A (Galactic) Arm’s Length Away

The two galaxies in this image — NGC 672 (top right) and IC 1727 (bottom left) — appear to be so close that they are almost elbowing each other, like playful children. In fact, the galaxies shown in this beautifully detailed image taken at the Kitt Peak National Observatory, a program of NSF’s NOIRLab, are classified as a galactic pair, and the gravity of each galaxy influences the other. The pair are located around 20 million light-years away from Earth and the space between them spans over 80,000 light-years, a seemingly enormous gap. However, from the perspective of the galaxies’ themselves, that separation is not so significant, as it is roughly equivalent to the size of the galaxies themselves.

Credit:

KPNO/NOIRLab/NSF/AURA

Acknowledgements:
PI: M T. Patterson (New Mexico State University)
Image processing: Travis Rector (University of Alaska Anchorage), Mahdi Zamani & Davide de Martin

About the Image

Id:iotw2019a
Type:Observation
Release date:May 6, 2020, 3 a.m.
Size:3619 x 3414 px

About the Object

Name:IC 1727, NGC 6720
Constellation:Triangulum
Category:Galaxies

Image Formats

Large JPEG
2.8 MB
Screensize JPEG
223.5 KB

Zoomable


Wallpapers

1024x768
210.3 KB
1280x1024
321.3 KB
1600x1200
459.8 KB
1920x1200
558.1 KB
2048x1536
744.7 KB

Coordinates

Position (RA):1 47 42.21
Position (Dec):27° 22' 18.91"
Field of view:15.77 x 14.88 arcminutes
Orientation:North is 90.1° right of vertical


Colors & filters

BandWavelengthTelescope
Optical
U
355 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
B
438 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
R
651 nmNicholas U. Mayall 4-meter Telescope
Mosaic I
Optical
H-alpha
657 nmNicholas U. Mayall 4-meter Telescope
Mosaic I