Cosmic Tango of UGC 813

Nrao_nrao_gallery021_1024

nrao_NRAO_Gallery021  

Credit: NRAO/AUI/NSF, Image copyright J. M. Uson (NRAO), observers J. J. Condon, G. Helou, T. H. Jarrett

The \"Taffy\" galaxies are the results of a collision between two galaxies, UGC 813 (right) and UGC 816 (left). They were normal disk galaxies before they collided face-on at a speed of one million miles per hour about 50 million years ago. The disks of stars and dense clouds of molecular gas passed through each other relatively unharmed and are now separating. Diffuse HI gas clouds were stopped between the galaxies or thrown out in long tails, shown in blue. Disk magnetic fields are anchored by dense molecular clouds and are being stretched like bands of taffy between the galaxies as they separate. This bridge produces the radio continuum emission depicted in red.

Provider: National Radio Astronomy Observatory

Image Source: https://public.nrao.edu/gallery/the-collision-of-ugc-813-and-ugc-816/

Curator: NRAO/AUI/NSF, Charlottesville, Virginia, USA

Image Use Policy: Creative Commons Attribution 3.0 Unported license (http://creativecommons.org/licenses/by/3.0/)

Image Details

Image Type
Observation
Object Name
Taffy Galaxies UGC 813 UGC 816
Subject - Local Universe
Galaxy > Type > Interacting

Distance

Universescale3
244,600,000 light years
Nrao_nrao_gallery021_128
 

Position Details

Position (ICRS)
RA = 1h 16m 16.5s
DEC = 46° 44’ 24.8”
Orientation
North is 1.9° CCW
Field of View
10.0 x 10.0 arcminutes
Constellation
Andromeda

Color Mapping

  Telescope Spectral Band Wavelength
Blue VLA Radio (HI) 210.0 mm
Red VLA Radio (L) 210.0 mm
Grayscale Skyview Optical 470.0 nm
Spectrum_ir2
Blue
Red
Grayscale
Nrao_nrao_gallery021_1280
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ID
NRAO_Gallery021
Subject Category
C.5.1.7  
Subject Name
Taffy Galaxies, UGC 813, UGC 816
Credits
NRAO/AUI/NSF, Image copyright J. M. Uson (NRAO), observers J. J. Condon, G. Helou, T. H. Jarrett
Release Date
Lightyears
2.446E+08
Redshift
2.446E+08
Reference Url
https://public.nrao.edu/gallery/the-collision-of-ugc-813-and-ugc-816/
Type
Observation
Image Quality
Good
Distance Notes
Facility
VLA, VLA, Skyview
Instrument
Color Assignment
Blue, Red, Grayscale
Band
Radio, Radio, Optical
Bandpass
HI, L, -
Central Wavelength
2.1E+08, 2.1E+08, 470
Start Time
2001-07-27, 2001-07-27, 2017-03-29T12:04:41-04:00
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
2000.0
Reference Value
19.06856700000, 46.74022800000
Reference Dimension
2099, 2099
Reference Pixel
1046.45495790812, 1047.07450118368
Scale
-0.00007959932, 0.00007959932
Rotation
1.90968313555
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
World Coordinate System resolved using PinpointWCS 0.9.2 revision 218+ by the Chandra X-ray Center
Creator (Curator)
NRAO/AUI/NSF
URL
https://public.nrao.edu
Name
NRAO/AUI/NSF
Email
outreach@nrao.edu
Telephone
Address
520 Edgemont Road
City
Charlottesville
State/Province
Virginia
Publisher
NRAO/AUI/NSF
Publisher ID
nrao
Resource ID
Metadata Date
2021-08-06T09:30:26-04:00
Metadata Version
1.2
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Detailed color mapping information coming soon...

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Universescalefull
244,600,000 light years