VV191 Galaxy Pair

Stsci_2022-503b_1024

stsci_2022-503b October 5th, 2022

Credit: NASA, ESA, CSA, W. Keel, R. Windhorst, and STScI

Researchers identified a previously unknown lensed galaxy for the first time in new near-infrared data from NASA’s James Webb Space Telescope.

Examine the white elliptical galaxy at left. A faint red arc appears in the inset at 10 o’clock. This is a very distant galaxy whose appearance is warped in Webb’s image. Its light is bent by the gravity of the elliptical foreground galaxy. Plus, its appearance is duplicated. The stretched red arc reappears – as a dot – at 4 o’clock.

These images of the lensed galaxy are so faint and so red that they went unrecognized in Hubble data, but are unmistakable in Webb’s near-infrared image. Simulations of gravitationally lensed galaxies like this help researchers reconstruct how much mass is in individual stars, along with how much dark matter is in the core of this galaxy.

This image includes ultraviolet and visible data from NASA’s Hubble Space Telescope.

Provider: Space Telescope Science Institute

Image Source: https://webbtelescope.org/contents/early-highlights/webb-hubble-team-up-to-trace-interstellar-dust-within-a-galactic-pair

Curator: STScI, Baltimore, MD, USA

Image Use Policy: https://www.stsci.edu/copyright

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Image Details

Image Type
Observation
Object Name
VV191 SDSS-587739810484191285
Subject - Local Universe
Galaxy > Type > Spiral
Galaxy > Type > Elliptical
Galaxy > Grouping > Pair

Position Details

Position (ICRS)
RA = 13h 48m 22.2s
DEC = 25° 39’ 32.0”
Constellation
Bootes

Color Mapping

  Telescope Spectral Band Wavelength
Blue Hubble (WFC3/UVIS) Ultraviolet (U) 336.0 nm
Blue Hubble (WFC3/UVIS) Optical (V) 606.0 nm
Green Webb (NIRCAM) Infrared 900.0 nm
Yellow Webb (NIRCAM) Infrared 1.5 µm
Red Webb (NIRCAM) Infrared 3.6 µm
Spectrum_base
Blue
Blue
Green
Yellow
Red
Stsci_2022-503b_1280
×
ID
2022-503b
Subject Category
C.5.1.1   C.5.1.4   C.5.5.1  
Subject Name
VV191, SDSS-587739810484191285
Credits
NASA, ESA, CSA, W. Keel, R. Windhorst, and STScI
Type
Observation
Image Quality
Good
Distance Notes
Distance in lightyears
Facility
Hubble, Hubble, Webb, Webb, Webb
Instrument
WFC3/UVIS, WFC3/UVIS, NIRCAM, NIRCAM, NIRCAM
Color Assignment
Blue, Blue, Green, Yellow, Red
Band
Ultraviolet, Optical, Infrared, Infrared, Infrared
Bandpass
U, V
Central Wavelength
336, 606, 900, 1500, 3560
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
2000.0
Reference Value
207.09257760060, 25.65887719383
Reference Dimension
Reference Pixel
Scale
Rotation
Coordinate System Projection:
TAN
Quality
Position
FITS Header
Notes
Creator (Curator)
STScI
URL
https://www.stsci.edu/
Name
Space Telescope Science Institute Office of Public Outreach
Email
outreach@stsci.edu
Telephone
410-338-4444
Address
3700 San Martin Drive
City
Baltimore
State/Province
MD
Postal Code
21218
Country
USA
Rights
https://www.stsci.edu/copyright
Publisher
STScI
Publisher ID
stsci
Resource ID
STSCI-J-p22503b-f-2050x1832.tif
Metadata Date
2022-10-06T16:05:37-04:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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There is no distance meta data in this image.