Hubble Hunts an Unusual Galaxy

Esahubble_potw2247a_1024

esahubble_potw2247a November 21st, 2022

Credit: ESA/Hubble & NASA, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, J. Dalcanton

The galaxy merger Arp-Madore 417-391 steals the spotlight in this image from the NASA/ESA Hubble Space Telescope. The Arp-Madore catalogue is a collection of particularly peculiar galaxies spread throughout the southern sky, and includes a collection of subtly interacting galaxies as well as more spectacular colliding galaxies. Arp-Madore 417-391, which lies around 670 million light-years away in the constellation Eridanus in the southern celestial hemisphere, is one such galactic collision. The two galaxies have been distorted by gravity and twisted into a colossal ring, leaving the cores of the two galaxies nestled side by side. Hubble used its Advanced Camera for Surveys (ACS) to capture this scene — the instrument is optimised to hunt for galaxies and galaxy clusters in the ancient Universe. Hubble’s ACS has been contributing to scientific discovery for 20 years, and throughout its lifetime it has been involved in everything from mapping the distribution of dark matter to studying the evolution of galaxy clusters. This image comes from a selection of Hubble observations designed to create a list of intriguing targets for follow-up observations with the NASA/ESA/CSA James Webb Space Telescope, as well as other ground-based telescopes. Astronomers chose a list of previously unobserved galaxies for Hubble to inspect between other scheduled observations. Over time, this lets astronomers build up a menagerie of interesting galaxies while using Hubble’s limited observing time as fully as possible. [Image description: Two galaxies right of centre form a ring shape. The ring is narrow and blue, and the cores of the two galaxies form a bulge on the ring’s side. A bright, orange star lies above the ring. Two smaller spiral galaxies appear left of centre, as well as a few stars. The background is black and speckled with very small stars and galaxies.] Links Video of Hubble Hunts an Unusual Galaxy

Provider: Hubble Space Telescope | ESA

Image Source: https://esahubble.org/images/potw2247a/

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

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
AM 0417-391
Esahubble_potw2247a_128
 

Position Details

Position (ICRS)
RA = 4h 19m 42.0s
DEC = -39° 11’ 5.1”
Orientation
North is 54.7° CW
Field of View
3.2 x 3.0 arcminutes
Constellation
Eridanus

Color Mapping

  Telescope Spectral Band Wavelength
Blue Blanco-4m (DECam) Optical (G) 474.0 nm
Green Blanco-4m (DECam) Optical (R) 644.0 nm
Red Blanco-4m (DECam) Optical (Z) 919.0 nm
Luminosity Hubble (ACS) Optical (V) 606.0 nm
Spectrum_base
Blue
Green
Red
Luminosity
Esahubble_potw2247a_1280
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ID
potw2247a
Subject Category
Subject Name
AM 0417-391
Credits
ESA/Hubble & NASA, Dark Energy Survey/DOE/FNAL/DECam/CTIO/NOIRLab/NSF/AURA, J. Dalcanton
Release Date
2022-11-21T06:00:00
Lightyears
Redshift
Reference Url
https://esahubble.org/images/potw2247a/
Type
Observation
Image Quality
Distance Notes
Facility
Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope, Víctor M. Blanco 4-meter Telescope, Hubble Space Telescope
Instrument
DECam, DECam, DECam, ACS
Color Assignment
Blue, Green, Red, Luminosity
Band
Optical, Optical, Optical, Optical
Bandpass
G, R, Z, V
Central Wavelength
474, 644, 919, 606
Start Time
Integration Time
Dataset ID
None, None, None, None
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
64.92514870415418, -39.184762951169574
Reference Dimension
3836.0, 3620.0
Reference Pixel
1918.0, 1810.0
Scale
-1.3892586650623764e-05, 1.3892586650623764e-05
Rotation
-54.679999999999964
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
potw2247a
Metadata Date
2022-11-17T17:12:08+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.