Helping Hubble

Esahubble_potw1844a_1024

esahubble_potw1844a October 29th, 2018

Credit: ESA/Hubble & NASAAcknowledgement: Judy Schmidt (geckzilla.com)

The NASA/ESA Hubble Space Telescope doesnt usually get much assistance from its celestial subjects but to take this image, the telescope opted for teamwork and made good use of a fascinating cosmic phenomenon known as gravitational lensing. This effect works when the gravitational influence of a massive object, such as the galaxy cluster in the centre of this image, is so colossal that it warps the surrounding space, causing nearby light to travel along distorted paths. The massive object is effectively turned into a giant magnifying glass, bending and amplifying the light travelling from more distant galaxies lying behind it. In this particular case, astronomers used the foreground galaxy cluster (named SDSS J0915+3826) to study star formation in galaxies lying so far away that their light has taken up to 11.5 billion years to reach our eyes. These galaxies formed at a very early stage in the lifetime of the Universe, giving astronomers a rare glimpse into the beginning of the cosmos. Despite their distance, the lensing effects of SDSS J0915+3826 allowed astronomers to work out the sizes, luminosities, star formation rates, and stellar populations of individual star-forming clumps within these galaxies quite an achievement!

Image Source: https://www.spacetelescope.org/images/potw1844a/

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
SDSS J0915+3826
Subject - Distant Universe
Galaxy > Grouping > Cluster
Cosmology > Phenomenon > Lensing
Esahubble_potw1844a_128
 

Position Details

Position (ICRS)
RA = 9h 15m 40.0s
DEC = 38° 26’ 38.1”
Orientation
North is 34.9° CCW
Field of View
2.6 x 2.1 arcminutes
Constellation
Lynx

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_red Hubble Space Telescope (WFC3) Infrared (H) 1.6 µm
Arrow_left_blue Hubble Space Telescope (WFC3) Optical (C) 390.0 nm
Arrow_left_green Hubble Space Telescope (WFC3) Infrared (J) 1.3 µm
Arrow_left_cyan Hubble Space Telescope (WFC3) Optical (I) 814.0 nm
Spectrum_base
Arrow_top_red
Arrow_top_blue
Arrow_top_green
Arrow_top_cyan
Esahubble_potw1844a_1280
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ID
potw1844a
Subject Category
D.5.5.3   D.6.2.1  
Subject Name
SDSS J0915+3826
Credits
ESA/Hubble & NASAAcknowledgement: Judy Schmidt (geckzilla.com)
Release Date
2018-10-29T06:00:00
Lightyears
Redshift
Reference Url
https://www.spacetelescope.org/images/potw1844a/
Type
Observation
Image Quality
Distance Notes
Facility
Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope, Hubble Space Telescope
Instrument
WFC3, WFC3, WFC3, WFC3
Color Assignment
Red, Blue, Green, Cyan
Band
Infrared, Optical, Infrared, Optical
Bandpass
H, C, J, I
Central Wavelength
1600, 390, 1250, 814
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
138.91675695, 38.4439114414
Reference Dimension
3982.0, 3144.0
Reference Pixel
1991.0, 1572.0
Scale
-1.09918644326e-05, 1.09918644326e-05
Rotation
34.919999999999987
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
potw1844a
Metadata Date
2018-04-09T09:44:41+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.