Strings of homeless stars

Esahubble_potw1824a_1024

esahubble_potw1824a June 11th, 2018

Credit: ESA/Hubble & NASA, RELICS

This sparkling Picture of the Week features a massive galaxy cluster named RXC J0232.2-4420. This image was taken by Hubbles Advanced Camera for Surveys and Wide-Field Camera 3 as part of an observing programme called RELICS (Reionization Lensing Cluster Survey). RELICS imaged 41 massive galaxy clusters with the aim of finding the brightest distant galaxies for the forthcoming NASA/ESA/CSA James Webb Space Telescope (JWST) to study. The enormous gravitational influence of such clusters distorts the space around them in such a way that they can be used as giant cosmic lenses that magnify distant background galaxies. Studying some of the earliest galaxies in the Universe will tell us more about our cosmic origins. RXC J0232.2-4420 also featured in a study that focused on galaxy clusters that are especially luminous sources of X-rays . The study searched for diffuse light around the brightest galaxies in the clusters, among the most massive galaxies in the Universe. This diffuse light comes from intergalactic stars strung out between the constituent galaxies of the cluster and the aim of the study was to explore various theories for the origins of these stars. One theory is that they may have been stripped from their host galaxies during mergers and interactions.

Image Source: https://www.spacetelescope.org/images/potw1824a/

Curator: ESA/Hubble, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
RXC J0232.2-4420
Subject - Distant Universe
Galaxy > Grouping > Cluster
Cosmology > Phenomenon > Lensing
Esahubble_potw1824a_128
 

Position Details

Position (ICRS)
RA = 2h 32m 18.1s
DEC = -44° 20’ 48.4”
Orientation
North is 113.0° CW
Field of View
2.4 x 1.0 arcminutes
Constellation
Eridanus

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_red Hubble Space Telescope (WFC3) Infrared (H) 1.6 µm
Arrow_left_red Hubble Space Telescope (WFC3) Infrared (J/H) 1.4 µm
Arrow_left_red Hubble Space Telescope (WFC3) Infrared (J) 1.3 µm
Arrow_left_red Hubble Space Telescope (WFC3) Infrared (Z) 1.1 µm
Arrow_left_green Hubble Space Telescope (ACS) Optical (I) 814.0 nm
Arrow_left_cyan Hubble Space Telescope (ACS) Optical (V) 606.0 nm
Arrow_left_blue Hubble Space Telescope (ACS) Optical (B) 435.0 nm
Spectrum_base
Arrow_top_red
Arrow_top_red
Arrow_top_red
Arrow_top_red
Arrow_top_green
Arrow_top_cyan
Arrow_top_blue
Esahubble_potw1824a_1280
×
ID
potw1824a
Subject Category
D.5.5.3   D.6.2.1  
Subject Name
RXC J0232.2-4420
Credits
ESA/Hubble & NASA, RELICS
Release Date
2018-06-11T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw1824a/
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
Instrument
WFC3, WFC3, WFC3, WFC3, ACS, ACS, ACS
Color Assignment
Red, Red, Red, Red, Green, Cyan, Blue
Band
Infrared, Infrared, Infrared, Infrared, Optical, Optical, Optical
Bandpass
H, J/H, J, Z, I, V, B
Central Wavelength
1600, 1400, 1250, 1050, 814, 606, 435
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
38.0752197509, -44.3467692341
Reference Dimension
4771.0, 2000.04092
Reference Pixel
2385.5, 2046.0
Scale
-8.33514441054e-06, 8.33514441054e-06
Rotation
-113.03004907857613
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
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
ESA/Hubble
Publisher ID
esahubble
Resource ID
potw1824a
Metadata Date
2018-03-14T08:55:02+01:00
Metadata Version
1.1
×

 

Detailed color mapping information coming soon...

×

There is no distance meta data in this image.