Cosmic interactions

Eso_eso0802a_500

eso_eso0802a January 21st, 2008

Credit: ESO

Colour-composite image of the triplet of galaxies, catalogued as NGC 7173 (top), 7174 (bottom right) and 7176 (bottom left), and located 106 million light-years away towards the constellation of Piscis Austrinus (the 'Southern Fish'). Thistriplet of galaxies makes up part of the Hickson Compact Group HCG 90. NGC 7173 and 7176 are elliptical galaxies, while NGC 7174 is a spiral galaxy with quite disturbed dust lanes and a long, twisted tail. This seems to indicate that the two lower galaxies - whose combined shape bears some resemblance to that of a sleeping baby - are currently interacting. Astronomers have suggested that the three galaxies will finally merge. The size of the image is about 5.3 arcminutes. The image is based on data obtained with the VLT FORS1instrument on ESO's Very Large Telescope through three different filters, B, V, and R.The data were extracted from the ESO Science Archive and fully processed by Henri Boffin (ESO).

Image Source: https://www.eso.org/public/images/eso0802a/

Curator: European Southern Observatory, Garching bei München, Germany

Image Use Policy: Creative Commons Attribution 4.0 International License

Image Details

Image Type
Observation
Object Name
NGC 7173 NGC 7174 NGC 7176
Subject - Distant Universe
Galaxy » Type » Interacting
Eso_eso0802a_128
 

Position Details

Position (ICRS)
RA = 22h 2m 6.8s
DEC = -31° 59’ 36.7”
Orientation
North is up
Field of View
6.4 x 5.5 arcminutes
Constellation
Piscis Austrinus

Color Mapping

  Telescope Spectral Band Wavelength
Arrow_left_blue Very Large Telescope (FORS1) Optical (B) -
Arrow_left_green Very Large Telescope (FORS1) Optical (V) -
Arrow_left_red Very Large Telescope (FORS1) Optical (R) -
Eso_eso0802a_1280
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ID
eso0802a
Subject Category
D.5.1.7  
Subject Name
NGC 7173, NGC 7174, NGC 7176
Credits
ESO
Lightyears
Redshift
Reference Url
https://www.eso.org/public/images/eso0802a/
Type
Observation
Image Quality
Distance Notes
Approximate distance in light years from NED
Facility
Very Large Telescope, Very Large Telescope, Very Large Telescope
Instrument
FORS1, FORS1, FORS1
Color Assignment
Blue, Green, Red
Band
Optical, Optical, Optical
Bandpass
B, V, R
Central Wavelength
Start Time
Integration Time
Dataset ID
Notes
Coordinate Frame
ICRS
Equinox
J2000
Reference Value
330.528528, -31.99353
Reference Dimension
1930.0, 1659.0
Reference Pixel
814.433082141, 287.711561568
Scale
-5.563312e-05, 5.563312e-05
Rotation
0.02949509529
Coordinate System Projection:
TAN
Quality
Full
FITS Header
Notes
Creator (Curator)
European Southern Observatory
URL
http://www.eso.org/
Name
Email
Telephone
Address
Karl-Schwarzschild-Strasse 2
City
Garching bei München
State/Province
Postal Code
D-85748
Country
Germany
Rights
Creative Commons Attribution 4.0 International License
Publisher
European Southern Observatory
Publisher ID
eso
Resource ID
eso0802a
Metadata Date
2009-01-07T16:29:10+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.