Galactic Get-Together

Esahubble_galactic-get-together_1024

esahubble_Galactic-Get-Together November 30th, 2022

Credit: ESA/Webb, NASA & CSA, L. Armus, A. Evans

A merging galaxy pair cavort in this image captured by the NASA/ESA/CSA James Webb Space Telescope. This pair of galaxies, known to astronomers as II ZW 96, is roughly 500 million light-years from Earth and lies in the constellation Delphinus, close to the celestial equator. As well as the wild swirl of the merging galaxies, a menagerie of background galaxies are dotted throughout the image.The two galaxies are in the process of merging and as a result have a chaotic, disturbed shape. The bright cores of the two galaxies are connected by bright tendrils of star-forming regions, and the spiral arms of the lower galaxy have been twisted out of shape by the gravitational perturbation of the galaxy merger. It is these star-forming regions that made II ZW 96 such a tempting target for Webb; the galaxy pair is particularly bright at infrared wavelengths thanks to the presence of the star formation. This observation is from a collection of Webb measurements delving into the details of galactic evolution, in particular in nearby Luminous Infrared Galaxies such as II ZW 96. These galaxies, as the name suggests, are particularly bright at infrared wavelengths, with luminosities more than 100 billion times that of the Sun. An international team of astronomers proposed a study of complex galactic ecosystems — including the merging galaxies in II ZW 96 — to put Webb through its paces soon after the telescope was commissioned. Their chosen targets have already been observed with ground-based telescopes and the NASA/ESA Hubble Space Telescope, which will provide astronomers with insights into Webb’s ability to unravel the details of complex galactic environments. Webb captured this merging galaxy pair with a pair of its cutting-edge instruments; NIRCam — the Near-InfraRed Camera — and MIRI, the Mid-InfraRed Instrument. If you are interested in exploring the differences between Hubble and Webb’s observations of II ZW 96, you can do so here.MIRI was contributed by ESA and NASA, with the instrument designed and built by a consortium of nationally funded European Institutes (The MIRI European Consortium) in partnership with JPL and the University of Arizona. The University of Arizona also provided the NIRCam instrument. [Image description: A galaxy merger lies in the centre of this image. The cores of the galaxies, coloured blue, are below-centre. They are surrounded by red star-forming regions which stretch up through and above the centre. Faint yellow diffraction spikes appear in the middle. The lower galaxy is a mostly regular spiral shape, while the upper galaxy has been distorted heavily. The background is black, and covered with many tiny galaxies throughout the scene.] Links Slider Tool Zoom Into II ZW 96 Pan of II ZW 96 Hubble and Webb Observe II ZW 96 New science paper on II ZW 96 (accepted for publication in ApJ Letters)

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/Galactic-Get-Together/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
ZW II 96
Esahubble_galactic-get-together_128
 

Position Details

Position (ICRS)
RA = 20h 57m 24.2s
DEC = 17° 7’ 41.9”
Orientation
North is 106.4° CW
Field of View
1.8 x 1.3 arcminutes
Constellation
Delphinus

Color Mapping

  Telescope Spectral Band Wavelength
Blue Webb (NIRCam) Infrared (None) 1.5 µm
Cyan Webb (NIRCam) Infrared (None) 2.0 µm
Green Webb (NIRCam) Infrared (None) 3.6 µm
Red Webb (NIRCam) Infrared (None) 4.4 µm
Green Webb (MIRI) Infrared (None) 5.6 µm
Red Webb (MIRI) Infrared (None) 7.7 µm
Red Webb (MIRI) Infrared (None) 15.0 µm
Spectrum_ir1
Blue
Cyan
Green
Red
Green
Red
Red
Esahubble_galactic-get-together_1280
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ID
Galactic-Get-Together
Subject Category
Subject Name
ZW II 96
Credits
ESA/Webb, NASA & CSA, L. Armus, A. Evans
Release Date
2022-11-30T17:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/Galactic-Get-Together/
Type
Observation
Image Quality
Distance Notes
Facility
James Webb Space Telescope, James Webb Space Telescope, James Webb Space Telescope, James Webb Space Telescope, James Webb Space Telescope, James Webb Space Telescope, James Webb Space Telescope
Instrument
NIRCam, NIRCam, NIRCam, NIRCam, MIRI, MIRI, MIRI
Color Assignment
Blue, Cyan, Green, Red, Green, Red, Red
Band
Infrared, Infrared, Infrared, Infrared, Infrared, Infrared, Infrared
Bandpass
None, None, None, None, None, None, None
Central Wavelength
1500, 2000, 3560, 4400, 5600, 7700, 15000
Start Time
Integration Time
Dataset ID
None, None, None, None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
314.3509718275793, 17.128312694051502
Reference Dimension
3571.0, 2551.0
Reference Pixel
1785.5, 1275.5
Scale
-8.540739310468967e-06, 8.540739310468967e-06
Rotation
-106.35999999999994
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
Galactic-Get-Together
Metadata Date
2022-11-16T17:56:21+01:00
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.

 

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