Ebeling
Release Date
2023-05-08T06:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/potw2319a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
ACS, ACS, WFC3, WFC3, WFC3, ACS, WFC3, WFC3
Color Assignment
Blue, Cyan, Yellow, Yellow, Yellow, Green, Red, Red
Band
Optical, Optical, Infrared, Infrared, Infrared, Optical, Infrared, Infrared
Bandpass
B, V, Y, YJ, J, I, JH, H
Central Wavelength
435, 606, 1050, 1100, 1250, 814, 1400, 1600
Start Time
Integration Time
Dataset ID
None, None, None, None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
275.84250403914655, 78.38646452001112
Reference Dimension
2839.0, 2389.0
Reference Pixel
1419.5, 1194.5
Scale
-1.3903169891906589e-05, 1.3903169891906589e-05
Rotation
110.15999999999995
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
ESA/Hubble
URL
https://esahubble.org
Name
Email
Telephone
Address
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr
City
Baltimore
State/Province
MD
Postal Code
21218
Country
United States
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw2319a
Metadata Date
2023-05-03T16:01:43+02:00
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.

 

Providers | Sign In